Linux 5.4.189

index c4e78df428e8..e09ae5f48aec 100644
@@ -9,6 +9,6 @@
 #ifndef __IRQS_H
 #define __IRQS_H
 
-#define NR_IRQS			32
+#define NR_IRQS			33
 
 #endif

index 2d48bf1398c1..d1e8824cbd82 100644
@@ -32,14 +32,14 @@ static void intstr_write(u32 val)
 static void
 iop32x_irq_mask(struct irq_data *d)
 {
-	iop32x_mask &= ~(1 << d->irq);
+	iop32x_mask &= ~(1 << (d->irq - 1));
 	intctl_write(iop32x_mask);
 }
 
 static void
 iop32x_irq_unmask(struct irq_data *d)
 {
-	iop32x_mask |= 1 << d->irq;
+	iop32x_mask |= 1 << (d->irq - 1);
 	intctl_write(iop32x_mask);
 }
 

@@ -65,7 +65,7 @@ void __init iop32x_init_irq(void)
 	    machine_is_em7210())
 		*IOP3XX_PCIIRSR = 0x0f;
 
-	for (i = 0; i < NR_IRQS; i++) {
+	for (i = 1; i < NR_IRQS; i++) {
 		irq_set_chip_and_handler(i, &ext_chip, handle_level_irq);
 		irq_clear_status_flags(i, IRQ_NOREQUEST | IRQ_NOPROBE);
 	}

68 lines not on this page · raw message

index 6794e2db1ad5..ecc46c31004f 100644
@@ -72,6 +72,8 @@ static int sram_probe(struct platform_device *pdev)
 	if (!info)
 		return -ENOMEM;
 
+	platform_set_drvdata(pdev, info);
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (res == NULL) {
 		dev_err(&pdev->dev, "no memory resource defined\n");

@@ -107,8 +109,6 @@ static int sram_probe(struct platform_device *pdev)
 	list_add(&info->node, &sram_bank_list);
 	mutex_unlock(&sram_lock);
 
-	platform_set_drvdata(pdev, info);
-
 	dev_info(&pdev->dev, "initialized\n");
 	return 0;
 

@@ -127,17 +127,19 @@ static int sram_remove(struct platform_device *pdev)
 	struct sram_bank_info *info;
 
 	info = platform_get_drvdata(pdev);
-	if (info == NULL)
-		return -ENODEV;
 
-	mutex_lock(&sram_lock);
-	list_del(&info->node);
-	mutex_unlock(&sram_lock);
+	if (info->sram_size) {
+		mutex_lock(&sram_lock);
+		list_del(&info->node);
+		mutex_unlock(&sram_lock);
+
+		gen_pool_destroy(info->gpool);
+		iounmap(info->sram_virt);
+		kfree(info->pool_name);
+	}
 
-	gen_pool_destroy(info->gpool);
-	iounmap(info->sram_virt);
-	kfree(info->pool_name);
 	kfree(info);
+
 	return 0;
 }
 

index 885e8f12e4b9..eedc9f8ed210 100644
@@ -237,11 +237,11 @@ static int __init jive_mtdset(char *options)
 	unsigned long set;
 
 	if (options == NULL || options[0] == '\0')
-		return 0;
+		return 1;
 
 	if (kstrtoul(options, 10, &set)) {
 		printk(KERN_ERR "failed to parse mtdset=%s\n", options);
-		return 0;
+		return 1;
 	}
 
 	switch (set) {

@@ -256,7 +256,7 @@ static int __init jive_mtdset(char *options)
 		       "using default.", set);
 	}
 
-	return 0;
+	return 1;
 }
 
 /* parse the mtdset= option given to the kernel command line */

index 78d110667c0c..ffe0aad96b17 100644
@@ -479,7 +479,8 @@ static inline void *kvm_get_hyp_vector(void)
 	int slot = -1;
 
 	if ((cpus_have_const_cap(ARM64_HARDEN_BRANCH_PREDICTOR) ||
-	     cpus_have_const_cap(ARM64_SPECTRE_BHB)) && data->template_start) {
+	     cpus_have_const_cap(ARM64_SPECTRE_BHB)) &&
+	    data && data->template_start) {
 		vect = kern_hyp_va(kvm_ksym_ref(__bp_harden_hyp_vecs_start));
 		slot = data->hyp_vectors_slot;
 	}

index e4d6af2fdec7..5397f0d9e5bb 100644
@@ -53,6 +53,9 @@ static int psci_acpi_cpu_init_idle(unsigned int cpu)
 	struct acpi_lpi_state *lpi;
 	struct acpi_processor *pr = per_cpu(processors, cpu);
 
+	if (unlikely(!pr || !pr->flags.has_lpi))
+		return -EINVAL;
+
 	/*
 	 * If the PSCI cpu_suspend function hook has not been initialized
 	 * idle states must not be enabled, so bail out

@@ -60,9 +63,6 @@ static int psci_acpi_cpu_init_idle(unsigned int cpu)
 	if (!psci_ops.cpu_suspend)
 		return -EOPNOTSUPP;
 
-	if (unlikely(!pr || !pr->flags.has_lpi))
-		return -EINVAL;
-
 	count = pr->power.count - 1;
 	if (count <= 0)
 		return -ENODEV;

index 53bcf5386907..a02c294a4753 100644
@@ -207,8 +207,8 @@ static int __kprobes aarch64_insn_patch_text_cb(void *arg)
 	int i, ret = 0;
 	struct aarch64_insn_patch *pp = arg;
 
-	/* The first CPU becomes master */
-	if (atomic_inc_return(&pp->cpu_count) == 1) {
+	/* The last CPU becomes master */
+	if (atomic_inc_return(&pp->cpu_count) == num_online_cpus()) {
 		for (i = 0; ret == 0 && i < pp->insn_cnt; i++)
 			ret = aarch64_insn_patch_text_nosync(pp->text_addrs[i],
 							     pp->new_insns[i]);

index a343677837c7..17a8d1484f9b 100644
@@ -909,15 +909,18 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
 		goto out_off;
 	}
 
-	/* 1. Initial fake pass to compute ctx->idx. */
-
-	/* Fake pass to fill in ctx->offset. */
-	if (build_body(&ctx, extra_pass)) {
+	/*
+	 * 1. Initial fake pass to compute ctx->idx and ctx->offset.
+	 *
+	 * BPF line info needs ctx->offset[i] to be the offset of
+	 * instruction[i] in jited image, so build prologue first.
+	 */
+	if (build_prologue(&ctx, was_classic)) {
 		prog = orig_prog;
 		goto out_off;
 	}
 
-	if (build_prologue(&ctx, was_classic)) {
+	if (build_body(&ctx, extra_pass)) {
 		prog = orig_prog;
 		goto out_off;
 	}

@@ -983,6 +986,11 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
 	prog->jited_len = image_size;
 
 	if (!prog->is_func || extra_pass) {
+		int i;
+
+		/* offset[prog->len] is the size of program */
+		for (i = 0; i <= prog->len; i++)
+			ctx.offset[i] *= AARCH64_INSN_SIZE;
 		bpf_prog_fill_jited_linfo(prog, ctx.offset + 1);
 out_off:
 		kfree(ctx.offset);

index a1f206b90753..c8cd66c8d257 100644
@@ -171,27 +171,27 @@ extern long __user_bad(void);
 
 #define __get_user(x, ptr)						\
 ({									\
-	unsigned long __gu_val = 0;					\
 	long __gu_err;							\
 	switch (sizeof(*(ptr))) {					\
 	case 1:								\
-		__get_user_asm("lbu", (ptr), __gu_val, __gu_err);	\
+		__get_user_asm("lbu", (ptr), x, __gu_err);		\
 		break;							\
 	case 2:								\
-		__get_user_asm("lhu", (ptr), __gu_val, __gu_err);	\
+		__get_user_asm("lhu", (ptr), x, __gu_err);		\
 		break;							\
 	case 4:								\
-		__get_user_asm("lw", (ptr), __gu_val, __gu_err);	\
+		__get_user_asm("lw", (ptr), x, __gu_err);		\
 		break;							\
-	case 8:								\
-		__gu_err = __copy_from_user(&__gu_val, ptr, 8);		\
-		if (__gu_err)						\
-			__gu_err = -EFAULT;				\
+	case 8: {							\
+		__u64 __x = 0;						\
+		__gu_err = raw_copy_from_user(&__x, ptr, 8) ?		\
+							-EFAULT : 0;	\
+		(x) = (typeof(x))(typeof((x) - (x)))__x;		\
 		break;							\
+	}								\
 	default:							\
 		/* __gu_val = 0; __gu_err = -EINVAL;*/ __gu_err = __user_bad();\
 	}								\
-	x = (__force __typeof__(*(ptr))) __gu_val;			\
 	__gu_err;							\
 })
 

index 1fc8dffa8d1d..649b50ae5b1e 100644
@@ -766,7 +766,8 @@ void __init arch_init_irq(void)
 		dec_interrupt[DEC_IRQ_HALT] = -1;
 
 	/* Register board interrupts: FPU and cascade. */
-	if (dec_interrupt[DEC_IRQ_FPU] >= 0 && cpu_has_fpu) {
+	if (IS_ENABLED(CONFIG_MIPS_FP_SUPPORT) &&
+	    dec_interrupt[DEC_IRQ_FPU] >= 0 && cpu_has_fpu) {
 		struct irq_desc *desc_fpu;
 		int irq_fpu;
 

index 62c7dfb90e06..1e1247add1cf 100644
@@ -43,16 +43,11 @@
  */
 #define REX_PROM_MAGIC		0x30464354
 
-#ifdef CONFIG_64BIT
-
-#define prom_is_rex(magic)	1	/* KN04 and KN05 are REX PROMs.  */
-
-#else /* !CONFIG_64BIT */
-
-#define prom_is_rex(magic)	((magic) == REX_PROM_MAGIC)
-
-#endif /* !CONFIG_64BIT */
-
+/* KN04 and KN05 are REX PROMs, so only do the check for R3k systems.  */
+static inline bool prom_is_rex(u32 magic)
+{
+	return !IS_ENABLED(CONFIG_CPU_R3000) || magic == REX_PROM_MAGIC;
+}
 
 /*
  * 3MIN/MAXINE PROM entry points for DS5000/1xx's, DS5000/xx's and

index bb36a400203d..8c56b862fd9c 100644
@@ -16,7 +16,7 @@ static inline void setup_8250_early_printk_port(unsigned long base,
 	unsigned int reg_shift, unsigned int timeout) {}
 #endif
 
-extern void set_handler(unsigned long offset, void *addr, unsigned long len);
+void set_handler(unsigned long offset, const void *addr, unsigned long len);
 extern void set_uncached_handler(unsigned long offset, void *addr, unsigned long len);
 
 typedef void (*vi_handler_t)(void);

index 8282d0feb0b2..749089c25d5e 100644
@@ -2020,19 +2020,19 @@ static void *set_vi_srs_handler(int n, vi_handler_t addr, int srs)
 		 * If no shadow set is selected then use the default handler
 		 * that does normal register saving and standard interrupt exit
 		 */
-		extern char except_vec_vi, except_vec_vi_lui;
-		extern char except_vec_vi_ori, except_vec_vi_end;
-		extern char rollback_except_vec_vi;
-		char *vec_start = using_rollback_handler() ?
-			&rollback_except_vec_vi : &except_vec_vi;
+		extern const u8 except_vec_vi[], except_vec_vi_lui[];
+		extern const u8 except_vec_vi_ori[], except_vec_vi_end[];
+		extern const u8 rollback_except_vec_vi[];
+		const u8 *vec_start = using_rollback_handler() ?
+				      rollback_except_vec_vi : except_vec_vi;
 #if defined(CONFIG_CPU_MICROMIPS) || defined(CONFIG_CPU_BIG_ENDIAN)
-		const int lui_offset = &except_vec_vi_lui - vec_start + 2;
-		const int ori_offset = &except_vec_vi_ori - vec_start + 2;
+		const int lui_offset = except_vec_vi_lui - vec_start + 2;
+		const int ori_offset = except_vec_vi_ori - vec_start + 2;
 #else
-		const int lui_offset = &except_vec_vi_lui - vec_start;
-		const int ori_offset = &except_vec_vi_ori - vec_start;
+		const int lui_offset = except_vec_vi_lui - vec_start;
+		const int ori_offset = except_vec_vi_ori - vec_start;
 #endif
-		const int handler_len = &except_vec_vi_end - vec_start;
+		const int handler_len = except_vec_vi_end - vec_start;
 
 		if (handler_len > VECTORSPACING) {
 			/*

@@ -2240,7 +2240,7 @@ void per_cpu_trap_init(bool is_boot_cpu)
 }
 
 /* Install CPU exception handler */
-void set_handler(unsigned long offset, void *addr, unsigned long size)
+void set_handler(unsigned long offset, const void *addr, unsigned long size)
 {
 #ifdef CONFIG_CPU_MICROMIPS
 	memcpy((void *)(ebase + offset), ((unsigned char *)addr - 1), size);

index 0ddeb31afa93..45ca2b84f096 100644
@@ -61,6 +61,7 @@ static int __init ill_acc_of_setup(void)
 	pdev = of_find_device_by_node(np);
 	if (!pdev) {
 		pr_err("%pOFn: failed to lookup pdev\n", np);
+		of_node_put(np);
 		return -EINVAL;
 	}
 

index c9ecf17f8660..74808619fefe 100644
@@ -310,11 +310,9 @@ static int __init plat_setup_devices(void)
 static int __init setup_kmac(char *s)
 {
 	printk(KERN_INFO "korina mac = %s\n", s);
-	if (!mac_pton(s, korina_dev0_data.mac)) {
+	if (!mac_pton(s, korina_dev0_data.mac))
 		printk(KERN_ERR "Invalid mac\n");
-		return -EINVAL;
-	}
-	return 0;
+	return 1;
 }
 
 __setup("kmac=", setup_kmac);

index e83f831a76f9..6be5e913c42e 100644
@@ -89,6 +89,7 @@ extern __must_check long strnlen_user(const char __user *s, long n);
 /* Optimized macros */
 #define __get_user_asm(val, insn, addr, err)				\
 {									\
+	unsigned long __gu_val;						\
 	__asm__ __volatile__(						\
 	"       movi    %0, %3\n"					\
 	"1:   " insn " %1, 0(%2)\n"					\

@@ -97,14 +98,20 @@ extern __must_check long strnlen_user(const char __user *s, long n);
 	"       .section __ex_table,\"a\"\n"				\
 	"       .word 1b, 2b\n"						\
 	"       .previous"						\
-	: "=&r" (err), "=r" (val)					\
+	: "=&r" (err), "=r" (__gu_val)					\
 	: "r" (addr), "i" (-EFAULT));					\
+	val = (__force __typeof__(*(addr)))__gu_val;			\
 }
 
-#define __get_user_unknown(val, size, ptr, err) do {			\
+extern void __get_user_unknown(void);
+
+#define __get_user_8(val, ptr, err) do {				\
+	u64 __val = 0;							\
 	err = 0;							\
-	if (__copy_from_user(&(val), ptr, size)) {			\
+	if (raw_copy_from_user(&(__val), ptr, sizeof(val))) {		\
 		err = -EFAULT;						\
+	} else {							\
+		val = (typeof(val))(typeof((val) - (val)))__val;	\
 	}								\
 	} while (0)
 

@@ -120,8 +127,11 @@ do {									\
 	case 4:								\
 		__get_user_asm(val, "ldw", ptr, err);			\
 		break;							\
+	case 8:								\
+		__get_user_8(val, ptr, err);				\
+		break;							\
 	default:							\
-		__get_user_unknown(val, size, ptr, err);		\
+		__get_user_unknown();					\
 		break;							\
 	}								\
 } while (0)

@@ -130,9 +140,7 @@ do {									\
 	({								\
 	long __gu_err = -EFAULT;					\
 	const __typeof__(*(ptr)) __user *__gu_ptr = (ptr);		\
-	unsigned long __gu_val = 0;					\
-	__get_user_common(__gu_val, sizeof(*(ptr)), __gu_ptr, __gu_err);\
-	(x) = (__force __typeof__(x))__gu_val;				\
+	__get_user_common(x, sizeof(*(ptr)), __gu_ptr, __gu_err);	\
 	__gu_err;							\
 	})
 

@@ -140,11 +148,9 @@ do {									\
 ({									\
 	long __gu_err = -EFAULT;					\
 	const __typeof__(*(ptr)) __user *__gu_ptr = (ptr);		\
-	unsigned long __gu_val = 0;					\
 	if (access_ok( __gu_ptr, sizeof(*__gu_ptr)))	\
-		__get_user_common(__gu_val, sizeof(*__gu_ptr),		\
+		__get_user_common(x, sizeof(*__gu_ptr),			\
 			__gu_ptr, __gu_err);				\
-	(x) = (__force __typeof__(x))__gu_val;				\
 	__gu_err;							\
 })
 

index 80a0ab372802..e59574f65e64 100644
@@ -40,10 +40,7 @@ static void __kprobes *patch_map(void *addr, int fixmap, unsigned long *flags,
 
 	*need_unmap = 1;
 	set_fixmap(fixmap, page_to_phys(page));
-	if (flags)
-		raw_spin_lock_irqsave(&patch_lock, *flags);
-	else
-		__acquire(&patch_lock);
+	raw_spin_lock_irqsave(&patch_lock, *flags);
 
 	return (void *) (__fix_to_virt(fixmap) + (uintaddr & ~PAGE_MASK));
 }

@@ -52,10 +49,7 @@ static void __kprobes patch_unmap(int fixmap, unsigned long *flags)
 {
 	clear_fixmap(fixmap);
 
-	if (flags)
-		raw_spin_unlock_irqrestore(&patch_lock, *flags);
-	else
-		__release(&patch_lock);
+	raw_spin_unlock_irqrestore(&patch_lock, *flags);
 }
 
 void __kprobes __patch_text_multiple(void *addr, u32 *insn, unsigned int len)

@@ -67,8 +61,9 @@ void __kprobes __patch_text_multiple(void *addr, u32 *insn, unsigned int len)
 	int mapped;
 
 	/* Make sure we don't have any aliases in cache */
-	flush_kernel_vmap_range(addr, len);
-	flush_icache_range(start, end);
+	flush_kernel_dcache_range_asm(start, end);
+	flush_kernel_icache_range_asm(start, end);
+	flush_tlb_kernel_range(start, end);
 
 	p = fixmap = patch_map(addr, FIX_TEXT_POKE0, &flags, &mapped);
 

@@ -81,8 +76,10 @@ void __kprobes __patch_text_multiple(void *addr, u32 *insn, unsigned int len)
 			 * We're crossing a page boundary, so
 			 * need to remap
 			 */
-			flush_kernel_vmap_range((void *)fixmap,
-						(p-fixmap) * sizeof(*p));
+			flush_kernel_dcache_range_asm((unsigned long)fixmap,
+						      (unsigned long)p);
+			flush_tlb_kernel_range((unsigned long)fixmap,
+					       (unsigned long)p);
 			if (mapped)
 				patch_unmap(FIX_TEXT_POKE0, &flags);
 			p = fixmap = patch_map(addr, FIX_TEXT_POKE0, &flags,

@@ -90,10 +87,10 @@ void __kprobes __patch_text_multiple(void *addr, u32 *insn, unsigned int len)
 		}
 	}
 
-	flush_kernel_vmap_range((void *)fixmap, (p-fixmap) * sizeof(*p));
+	flush_kernel_dcache_range_asm((unsigned long)fixmap, (unsigned long)p);
+	flush_tlb_kernel_range((unsigned long)fixmap, (unsigned long)p);
 	if (mapped)
 		patch_unmap(FIX_TEXT_POKE0, &flags);
-	flush_icache_range(start, end);
 }
 
 void __kprobes __patch_text(void *addr, u32 insn)

index a63ec938636d..daba2d2a02a0 100644
@@ -345,25 +345,37 @@ static inline void __raw_writeq_be(unsigned long v, volatile void __iomem *addr)
  */
 static inline void __raw_rm_writeb(u8 val, volatile void __iomem *paddr)
 {
-	__asm__ __volatile__("stbcix %0,0,%1"
+	__asm__ __volatile__(".machine push;   \
+			      .machine power6; \
+			      stbcix %0,0,%1;  \
+			      .machine pop;"
 		: : "r" (val), "r" (paddr) : "memory");
 }
 
 static inline void __raw_rm_writew(u16 val, volatile void __iomem *paddr)
 {
-	__asm__ __volatile__("sthcix %0,0,%1"
+	__asm__ __volatile__(".machine push;   \
+			      .machine power6; \
+			      sthcix %0,0,%1;  \
+			      .machine pop;"
 		: : "r" (val), "r" (paddr) : "memory");
 }
 
 static inline void __raw_rm_writel(u32 val, volatile void __iomem *paddr)
 {
-	__asm__ __volatile__("stwcix %0,0,%1"
+	__asm__ __volatile__(".machine push;   \
+			      .machine power6; \
+			      stwcix %0,0,%1;  \
+			      .machine pop;"
 		: : "r" (val), "r" (paddr) : "memory");
 }
 
 static inline void __raw_rm_writeq(u64 val, volatile void __iomem *paddr)
 {
-	__asm__ __volatile__("stdcix %0,0,%1"
+	__asm__ __volatile__(".machine push;   \
+			      .machine power6; \
+			      stdcix %0,0,%1;  \
+			      .machine pop;"
 		: : "r" (val), "r" (paddr) : "memory");
 }
 

@@ -375,7 +387,10 @@ static inline void __raw_rm_writeq_be(u64 val, volatile void __iomem *paddr)
 static inline u8 __raw_rm_readb(volatile void __iomem *paddr)
 {
 	u8 ret;
-	__asm__ __volatile__("lbzcix %0,0, %1"
+	__asm__ __volatile__(".machine push;   \
+			      .machine power6; \
+			      lbzcix %0,0, %1; \
+			      .machine pop;"
 			     : "=r" (ret) : "r" (paddr) : "memory");
 	return ret;
 }

@@ -383,7 +398,10 @@ static inline u8 __raw_rm_readb(volatile void __iomem *paddr)
 static inline u16 __raw_rm_readw(volatile void __iomem *paddr)
 {
 	u16 ret;
-	__asm__ __volatile__("lhzcix %0,0, %1"
+	__asm__ __volatile__(".machine push;   \
+			      .machine power6; \
+			      lhzcix %0,0, %1; \
+			      .machine pop;"
 			     : "=r" (ret) : "r" (paddr) : "memory");
 	return ret;
 }

@@ -391,7 +409,10 @@ static inline u16 __raw_rm_readw(volatile void __iomem *paddr)
 static inline u32 __raw_rm_readl(volatile void __iomem *paddr)
 {
 	u32 ret;
-	__asm__ __volatile__("lwzcix %0,0, %1"
+	__asm__ __volatile__(".machine push;   \
+			      .machine power6; \
+			      lwzcix %0,0, %1; \
+			      .machine pop;"
 			     : "=r" (ret) : "r" (paddr) : "memory");
 	return ret;
 }

@@ -399,7 +420,10 @@ static inline u32 __raw_rm_readl(volatile void __iomem *paddr)
 static inline u64 __raw_rm_readq(volatile void __iomem *paddr)
 {
 	u64 ret;
-	__asm__ __volatile__("ldcix %0,0, %1"
+	__asm__ __volatile__(".machine push;   \
+			      .machine power6; \
+			      ldcix %0,0, %1;  \
+			      .machine pop;"
 			     : "=r" (ret) : "r" (paddr) : "memory");
 	return ret;
 }

index cafad1960e76..a14a32f6c3cc 100644
@@ -191,8 +191,11 @@ extern long __get_user_bad(void);
  */
 #define __get_user_atomic_128_aligned(kaddr, uaddr, err)		\
 	__asm__ __volatile__(				\
+		".machine push\n"			\
+		".machine altivec\n"			\
 		"1:	lvx  0,0,%1	# get user\n"	\
 		" 	stvx 0,0,%2	# put kernel\n"	\
+		".machine pop\n"			\
 		"2:\n"					\
 		".section .fixup,\"ax\"\n"		\
 		"3:	li %0,%3\n"			\

index 617eba82531c..d89cf802d9aa 100644
@@ -669,7 +669,7 @@ static void __init kvm_use_magic_page(void)
 	on_each_cpu(kvm_map_magic_page, &features, 1);
 
 	/* Quick self-test to see if the mapping works */
-	if (!fault_in_pages_readable((const char *)KVM_MAGIC_PAGE, sizeof(u32))) {
+	if (fault_in_pages_readable((const char *)KVM_MAGIC_PAGE, sizeof(u32))) {
 		kvm_patching_worked = false;
 		return;
 	}

index 7a1c11a7cba5..716f8bb17461 100644
@@ -146,11 +146,18 @@ void __init reserve_crashkernel(void)
 	if (!crashk_res.start) {
 #ifdef CONFIG_PPC64
 		/*
-		 * On 64bit we split the RMO in half but cap it at half of
-		 * a small SLB (128MB) since the crash kernel needs to place
-		 * itself and some stacks to be in the first segment.
+		 * On the LPAR platform place the crash kernel to mid of
+		 * RMA size (512MB or more) to ensure the crash kernel
+		 * gets enough space to place itself and some stack to be
+		 * in the first segment. At the same time normal kernel
+		 * also get enough space to allocate memory for essential
+		 * system resource in the first segment. Keep the crash
+		 * kernel starts at 128MB offset on other platforms.
 		 */
-		crashk_res.start = min(0x8000000ULL, (ppc64_rma_size / 2));
+		if (firmware_has_feature(FW_FEATURE_LPAR))
+			crashk_res.start = ppc64_rma_size / 2;
+		else
+			crashk_res.start = min(0x8000000ULL, (ppc64_rma_size / 2));
 #else
 		crashk_res.start = KDUMP_KERNELBASE;
 #endif

index c1e2e351ebff..9392661ac8a8 100644
@@ -1244,6 +1244,12 @@ int __init early_init_dt_scan_rtas(unsigned long node,
 	entryp = of_get_flat_dt_prop(node, "linux,rtas-entry", NULL);
 	sizep  = of_get_flat_dt_prop(node, "rtas-size", NULL);
 
+#ifdef CONFIG_PPC64
+	/* need this feature to decide the crashkernel offset */
+	if (of_get_flat_dt_prop(node, "ibm,hypertas-functions", NULL))
+		powerpc_firmware_features |= FW_FEATURE_LPAR;
+#endif
+
 	if (basep && entryp && sizep) {
 		rtas.base = *basep;
 		rtas.entry = *entryp;

index 8dd4d2b83677..eb8c72846b7f 100644
@@ -1495,7 +1495,7 @@ int kvmppc_handle_vmx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
 {
 	enum emulation_result emulated = EMULATE_DONE;
 
-	if (vcpu->arch.mmio_vsx_copy_nums > 2)
+	if (vcpu->arch.mmio_vmx_copy_nums > 2)
 		return EMULATE_FAIL;
 
 	while (vcpu->arch.mmio_vmx_copy_nums) {

@@ -1592,7 +1592,7 @@ int kvmppc_handle_vmx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
 	unsigned int index = rs & KVM_MMIO_REG_MASK;
 	enum emulation_result emulated = EMULATE_DONE;
 
-	if (vcpu->arch.mmio_vsx_copy_nums > 2)
+	if (vcpu->arch.mmio_vmx_copy_nums > 2)
 		return EMULATE_FAIL;
 
 	vcpu->arch.io_gpr = rs;

index dc6728dacbc6..27650cd5857f 100644
@@ -906,7 +906,10 @@ NOKPROBE_SYMBOL(emulate_dcbz);
 
 #define __put_user_asmx(x, addr, err, op, cr)		\
 	__asm__ __volatile__(				\
+		".machine push\n"			\
+		".machine power8\n"			\
 		"1:	" op " %2,0,%3\n"		\
+		".machine pop\n"			\
 		"	mfcr	%1\n"			\
 		"2:\n"					\
 		".section .fixup,\"ax\"\n"		\

@@ -919,7 +922,10 @@ NOKPROBE_SYMBOL(emulate_dcbz);
 
 #define __get_user_asmx(x, addr, err, op)		\
 	__asm__ __volatile__(				\
+		".machine push\n"			\
+		".machine power8\n"			\
 		"1:	"op" %1,0,%2\n"			\
+		".machine pop\n"			\
 		"2:\n"					\
 		".section .fixup,\"ax\"\n"		\
 		"3:	li	%0,%3\n"		\

@@ -2912,7 +2918,7 @@ int emulate_loadstore(struct pt_regs *regs, struct instruction_op *op)
 			__put_user_asmx(op->val, ea, err, "stbcx.", cr);
 			break;
 		case 2:
-			__put_user_asmx(op->val, ea, err, "stbcx.", cr);
+			__put_user_asmx(op->val, ea, err, "sthcx.", cr);
 			break;
 #endif
 		case 4:

index 1cfe57b51d7e..3f78007a7282 100644
@@ -121,7 +121,7 @@ static void __init kasan_remap_early_shadow_ro(void)
 		pmd_t *pmd = pmd_offset(pud_offset(pgd_offset_k(k_cur), k_cur), k_cur);
 		pte_t *ptep = pte_offset_kernel(pmd, k_cur);
 
-		if ((pte_val(*ptep) & PTE_RPN_MASK) != pa)
+		if (pte_page(*ptep) != virt_to_page(lm_alias(kasan_early_shadow_page)))
 			continue;
 
 		__set_pte_at(&init_mm, k_cur, ptep, pfn_pte(PHYS_PFN(pa), prot), 0);

index eb82dda884e5..d76e800a1f33 100644
@@ -1441,7 +1441,11 @@ static int trace_imc_event_init(struct perf_event *event)
 	event->hw.idx = -1;
 	target = event->hw.target;
 
-	event->pmu->task_ctx_nr = perf_hw_context;
+	/*
+	 * There can only be a single PMU for perf_hw_context events which is assigned to
+	 * core PMU. Hence use "perf_sw_context" for trace_imc.
+	 */
+	event->pmu->task_ctx_nr = perf_sw_context;
 	event->destroy = reset_global_refc;
 	return 0;
 }

index e9617d35fd1f..209b12323aa4 100644
@@ -153,6 +153,7 @@ int mpc8xx_pic_init(void)
 	if (mpc8xx_pic_host == NULL) {
 		printk(KERN_ERR "MPC8xx PIC: failed to allocate irq host!\n");
 		ret = -ENOMEM;
+		goto out;
 	}
 
 	ret = 0;

index 8035caf6e297..1c31863a9be6 100644
@@ -43,7 +43,11 @@ static unsigned long rng_whiten(struct powernv_rng *rng, unsigned long val)
 	unsigned long parity;
 
 	/* Calculate the parity of the value */
-	asm ("popcntd %0,%1" : "=r" (parity) : "r" (val));
+	asm (".machine push;   \
+	      .machine power7; \
+	      popcntd %0,%1;   \
+	      .machine pop;"
+	     : "=r" (parity) : "r" (val));
 
 	/* xor our value with the previous mask */
 	val ^= rng->mask;

index 8963eaffb1b7..39186ad6b3c3 100644
@@ -86,7 +86,7 @@ static LIST_HEAD(gtms);
  */
 struct gtm_timer *gtm_get_timer16(void)
 {
-	struct gtm *gtm = NULL;
+	struct gtm *gtm;
 	int i;
 
 	list_for_each_entry(gtm, &gtms, list_node) {

@@ -103,7 +103,7 @@ struct gtm_timer *gtm_get_timer16(void)
 		spin_unlock_irq(&gtm->lock);
 	}
 
-	if (gtm)
+	if (!list_empty(&gtms))
 		return ERR_PTR(-EBUSY);
 	return ERR_PTR(-ENODEV);
 }

index 22a93009362d..1de5991916eb 100644
@@ -77,7 +77,7 @@ void perf_callchain_user(struct perf_callchain_entry_ctx *entry,
 
 bool fill_callchain(unsigned long pc, void *entry)
 {
-	return perf_callchain_store(entry, pc);
+	return perf_callchain_store(entry, pc) == 0;
 }
 
 void notrace walk_stackframe(struct task_struct *task,

index 0117489e9b30..750acc134432 100644
@@ -217,7 +217,7 @@ void mconsole_go(struct mc_request *req)
 
 void mconsole_stop(struct mc_request *req)
 {
-	deactivate_fd(req->originating_fd, MCONSOLE_IRQ);
+	block_signals();
 	os_set_fd_block(req->originating_fd, 1);
 	mconsole_reply(req, "stopped", 0, 0);
 	for (;;) {

@@ -240,6 +240,7 @@ void mconsole_stop(struct mc_request *req)
 	}
 	os_set_fd_block(req->originating_fd, 0);
 	mconsole_reply(req, "", 0, 0);
+	unblock_signals();
 }
 
 static DEFINE_SPINLOCK(mc_devices_lock);

index da289a44d511..f4d2322f4c62 100644
@@ -460,7 +460,7 @@ static u64 pt_config_filters(struct perf_event *event)
 			pt->filters.filter[range].msr_b = filter->msr_b;
 		}
 
-		rtit_ctl |= filter->config << pt_address_ranges[range].reg_off;
+		rtit_ctl |= (u64)filter->config << pt_address_ranges[range].reg_off;
 	}
 
 	return rtit_ctl;

index 6ff2c7cac4c4..408b51aba293 100644
@@ -487,7 +487,7 @@ static void __send_ipi_mask(const struct cpumask *mask, int vector)
 		} else if (apic_id < min && max - apic_id < KVM_IPI_CLUSTER_SIZE) {
 			ipi_bitmap <<= min - apic_id;
 			min = apic_id;
-		} else if (apic_id < min + KVM_IPI_CLUSTER_SIZE) {
+		} else if (apic_id > min && apic_id < min + KVM_IPI_CLUSTER_SIZE) {
 			max = apic_id < max ? max : apic_id;
 		} else {
 			ret = kvm_hypercall4(KVM_HC_SEND_IPI, (unsigned long)ipi_bitmap,

index 60c8dcb907a5..ea48a2fb1677 100644
@@ -1714,11 +1714,6 @@ static int __load_segment_descriptor(struct x86_emulate_ctxt *ctxt,
 		goto exception;
 	}
 
-	if (!seg_desc.p) {
-		err_vec = (seg == VCPU_SREG_SS) ? SS_VECTOR : NP_VECTOR;
-		goto exception;
-	}
-
 	dpl = seg_desc.dpl;
 
 	switch (seg) {

@@ -1758,6 +1753,10 @@ static int __load_segment_descriptor(struct x86_emulate_ctxt *ctxt,
 	case VCPU_SREG_TR:
 		if (seg_desc.s || (seg_desc.type != 1 && seg_desc.type != 9))
 			goto exception;
+		if (!seg_desc.p) {
+			err_vec = NP_VECTOR;
+			goto exception;
+		}
 		old_desc = seg_desc;
 		seg_desc.type |= 2; /* busy */
 		ret = ctxt->ops->cmpxchg_emulated(ctxt, desc_addr, &old_desc, &seg_desc,

@@ -1782,6 +1781,11 @@ static int __load_segment_descriptor(struct x86_emulate_ctxt *ctxt,
 		break;
 	}
 
+	if (!seg_desc.p) {
+		err_vec = (seg == VCPU_SREG_SS) ? SS_VECTOR : NP_VECTOR;
+		goto exception;
+	}
+
 	if (seg_desc.s) {
 		/* mark segment as accessed */
 		if (!(seg_desc.type & 1)) {

index be92e8dccda3..ca66459a2e89 100644
@@ -205,7 +205,7 @@ static int synic_set_msr(struct kvm_vcpu_hv_synic *synic,
 	struct kvm_vcpu *vcpu = synic_to_vcpu(synic);
 	int ret;
 
-	if (!synic->active && !host)
+	if (!synic->active && (!host || data))
 		return 1;
 
 	trace_kvm_hv_synic_set_msr(vcpu->vcpu_id, msr, data, host);

@@ -251,6 +251,9 @@ static int synic_set_msr(struct kvm_vcpu_hv_synic *synic,
 	case HV_X64_MSR_EOM: {
 		int i;
 
+		if (!synic->active)
+			break;
+
 		for (i = 0; i < ARRAY_SIZE(synic->sint); i++)
 			kvm_hv_notify_acked_sint(vcpu, i);
 		break;

@@ -514,6 +517,11 @@ static int stimer_set_config(struct kvm_vcpu_hv_stimer *stimer, u64 config,
 {
 	union hv_stimer_config new_config = {.as_uint64 = config},
 		old_config = {.as_uint64 = stimer->config.as_uint64};
+	struct kvm_vcpu *vcpu = stimer_to_vcpu(stimer);
+	struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);
+
+	if (!synic->active && (!host || config))
+		return 1;
 
 	trace_kvm_hv_stimer_set_config(stimer_to_vcpu(stimer)->vcpu_id,
 				       stimer->index, config, host);

@@ -533,6 +541,12 @@ static int stimer_set_config(struct kvm_vcpu_hv_stimer *stimer, u64 config,
 static int stimer_set_count(struct kvm_vcpu_hv_stimer *stimer, u64 count,
 			    bool host)
 {
+	struct kvm_vcpu *vcpu = stimer_to_vcpu(stimer);
+	struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);
+
+	if (!synic->active && (!host || count))
+		return 1;
+
 	trace_kvm_hv_stimer_set_count(stimer_to_vcpu(stimer)->vcpu_id,
 				      stimer->index, count, host);
 

index eea2d6f10f59..afe3b8e61514 100644
@@ -2099,10 +2099,7 @@ void kvm_set_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu, u64 data)
 
 void kvm_lapic_set_tpr(struct kvm_vcpu *vcpu, unsigned long cr8)
 {
-	struct kvm_lapic *apic = vcpu->arch.apic;
-
-	apic_set_tpr(apic, ((cr8 & 0x0f) << 4)
-		     | (kvm_lapic_get_reg(apic, APIC_TASKPRI) & 4));
+	apic_set_tpr(vcpu->arch.apic, (cr8 & 0x0f) << 4);
 }
 
 u64 kvm_lapic_get_cr8(struct kvm_vcpu *vcpu)

104 lines not on this page · raw message

index d9990951fd0a..6bc656abbe66 100644
@@ -245,12 +245,10 @@ static int amd_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
 	/* MSR_EVNTSELn */
 	pmc = get_gp_pmc_amd(pmu, msr, PMU_TYPE_EVNTSEL);
 	if (pmc) {
-		if (data == pmc->eventsel)
-			return 0;
-		if (!(data & pmu->reserved_bits)) {
+		data &= ~pmu->reserved_bits;
+		if (data != pmc->eventsel)
 			reprogram_gp_counter(pmc, data);
-			return 0;
-		}
+		return 0;
 	}
 
 	return 1;

index 915bb1639763..1bff0f68f027 100644
@@ -40,7 +40,8 @@ static void msr_save_context(struct saved_context *ctxt)
 	struct saved_msr *end = msr + ctxt->saved_msrs.num;
 
 	while (msr < end) {
-		msr->valid = !rdmsrl_safe(msr->info.msr_no, &msr->info.reg.q);
+		if (msr->valid)
+			rdmsrl(msr->info.msr_no, msr->info.reg.q);
 		msr++;
 	}
 }

@@ -421,8 +422,10 @@ static int msr_build_context(const u32 *msr_id, const int num)
 	}
 
 	for (i = saved_msrs->num, j = 0; i < total_num; i++, j++) {
+		u64 dummy;
+
 		msr_array[i].info.msr_no	= msr_id[j];
-		msr_array[i].valid		= false;
+		msr_array[i].valid		= !rdmsrl_safe(msr_id[j], &dummy);
 		msr_array[i].info.reg.q		= 0;
 	}
 	saved_msrs->num   = total_num;

@@ -509,10 +512,24 @@ static int pm_cpu_check(const struct x86_cpu_id *c)
 	return ret;
 }
 
+static void pm_save_spec_msr(void)
+{
+	u32 spec_msr_id[] = {
+		MSR_IA32_SPEC_CTRL,
+		MSR_IA32_TSX_CTRL,
+		MSR_TSX_FORCE_ABORT,
+		MSR_IA32_MCU_OPT_CTRL,
+		MSR_AMD64_LS_CFG,
+	};
+
+	msr_build_context(spec_msr_id, ARRAY_SIZE(spec_msr_id));
+}
+
 static int pm_check_save_msr(void)
 {
 	dmi_check_system(msr_save_dmi_table);
 	pm_cpu_check(msr_save_cpu_table);
+	pm_save_spec_msr();
 
 	return 0;
 }

index e13b0b49fcdf..d7249f4c90f1 100644
@@ -512,10 +512,7 @@ irqreturn_t xen_pmu_irq_handler(int irq, void *dev_id)
 	return ret;
 }
 
-bool is_xen_pmu(int cpu)
-{
-	return (get_xenpmu_data() != NULL);
-}
+bool is_xen_pmu;
 
 void xen_pmu_init(int cpu)
 {

@@ -526,7 +523,7 @@ void xen_pmu_init(int cpu)
 
 	BUILD_BUG_ON(sizeof(struct xen_pmu_data) > PAGE_SIZE);
 
-	if (xen_hvm_domain())
+	if (xen_hvm_domain() || (cpu != 0 && !is_xen_pmu))
 		return;
 
 	xenpmu_data = (struct xen_pmu_data *)get_zeroed_page(GFP_KERNEL);

@@ -547,7 +544,8 @@ void xen_pmu_init(int cpu)
 	per_cpu(xenpmu_shared, cpu).xenpmu_data = xenpmu_data;
 	per_cpu(xenpmu_shared, cpu).flags = 0;
 
-	if (cpu == 0) {
+	if (!is_xen_pmu) {
+		is_xen_pmu = true;
 		perf_register_guest_info_callbacks(&xen_guest_cbs);
 		xen_pmu_arch_init();
 	}

index 0e83a160589b..65c58894fc79 100644
@@ -4,6 +4,8 @@
 
 #include <xen/interface/xenpmu.h>
 
+extern bool is_xen_pmu;
+
 irqreturn_t xen_pmu_irq_handler(int irq, void *dev_id);
 #ifdef CONFIG_XEN_HAVE_VPMU
 void xen_pmu_init(int cpu);

@@ -12,7 +14,6 @@ void xen_pmu_finish(int cpu);
 static inline void xen_pmu_init(int cpu) {}
 static inline void xen_pmu_finish(int cpu) {}
 #endif
-bool is_xen_pmu(int cpu);
 bool pmu_msr_read(unsigned int msr, uint64_t *val, int *err);
 bool pmu_msr_write(unsigned int msr, uint32_t low, uint32_t high, int *err);
 int pmu_apic_update(uint32_t reg);

index f8d39440b292..e5bd9eb42191 100644
@@ -18,6 +18,12 @@ static void __init xen_hvm_smp_prepare_boot_cpu(void)
 	 */
 	xen_vcpu_setup(0);
 
+	/*
+	 * Called again in case the kernel boots on vcpu >= MAX_VIRT_CPUS.
+	 * Refer to comments in xen_hvm_init_time_ops().
+	 */
+	xen_hvm_init_time_ops();
+
 	/*
 	 * The alternative logic (which patches the unlock/lock) runs before
 	 * the smp bootup up code is activated. Hence we need to set this up

index 0cebe5db691d..64e6ec2c32a7 100644
@@ -129,7 +129,7 @@ int xen_smp_intr_init_pv(unsigned int cpu)
 	per_cpu(xen_irq_work, cpu).irq = rc;
 	per_cpu(xen_irq_work, cpu).name = callfunc_name;
 
-	if (is_xen_pmu(cpu)) {
+	if (is_xen_pmu) {
 		pmu_name = kasprintf(GFP_KERNEL, "pmu%d", cpu);
 		rc = bind_virq_to_irqhandler(VIRQ_XENPMU, cpu,
 					     xen_pmu_irq_handler,

index befbdd8b17f0..4ec6c80f7687 100644
@@ -547,6 +547,11 @@ static void xen_hvm_setup_cpu_clockevents(void)
 
 void __init xen_hvm_init_time_ops(void)
 {
+	static bool hvm_time_initialized;
+
+	if (hvm_time_initialized)
+		return;
+
 	/*
 	 * vector callback is needed otherwise we cannot receive interrupts
 	 * on cpu > 0 and at this point we don't know how many cpus are

@@ -556,7 +561,22 @@ void __init xen_hvm_init_time_ops(void)
 		return;
 
 	if (!xen_feature(XENFEAT_hvm_safe_pvclock)) {
-		pr_info("Xen doesn't support pvclock on HVM, disable pv timer");
+		pr_info_once("Xen doesn't support pvclock on HVM, disable pv timer");
+		return;
+	}
+
+	/*
+	 * Only MAX_VIRT_CPUS 'vcpu_info' are embedded inside 'shared_info'.
+	 * The __this_cpu_read(xen_vcpu) is still NULL when Xen HVM guest
+	 * boots on vcpu >= MAX_VIRT_CPUS (e.g., kexec), To access
+	 * __this_cpu_read(xen_vcpu) via xen_clocksource_read() will panic.
+	 *
+	 * The xen_hvm_init_time_ops() should be called again later after
+	 * __this_cpu_read(xen_vcpu) is available.
+	 */
+	if (!__this_cpu_read(xen_vcpu)) {
+		pr_info("Delay xen_init_time_common() as kernel is running on vcpu=%d\n",
+			xen_vcpu_nr(0));
 		return;
 	}
 

@@ -568,6 +588,8 @@ void __init xen_hvm_init_time_ops(void)
 	x86_platform.calibrate_tsc = xen_tsc_khz;
 	x86_platform.get_wallclock = xen_get_wallclock;
 	x86_platform.set_wallclock = xen_set_wallclock;
+
+	hvm_time_initialized = true;
 }
 #endif
 

index 7495520d7a3e..fd1161de4535 100644
@@ -225,8 +225,8 @@ extern unsigned long get_wchan(struct task_struct *p);
 
 #define xtensa_set_sr(x, sr) \
 	({ \
-	 unsigned int v = (unsigned int)(x); \
-	 __asm__ __volatile__ ("wsr %0, "__stringify(sr) :: "a"(v)); \
+	 __asm__ __volatile__ ("wsr %0, "__stringify(sr) :: \
+			       "a"((unsigned int)(x))); \
 	 })
 
 #define xtensa_get_sr(sr) \

index 61cf6497a646..0dde21e0d3de 100644
@@ -61,7 +61,7 @@ static void patch_text(unsigned long addr, const void *data, size_t sz)
 			.data = data,
 		};
 		stop_machine_cpuslocked(patch_text_stop_machine,
-					&patch, NULL);
+					&patch, cpu_online_mask);
 	} else {
 		unsigned long flags;
 

index 342a1cfa48c5..c17eb794f0ae 100644
@@ -625,6 +625,12 @@ void bfq_bfqq_move(struct bfq_data *bfqd, struct bfq_queue *bfqq,
 {
 	struct bfq_entity *entity = &bfqq->entity;
 
+	/*
+	 * oom_bfqq is not allowed to move, oom_bfqq will hold ref to root_group
+	 * until elevator exit.
+	 */
+	if (bfqq == &bfqd->oom_bfqq)
+		return;
 	/*
 	 * Get extra reference to prevent bfqq from being freed in
 	 * next possible expire or deactivate.

index 1a0c581512f2..1d443d17cf7c 100644
@@ -2523,6 +2523,15 @@ bfq_setup_merge(struct bfq_queue *bfqq, struct bfq_queue *new_bfqq)
 	 * are likely to increase the throughput.
 	 */
 	bfqq->new_bfqq = new_bfqq;
+	/*
+	 * The above assignment schedules the following redirections:
+	 * each time some I/O for bfqq arrives, the process that
+	 * generated that I/O is disassociated from bfqq and
+	 * associated with new_bfqq. Here we increases new_bfqq->ref
+	 * in advance, adding the number of processes that are
+	 * expected to be associated with new_bfqq as they happen to
+	 * issue I/O.
+	 */
 	new_bfqq->ref += process_refs;
 	return new_bfqq;
 }

@@ -2582,6 +2591,10 @@ bfq_setup_cooperator(struct bfq_data *bfqd, struct bfq_queue *bfqq,
 {
 	struct bfq_queue *in_service_bfqq, *new_bfqq;
 
+	/* if a merge has already been setup, then proceed with that first */
+	if (bfqq->new_bfqq)
+		return bfqq->new_bfqq;
+
 	/*
 	 * Do not perform queue merging if the device is non
 	 * rotational and performs internal queueing. In fact, such a

@@ -2636,9 +2649,6 @@ bfq_setup_cooperator(struct bfq_data *bfqd, struct bfq_queue *bfqq,
 	if (bfq_too_late_for_merging(bfqq))
 		return NULL;
 
-	if (bfqq->new_bfqq)
-		return bfqq->new_bfqq;
-
 	if (!io_struct || unlikely(bfqq == &bfqd->oom_bfqq))
 		return NULL;
 

@@ -4793,7 +4803,7 @@ static struct request *bfq_dispatch_request(struct blk_mq_hw_ctx *hctx)
 	struct bfq_data *bfqd = hctx->queue->elevator->elevator_data;
 	struct request *rq;
 	struct bfq_queue *in_serv_queue;
-	bool waiting_rq, idle_timer_disabled;
+	bool waiting_rq, idle_timer_disabled = false;
 
 	spin_lock_irq(&bfqd->lock);
 

@@ -4801,14 +4811,15 @@ static struct request *bfq_dispatch_request(struct blk_mq_hw_ctx *hctx)
 	waiting_rq = in_serv_queue && bfq_bfqq_wait_request(in_serv_queue);
 
 	rq = __bfq_dispatch_request(hctx);
-
-	idle_timer_disabled =
-		waiting_rq && !bfq_bfqq_wait_request(in_serv_queue);
+	if (in_serv_queue == bfqd->in_service_queue) {
+		idle_timer_disabled =
+			waiting_rq && !bfq_bfqq_wait_request(in_serv_queue);
+	}
 
 	spin_unlock_irq(&bfqd->lock);
-
-	bfq_update_dispatch_stats(hctx->queue, rq, in_serv_queue,
-				  idle_timer_disabled);
+	bfq_update_dispatch_stats(hctx->queue, rq,
+			idle_timer_disabled ? in_serv_queue : NULL,
+				idle_timer_disabled);
 
 	return rq;
 }

index 4b022f0c49d2..a62692d13566 100644
@@ -7,6 +7,7 @@
 #include <linux/bio.h>
 #include <linux/blkdev.h>
 #include <linux/scatterlist.h>
+#include <linux/blk-cgroup.h>
 
 #include <trace/events/block.h>
 

@@ -571,6 +572,9 @@ static inline unsigned int blk_rq_get_max_segments(struct request *rq)
 static inline int ll_new_hw_segment(struct request *req, struct bio *bio,
 		unsigned int nr_phys_segs)
 {
+	if (!blk_cgroup_mergeable(req, bio))
+		goto no_merge;
+
 	if (blk_integrity_merge_bio(req->q, req, bio) == false)
 		goto no_merge;
 

@@ -662,6 +666,9 @@ static int ll_merge_requests_fn(struct request_queue *q, struct request *req,
 	if (total_phys_segments > blk_rq_get_max_segments(req))
 		return 0;
 
+	if (!blk_cgroup_mergeable(req, next->bio))
+		return 0;
+
 	if (blk_integrity_merge_rq(q, req, next) == false)
 		return 0;
 

@@ -885,6 +892,10 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio)
 	if (rq->rq_disk != bio->bi_disk)
 		return false;
 
+	/* don't merge across cgroup boundaries */
+	if (!blk_cgroup_mergeable(rq, bio))
+		return false;
+
 	/* only merge integrity protected bio into ditto rq */
 	if (blk_integrity_merge_bio(rq->q, rq, bio) == false)
 		return false;

index bf33570da5ac..3fb37135264b 100644
@@ -1060,15 +1060,17 @@ void blk_unregister_queue(struct gendisk *disk)
 	 */
 	if (queue_is_mq(q))
 		blk_mq_unregister_dev(disk_to_dev(disk), q);
-
-	kobject_uevent(&q->kobj, KOBJ_REMOVE);
-	kobject_del(&q->kobj);
 	blk_trace_remove_sysfs(disk_to_dev(disk));
 
 	mutex_lock(&q->sysfs_lock);
 	if (q->elevator)
 		elv_unregister_queue(q);
 	mutex_unlock(&q->sysfs_lock);
+
+	/* Now that we've deleted all child objects, we can delete the queue. */
+	kobject_uevent(&q->kobj, KOBJ_REMOVE);
+	kobject_del(&q->kobj);
+
 	mutex_unlock(&q->sysfs_dir_lock);
 
 	kobject_put(&disk_to_dev(disk)->kobj);

index 3f0ed9402582..321da9038995 100644
@@ -263,7 +263,7 @@ static int crypto_authenc_decrypt_tail(struct aead_request *req,
 		dst = scatterwalk_ffwd(areq_ctx->dst, req->dst, req->assoclen);
 
 	skcipher_request_set_tfm(skreq, ctx->enc);
-	skcipher_request_set_callback(skreq, aead_request_flags(req),
+	skcipher_request_set_callback(skreq, flags,
 				      req->base.complete, req->base.data);
 	skcipher_request_set_crypt(skreq, src, dst,
 				   req->cryptlen - authsize, req->iv);

index 0aa489711ec4..9cbafaf6dd85 100644
@@ -475,6 +475,8 @@ static int pkcs1pad_verify_complete(struct akcipher_request *req, int err)
 	pos++;
 
 	if (digest_info) {
+		if (digest_info->size > dst_len - pos)
+			goto done;
 		if (crypto_memneq(out_buf + pos, digest_info->data,
 				  digest_info->size))
 			goto done;

@@ -494,7 +496,7 @@ static int pkcs1pad_verify_complete(struct akcipher_request *req, int err)
 			   sg_nents_for_len(req->src,
 					    req->src_len + req->dst_len),
 			   req_ctx->out_buf + ctx->key_size,
-			   req->dst_len, ctx->key_size);
+			   req->dst_len, req->src_len);
 	/* Do the actual verification step. */
 	if (memcmp(req_ctx->out_buf + ctx->key_size, out_buf + pos,
 		   req->dst_len) != 0)

@@ -537,7 +539,7 @@ static int pkcs1pad_verify(struct akcipher_request *req)
 
 	if (WARN_ON(req->dst) ||
 	    WARN_ON(!req->dst_len) ||
-	    !ctx->key_size || req->src_len < ctx->key_size)
+	    !ctx->key_size || req->src_len != ctx->key_size)
 		return -EINVAL;
 
 	req_ctx->out_buf = kmalloc(ctx->key_size + req->dst_len, GFP_KERNEL);

index ceea6af79d12..bf4eb642f423 100644
@@ -169,6 +169,9 @@ acpi_ns_walk_namespace(acpi_object_type type,
 
 	if (start_node == ACPI_ROOT_OBJECT) {
 		start_node = acpi_gbl_root_node;
+		if (!start_node) {
+			return_ACPI_STATUS(AE_NO_NAMESPACE);
+		}
 	}
 
 	/* Null child means "get first node" */

index 1155fb9dcc3a..76b7539a37a9 100644
@@ -29,6 +29,7 @@
 
 #undef pr_fmt
 #define pr_fmt(fmt) "BERT: " fmt
+#define ACPI_BERT_PRINT_MAX_LEN 1024
 
 static int bert_disable;
 

@@ -58,8 +59,11 @@ static void __init bert_print_all(struct acpi_bert_region *region,
 		}
 
 		pr_info_once("Error records from previous boot:\n");
-
-		cper_estatus_print(KERN_INFO HW_ERR, estatus);
+		if (region_len < ACPI_BERT_PRINT_MAX_LEN)
+			cper_estatus_print(KERN_INFO HW_ERR, estatus);
+		else
+			pr_info_once("Max print length exceeded, table data is available at:\n"
+				     "/sys/firmware/acpi/tables/data/BERT");
 
 		/*
 		 * Because the boot error source is "one-time polled" type,

@@ -77,7 +81,7 @@ static int __init setup_bert_disable(char *str)
 {
 	bert_disable = 1;
 
-	return 0;
+	return 1;
 }
 __setup("bert_disable", setup_bert_disable);
 

index 2015a0967cbb..5ee3cb7fcd90 100644
@@ -891,7 +891,7 @@ EXPORT_SYMBOL_GPL(erst_clear);
 static int __init setup_erst_disable(char *str)
 {
 	erst_disable = 1;
-	return 0;
+	return 1;
 }
 
 __setup("erst_disable", setup_erst_disable);

index 267bdbf6a7bf..add6416e78f2 100644
@@ -219,7 +219,7 @@ static int __init hest_ghes_dev_register(unsigned int ghes_count)
 static int __init setup_hest_disable(char *str)
 {
 	hest_disable = HEST_DISABLED;
-	return 0;
+	return 1;
 }
 
 __setup("hest_disable", setup_hest_disable);

index 2826bd45c61a..0521b1d4c2fd 100644
@@ -738,6 +738,11 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
 	cpc_obj = &out_obj->package.elements[0];
 	if (cpc_obj->type == ACPI_TYPE_INTEGER)	{
 		num_ent = cpc_obj->integer.value;
+		if (num_ent <= 1) {
+			pr_debug("Unexpected _CPC NumEntries value (%d) for CPU:%d\n",
+				 num_ent, pr->id);
+			goto out_free;
+		}
 	} else {
 		pr_debug("Unexpected entry type(%d) for NumEntries\n",
 				cpc_obj->type);

index 53ae679c00f0..0ea5e677f00e 100644
@@ -1201,6 +1201,11 @@ static int flatten_lpi_states(struct acpi_processor *pr,
 	return 0;
 }
 
+int __weak acpi_processor_ffh_lpi_probe(unsigned int cpu)
+{
+	return -EOPNOTSUPP;
+}
+
 static int acpi_processor_get_lpi_info(struct acpi_processor *pr)
 {
 	int ret, i;

@@ -1209,6 +1214,11 @@ static int acpi_processor_get_lpi_info(struct acpi_processor *pr)
 	struct acpi_device *d = NULL;
 	struct acpi_lpi_states_array info[2], *tmp, *prev, *curr;
 
+	/* make sure our architecture has support */
+	ret = acpi_processor_ffh_lpi_probe(pr->id);
+	if (ret == -EOPNOTSUPP)
+		return ret;
+
 	if (!osc_pc_lpi_support_confirmed)
 		return -EOPNOTSUPP;
 

@@ -1260,11 +1270,6 @@ static int acpi_processor_get_lpi_info(struct acpi_processor *pr)
 	return 0;
 }
 
-int __weak acpi_processor_ffh_lpi_probe(unsigned int cpu)
-{
-	return -ENODEV;
-}
-
 int __weak acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi)
 {
 	return -ENODEV;

index a08e3eb2a6f9..a4b7cdd0c844 100644
@@ -692,7 +692,7 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
 	 */
 	if (obj->type == ACPI_TYPE_LOCAL_REFERENCE) {
 		if (index)
-			return -EINVAL;
+			return -ENOENT;
 
 		ret = acpi_bus_get_device(obj->reference.handle, &device);
 		if (ret)

index 982fe9112532..464260f66870 100644
@@ -145,7 +145,11 @@ struct sata_dwc_device {
 #endif
 };
 
-#define SATA_DWC_QCMD_MAX	32
+/*
+ * Allow one extra special slot for commands and DMA management
+ * to account for libata internal commands.
+ */
+#define SATA_DWC_QCMD_MAX	(ATA_MAX_QUEUE + 1)
 
 struct sata_dwc_device_port {
 	struct sata_dwc_device	*hsdev;

index cf7e5b4afc1b..26cd4ce3ac75 100644
@@ -747,7 +747,7 @@ static int __init save_async_options(char *buf)
 			"Too long list of driver names for 'driver_async_probe'!\n");
 
 	strlcpy(async_probe_drv_names, buf, ASYNC_DRV_NAMES_MAX_LEN);
-	return 0;
+	return 1;
 }
 __setup("driver_async_probe=", save_async_options);
 

index 23af54512053..ae382c4018fd 100644
@@ -2121,7 +2121,9 @@ static bool pm_ops_is_empty(const struct dev_pm_ops *ops)
 
 void device_pm_check_callbacks(struct device *dev)
 {
-	spin_lock_irq(&dev->power.lock);
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->power.lock, flags);
 	dev->power.no_pm_callbacks =
 		(!dev->bus || (pm_ops_is_empty(dev->bus->pm) &&
 		 !dev->bus->suspend && !dev->bus->resume)) &&

@@ -2130,7 +2132,7 @@ void device_pm_check_callbacks(struct device *dev)
 		(!dev->pm_domain || pm_ops_is_empty(&dev->pm_domain->ops)) &&
 		(!dev->driver || (pm_ops_is_empty(dev->driver->pm) &&
 		 !dev->driver->suspend && !dev->driver->resume));
-	spin_unlock_irq(&dev->power.lock);
+	spin_unlock_irqrestore(&dev->power.lock, flags);
 }
 
 bool dev_pm_smart_suspend_and_suspended(struct device *dev)

index ddbf56014c51..6da7f5749a7c 100644
@@ -1673,22 +1673,22 @@ struct sib_info {
 };
 void drbd_bcast_event(struct drbd_device *device, const struct sib_info *sib);
 
-extern void notify_resource_state(struct sk_buff *,
+extern int notify_resource_state(struct sk_buff *,
 				  unsigned int,
 				  struct drbd_resource *,
 				  struct resource_info *,
 				  enum drbd_notification_type);
-extern void notify_device_state(struct sk_buff *,
+extern int notify_device_state(struct sk_buff *,
 				unsigned int,
 				struct drbd_device *,
 				struct device_info *,
 				enum drbd_notification_type);
-extern void notify_connection_state(struct sk_buff *,
+extern int notify_connection_state(struct sk_buff *,
 				    unsigned int,
 				    struct drbd_connection *,
 				    struct connection_info *,
 				    enum drbd_notification_type);
-extern void notify_peer_device_state(struct sk_buff *,
+extern int notify_peer_device_state(struct sk_buff *,
 				     unsigned int,
 				     struct drbd_peer_device *,
 				     struct peer_device_info *,

156 lines not on this page · raw message

index f86cea4c0f8d..5e92632881d8 100644
@@ -195,7 +195,8 @@ void start_new_tl_epoch(struct drbd_connection *connection)
 void complete_master_bio(struct drbd_device *device,
 		struct bio_and_error *m)
 {
-	m->bio->bi_status = errno_to_blk_status(m->error);
+	if (unlikely(m->error))
+		m->bio->bi_status = errno_to_blk_status(m->error);
 	bio_endio(m->bio);
 	dec_ap_bio(device);
 }

index eeaa3b49b264..4dad4dd0ceb6 100644
@@ -1537,7 +1537,7 @@ int drbd_bitmap_io_from_worker(struct drbd_device *device,
 	return rv;
 }
 
-void notify_resource_state_change(struct sk_buff *skb,
+int notify_resource_state_change(struct sk_buff *skb,
 				  unsigned int seq,
 				  struct drbd_resource_state_change *resource_state_change,
 				  enum drbd_notification_type type)

@@ -1550,10 +1550,10 @@ void notify_resource_state_change(struct sk_buff *skb,
 		.res_susp_fen = resource_state_change->susp_fen[NEW],
 	};
 
-	notify_resource_state(skb, seq, resource, &resource_info, type);
+	return notify_resource_state(skb, seq, resource, &resource_info, type);
 }
 
-void notify_connection_state_change(struct sk_buff *skb,
+int notify_connection_state_change(struct sk_buff *skb,
 				    unsigned int seq,
 				    struct drbd_connection_state_change *connection_state_change,
 				    enum drbd_notification_type type)

@@ -1564,10 +1564,10 @@ void notify_connection_state_change(struct sk_buff *skb,
 		.conn_role = connection_state_change->peer_role[NEW],
 	};
 
-	notify_connection_state(skb, seq, connection, &connection_info, type);
+	return notify_connection_state(skb, seq, connection, &connection_info, type);
 }
 
-void notify_device_state_change(struct sk_buff *skb,
+int notify_device_state_change(struct sk_buff *skb,
 				unsigned int seq,
 				struct drbd_device_state_change *device_state_change,
 				enum drbd_notification_type type)

@@ -1577,10 +1577,10 @@ void notify_device_state_change(struct sk_buff *skb,
 		.dev_disk_state = device_state_change->disk_state[NEW],
 	};
 
-	notify_device_state(skb, seq, device, &device_info, type);
+	return notify_device_state(skb, seq, device, &device_info, type);
 }
 
-void notify_peer_device_state_change(struct sk_buff *skb,
+int notify_peer_device_state_change(struct sk_buff *skb,
 				     unsigned int seq,
 				     struct drbd_peer_device_state_change *p,
 				     enum drbd_notification_type type)

@@ -1594,7 +1594,7 @@ void notify_peer_device_state_change(struct sk_buff *skb,
 		.peer_resync_susp_dependency = p->resync_susp_dependency[NEW],
 	};
 
-	notify_peer_device_state(skb, seq, peer_device, &peer_device_info, type);
+	return notify_peer_device_state(skb, seq, peer_device, &peer_device_info, type);
 }
 
 static void broadcast_state_change(struct drbd_state_change *state_change)

@@ -1602,7 +1602,7 @@ static void broadcast_state_change(struct drbd_state_change *state_change)
 	struct drbd_resource_state_change *resource_state_change = &state_change->resource[0];
 	bool resource_state_has_changed;
 	unsigned int n_device, n_connection, n_peer_device, n_peer_devices;
-	void (*last_func)(struct sk_buff *, unsigned int, void *,
+	int (*last_func)(struct sk_buff *, unsigned int, void *,
 			  enum drbd_notification_type) = NULL;
 	void *uninitialized_var(last_arg);
 

index ba80f612d6ab..d5b0479bc9a6 100644
@@ -44,19 +44,19 @@ extern struct drbd_state_change *remember_old_state(struct drbd_resource *, gfp_
 extern void copy_old_to_new_state_change(struct drbd_state_change *);
 extern void forget_state_change(struct drbd_state_change *);
 
-extern void notify_resource_state_change(struct sk_buff *,
+extern int notify_resource_state_change(struct sk_buff *,
 					 unsigned int,
 					 struct drbd_resource_state_change *,
 					 enum drbd_notification_type type);
-extern void notify_connection_state_change(struct sk_buff *,
+extern int notify_connection_state_change(struct sk_buff *,
 					   unsigned int,
 					   struct drbd_connection_state_change *,
 					   enum drbd_notification_type type);
-extern void notify_device_state_change(struct sk_buff *,
+extern int notify_device_state_change(struct sk_buff *,
 				       unsigned int,
 				       struct drbd_device_state_change *,
 				       enum drbd_notification_type type);
-extern void notify_peer_device_state_change(struct sk_buff *,
+extern int notify_peer_device_state_change(struct sk_buff *,
 					    unsigned int,
 					    struct drbd_peer_device_state_change *,
 					    enum drbd_notification_type type);

index ffbe792410d1..6b3e27b8cd24 100644
@@ -794,33 +794,33 @@ static ssize_t loop_attr_backing_file_show(struct loop_device *lo, char *buf)
 
 static ssize_t loop_attr_offset_show(struct loop_device *lo, char *buf)
 {
-	return sprintf(buf, "%llu\n", (unsigned long long)lo->lo_offset);
+	return sysfs_emit(buf, "%llu\n", (unsigned long long)lo->lo_offset);
 }
 
 static ssize_t loop_attr_sizelimit_show(struct loop_device *lo, char *buf)
 {
-	return sprintf(buf, "%llu\n", (unsigned long long)lo->lo_sizelimit);
+	return sysfs_emit(buf, "%llu\n", (unsigned long long)lo->lo_sizelimit);
 }
 
 static ssize_t loop_attr_autoclear_show(struct loop_device *lo, char *buf)
 {
 	int autoclear = (lo->lo_flags & LO_FLAGS_AUTOCLEAR);
 
-	return sprintf(buf, "%s\n", autoclear ? "1" : "0");
+	return sysfs_emit(buf, "%s\n", autoclear ? "1" : "0");
 }
 
 static ssize_t loop_attr_partscan_show(struct loop_device *lo, char *buf)
 {
 	int partscan = (lo->lo_flags & LO_FLAGS_PARTSCAN);
 
-	return sprintf(buf, "%s\n", partscan ? "1" : "0");
+	return sysfs_emit(buf, "%s\n", partscan ? "1" : "0");
 }
 
 static ssize_t loop_attr_dio_show(struct loop_device *lo, char *buf)
 {
 	int dio = (lo->lo_flags & LO_FLAGS_DIRECT_IO);
 
-	return sprintf(buf, "%s\n", dio ? "1" : "0");
+	return sysfs_emit(buf, "%s\n", dio ? "1" : "0");
 }
 
 LOOP_ATTR_RO(backing_file);

index 4b3645e648ee..2a5cd502feae 100644
@@ -936,9 +936,17 @@ static int virtblk_probe(struct virtio_device *vdev)
 	err = virtio_cread_feature(vdev, VIRTIO_BLK_F_BLK_SIZE,
 				   struct virtio_blk_config, blk_size,
 				   &blk_size);
-	if (!err)
+	if (!err) {
+		err = blk_validate_block_size(blk_size);
+		if (err) {
+			dev_err(&vdev->dev,
+				"virtio_blk: invalid block size: 0x%x\n",
+				blk_size);
+			goto out_free_tags;
+		}
+
 		blk_queue_logical_block_size(q, blk_size);
-	else
+	} else
 		blk_size = queue_logical_block_size(q);
 
 	/* Use topology information if available */

index c2eb64bcd5d5..0e7f44461946 100644
@@ -980,6 +980,8 @@ static int btmtksdio_probe(struct sdio_func *func,
 	hdev->manufacturer = 70;
 	set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
 
+	sdio_set_drvdata(func, bdev);
+
 	err = hci_register_dev(hdev);
 	if (err < 0) {
 		dev_err(&func->dev, "Can't register HCI device\n");

@@ -987,8 +989,6 @@ static int btmtksdio_probe(struct sdio_func *func,
 		return err;
 	}
 
-	sdio_set_drvdata(func, bdev);
-
 	/* pm_runtime_enable would be done after the firmware is being
 	 * downloaded because the core layer probably already enables
 	 * runtime PM for this func such as the case host->caps &

index 1b4ad231e6ed..fd081bdd2dd8 100644
@@ -279,6 +279,8 @@ int hci_uart_register_device(struct hci_uart *hu,
 	if (err)
 		return err;
 
+	percpu_init_rwsem(&hu->proto_lock);
+
 	err = p->open(hu);
 	if (err)
 		goto err_open;

@@ -301,7 +303,6 @@ int hci_uart_register_device(struct hci_uart *hu,
 
 	INIT_WORK(&hu->init_ready, hci_uart_init_work);
 	INIT_WORK(&hu->write_work, hci_uart_write_work);
-	percpu_init_rwsem(&hu->proto_lock);
 
 	/* Only when vendor specific setup callback is provided, consider
 	 * the manufacturer information valid. This avoids filling in the

index e55705745d5e..f4c94f8acfe0 100644
@@ -96,6 +96,7 @@ static int atmel_trng_probe(struct platform_device *pdev)
 
 err_register:
 	clk_disable_unprepare(trng->clk);
+	atmel_trng_disable(trng);
 	return ret;
 }
 

101 lines not on this page · raw message

index 37f010421a36..58312062d435 100644
@@ -466,6 +466,8 @@ int tpm2_prepare_space(struct tpm_chip *chip, struct tpm_space *space, u8 *cmd,
 		       size_t cmdsiz);
 int tpm2_commit_space(struct tpm_chip *chip, struct tpm_space *space, void *buf,
 		      size_t *bufsiz);
+int tpm_devs_add(struct tpm_chip *chip);
+void tpm_devs_remove(struct tpm_chip *chip);
 
 void tpm_bios_log_setup(struct tpm_chip *chip);
 void tpm_bios_log_teardown(struct tpm_chip *chip);

68 lines not on this page · raw message

index b453029487a1..c736adef9d3c 100644
@@ -1961,6 +1961,13 @@ static void virtcons_remove(struct virtio_device *vdev)
 	list_del(&portdev->list);
 	spin_unlock_irq(&pdrvdata_lock);
 
+	/* Device is going away, exit any polling for buffers */
+	virtio_break_device(vdev);
+	if (use_multiport(portdev))
+		flush_work(&portdev->control_work);
+	else
+		flush_work(&portdev->config_work);
+
 	/* Disable interrupts for vqs */
 	vdev->config->reset(vdev);
 	/* Finish up work that's lined up */

@@ -2234,7 +2241,7 @@ static struct virtio_driver virtio_rproc_serial = {
 	.remove =	virtcons_remove,
 };
 
-static int __init init(void)
+static int __init virtio_console_init(void)
 {
 	int err;
 

@@ -2271,7 +2278,7 @@ static int __init init(void)
 	return err;
 }
 
-static void __exit fini(void)
+static void __exit virtio_console_fini(void)
 {
 	reclaim_dma_bufs();
 

@@ -2281,8 +2288,8 @@ static void __exit fini(void)
 	class_destroy(pdrvdata.class);
 	debugfs_remove_recursive(pdrvdata.debugfs_dir);
 }
-module_init(init);
-module_exit(fini);
+module_init(virtio_console_init);
+module_exit(virtio_console_fini);
 
 MODULE_DESCRIPTION("Virtio console driver");
 MODULE_LICENSE("GPL");

index a2f34d13fb54..6ea7da1d6d75 100644
@@ -162,6 +162,7 @@ static struct clk_div_table hdmia_div_table[] = {
 
 static struct clk_div_table rmii_div_table[] = {
 	{0, 4},   {1, 10},
+	{0, 0}
 };
 
 /* divider clocks */

index 790890978424..5144ada2c7e1 100644
@@ -140,7 +140,7 @@ static struct clk_div_table rmii_ref_div_table[] = {
 
 static struct clk_div_table usb3_mac_div_table[] = {
 	{ 1, 2 }, { 2, 3 }, { 3, 4 },
-	{ 0, 8 },
+	{ 0, 0 }
 };
 
 static struct clk_div_table i2s_div_table[] = {

index a2c6486ef170..f8417ee2961a 100644
@@ -28,11 +28,13 @@ static const struct clk_div_table spi_div_table[] = {
 	{ .val = 1, .div = 8, },
 	{ .val = 2, .div = 2, },
 	{ .val = 3, .div = 1, },
+	{ /* sentinel */ }
 };
 
 static const struct clk_div_table timer_div_table[] = {
 	{ .val = 0, .div = 256, },
 	{ .val = 1, .div = 1, },
+	{ /* sentinel */ }
 };
 
 struct clps711x_clk {

index 20ed0955416a..07ef9995b3cb 100644
@@ -638,6 +638,15 @@ static unsigned long si5341_output_clk_recalc_rate(struct clk_hw *hw,
 	u32 r_divider;
 	u8 r[3];
 
+	err = regmap_read(output->data->regmap,
+			SI5341_OUT_CONFIG(output), &val);
+	if (err < 0)
+		return err;
+
+	/* If SI5341_OUT_CFG_RDIV_FORCE2 is set, r_divider is 2 */
+	if (val & SI5341_OUT_CFG_RDIV_FORCE2)
+		return parent_rate / 2;
+
 	err = regmap_bulk_read(output->data->regmap,
 			SI5341_OUT_R_REG(output), r, 3);
 	if (err < 0)

@@ -654,13 +663,6 @@ static unsigned long si5341_output_clk_recalc_rate(struct clk_hw *hw,
 	r_divider += 1;
 	r_divider <<= 1;
 
-	err = regmap_read(output->data->regmap,
-			SI5341_OUT_CONFIG(output), &val);
-	if (err < 0)
-		return err;
-
-	if (val & SI5341_OUT_CFG_RDIV_FORCE2)
-		r_divider = 2;
 
 	return parent_rate / r_divider;
 }

index e4e1b4e94a67..13332f89e034 100644
@@ -637,6 +637,24 @@ static void clk_core_get_boundaries(struct clk_core *core,
 		*max_rate = min(*max_rate, clk_user->max_rate);
 }
 
+static bool clk_core_check_boundaries(struct clk_core *core,
+				      unsigned long min_rate,
+				      unsigned long max_rate)
+{
+	struct clk *user;
+
+	lockdep_assert_held(&prepare_lock);
+
+	if (min_rate > core->max_rate || max_rate < core->min_rate)
+		return false;
+
+	hlist_for_each_entry(user, &core->clks, clks_node)
+		if (min_rate > user->max_rate || max_rate < user->min_rate)
+			return false;
+
+	return true;
+}
+
 void clk_hw_set_rate_range(struct clk_hw *hw, unsigned long min_rate,
 			   unsigned long max_rate)
 {

@@ -2306,6 +2324,11 @@ int clk_set_rate_range(struct clk *clk, unsigned long min, unsigned long max)
 	clk->min_rate = min;
 	clk->max_rate = max;
 
+	if (!clk_core_check_boundaries(clk->core, min, max)) {
+		ret = -EINVAL;
+		goto out;
+	}
+
 	rate = clk_core_get_rate_nolock(clk->core);
 	if (rate < min || rate > max) {
 		/*

@@ -2334,6 +2357,7 @@ int clk_set_rate_range(struct clk *clk, unsigned long min, unsigned long max)
 		}
 	}
 
+out:
 	if (clk->exclusive_count)
 		clk_core_rate_protect(clk->core);
 

@@ -3278,6 +3302,19 @@ static void clk_core_reparent_orphans_nolock(void)
 			__clk_set_parent_after(orphan, parent, NULL);
 			__clk_recalc_accuracies(orphan);
 			__clk_recalc_rates(orphan, 0);
+
+			/*
+			 * __clk_init_parent() will set the initial req_rate to
+			 * 0 if the clock doesn't have clk_ops::recalc_rate and
+			 * is an orphan when it's registered.
+			 *
+			 * 'req_rate' is used by clk_set_rate_range() and
+			 * clk_put() to trigger a clk_set_rate() call whenever
+			 * the boundaries are modified. Let's make sure
+			 * 'req_rate' is set to something non-zero so that
+			 * clk_set_rate_range() doesn't drop the frequency.
+			 */
+			orphan->req_rate = orphan->rate;
 		}
 	}
 }

index fbea774ef687..58577548fe21 100644
@@ -859,7 +859,6 @@ static void __init imx7d_clocks_init(struct device_node *ccm_node)
 	hws[IMX7D_WDOG4_ROOT_CLK] = imx_clk_hw_gate4("wdog4_root_clk", "wdog_post_div", base + 0x49f0, 0);
 	hws[IMX7D_KPP_ROOT_CLK] = imx_clk_hw_gate4("kpp_root_clk", "ipg_root_clk", base + 0x4aa0, 0);
 	hws[IMX7D_CSI_MCLK_ROOT_CLK] = imx_clk_hw_gate4("csi_mclk_root_clk", "csi_mclk_post_div", base + 0x4490, 0);
-	hws[IMX7D_AUDIO_MCLK_ROOT_CLK] = imx_clk_hw_gate4("audio_mclk_root_clk", "audio_mclk_post_div", base + 0x4790, 0);
 	hws[IMX7D_WRCLK_ROOT_CLK] = imx_clk_hw_gate4("wrclk_root_clk", "wrclk_post_div", base + 0x47a0, 0);
 	hws[IMX7D_USB_CTRL_CLK] = imx_clk_hw_gate4("usb_ctrl_clk", "ahb_root_clk", base + 0x4680, 0);
 	hws[IMX7D_USB_PHY1_CLK] = imx_clk_hw_gate4("usb_phy1_clk", "pll_usb1_main_clk", base + 0x46a0, 0);

index 703f87622cf5..1ebf740380ef 100644
@@ -37,6 +37,7 @@ static const struct clk_div_table ahb_div_table[] = {
 	[1] = { .val = 1, .div = 4 },
 	[2] = { .val = 2, .div = 3 },
 	[3] = { .val = 3, .div = 3 },
+	[4] = { /* sentinel */ }
 };
 
 void __init ls1x_clk_init(void)

index a88101480e33..89c1adeb84d4 100644
@@ -263,7 +263,7 @@ static int clk_rcg2_determine_floor_rate(struct clk_hw *hw,
 
 static int __clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f)
 {
-	u32 cfg, mask;
+	u32 cfg, mask, d_val, not2d_val, n_minus_m;
 	struct clk_hw *hw = &rcg->clkr.hw;
 	int ret, index = qcom_find_src_index(hw, rcg->parent_map, f->src);
 

@@ -282,8 +282,17 @@ static int __clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f)
 		if (ret)
 			return ret;
 
+		/* Calculate 2d value */
+		d_val = f->n;
+
+		n_minus_m = f->n - f->m;
+		n_minus_m *= 2;
+
+		d_val = clamp_t(u32, d_val, f->m, n_minus_m);
+		not2d_val = ~d_val & mask;
+
 		ret = regmap_update_bits(rcg->clkr.regmap,
-				RCG_D_OFFSET(rcg), mask, ~f->n);
+				RCG_D_OFFSET(rcg), mask, not2d_val);
 		if (ret)
 			return ret;
 	}

@@ -638,6 +647,7 @@ static const struct frac_entry frac_table_pixel[] = {
 	{ 2, 9 },
 	{ 4, 9 },
 	{ 1, 1 },
+	{ 2, 3 },
 	{ }
 };
 

index e01f5f591d1e..de48ba7eba3a 100644
@@ -1074,7 +1074,7 @@ static struct clk_rcg2 sdcc1_apps_clk_src = {
 		.name = "sdcc1_apps_clk_src",
 		.parent_names = gcc_xo_gpll0_gpll2_gpll0_out_main_div2,
 		.num_parents = 4,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_floor_ops,
 	},
 };
 

index b7fc8c7ba195..14f0d5d84080 100644
@@ -107,6 +107,7 @@ static struct clk_alpha_pll gpll4_early = {
 
 static struct clk_alpha_pll_postdiv gpll4 = {
 	.offset = 0x1dc0,
+	.width = 4,
 	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_DEFAULT],
 	.clkr.hw.init = &(struct clk_init_data)
 	{

index ea39caf3d762..0c1b83bedb73 100644
@@ -191,6 +191,7 @@ static struct tegra_emc *emc_ensure_emc_driver(struct tegra_clk_emc *tegra)
 
 	tegra->emc = platform_get_drvdata(pdev);
 	if (!tegra->emc) {
+		put_device(&pdev->dev);
 		pr_err("%s: cannot find EMC driver\n", __func__);
 		return NULL;
 	}

index 5319cd380480..3bc55ab75314 100644
@@ -24,6 +24,7 @@ struct clk_hw *uniphier_clk_register_fixed_rate(struct device *dev,
 
 	init.name = name;
 	init.ops = &clk_fixed_rate_ops;
+	init.flags = 0;
 	init.parent_names = NULL;
 	init.num_parents = 0;
 

index eb596ff9e7bb..279ddff81ab4 100644
@@ -229,8 +229,10 @@ static int __init parse_pmtmr(char *arg)
 	int ret;
 
 	ret = kstrtouint(arg, 16, &base);
-	if (ret)
-		return ret;
+	if (ret) {
+		pr_warn("PMTMR: invalid 'pmtmr=' value: '%s'\n", arg);
+		return 1;
+	}
 
 	pr_info("PMTMR IOPort override: 0x%04x -> 0x%04x\n", pmtmr_ioport,
 		base);

index a3c73e972fce..bf2a6f64ba0c 100644
@@ -157,9 +157,9 @@ static __init int timer_of_base_init(struct device_node *np,
 	of_base->base = of_base->name ?
 		of_io_request_and_map(np, of_base->index, of_base->name) :
 		of_iomap(np, of_base->index);
-	if (IS_ERR(of_base->base)) {
-		pr_err("Failed to iomap (%s)\n", of_base->name);
-		return PTR_ERR(of_base->base);
+	if (IS_ERR_OR_NULL(of_base->base)) {
+		pr_err("Failed to iomap (%s:%s)\n", np->name, of_base->name);
+		return of_base->base ? PTR_ERR(of_base->base) : -ENOMEM;
 	}
 
 	return 0;

index 0770a83bf1a5..b3eea329f840 100644
@@ -633,6 +633,20 @@ static int ccp_terminate_all(struct dma_chan *dma_chan)
 	return 0;
 }
 
+static void ccp_dma_release(struct ccp_device *ccp)
+{
+	struct ccp_dma_chan *chan;
+	struct dma_chan *dma_chan;
+	unsigned int i;
+
+	for (i = 0; i < ccp->cmd_q_count; i++) {
+		chan = ccp->ccp_dma_chan + i;
+		dma_chan = &chan->dma_chan;
+		tasklet_kill(&chan->cleanup_tasklet);
+		list_del_rcu(&dma_chan->device_node);
+	}
+}
+
 int ccp_dmaengine_register(struct ccp_device *ccp)
 {
 	struct ccp_dma_chan *chan;

@@ -737,6 +751,7 @@ int ccp_dmaengine_register(struct ccp_device *ccp)
 	return 0;
 
 err_reg:
+	ccp_dma_release(ccp);
 	kmem_cache_destroy(ccp->dma_desc_cache);
 
 err_cache:

@@ -753,6 +768,7 @@ void ccp_dmaengine_unregister(struct ccp_device *ccp)
 		return;
 
 	dma_async_device_unregister(dma_dev);
+	ccp_dma_release(ccp);
 
 	kmem_cache_destroy(ccp->dma_desc_cache);
 	kmem_cache_destroy(ccp->dma_cmd_cache);

index 954f14bddf1d..dce30ae2b704 100644
@@ -295,6 +295,13 @@ static int cc_map_sg(struct device *dev, struct scatterlist *sg,
 {
 	int ret = 0;
 
+	if (!nbytes) {
+		*mapped_nents = 0;
+		*lbytes = 0;
+		*nents = 0;
+		return 0;
+	}
+
 	*nents = cc_get_sgl_nents(dev, sg, nbytes, lbytes);
 	if (*nents > max_sg_nents) {
 		*nents = 0;

index 547111079207..9443f31acd27 100644
@@ -329,7 +329,7 @@ static int mxs_dcp_aes_block_crypt(struct crypto_async_request *arq)
 		memset(key + AES_KEYSIZE_128, 0, AES_KEYSIZE_128);
 	}
 
-	for_each_sg(req->src, src, sg_nents(src), i) {
+	for_each_sg(req->src, src, sg_nents(req->src), i) {
 		src_buf = sg_virt(src);
 		len = sg_dma_len(src);
 		tlen += len;

index 8074e5de815b..5005b92b197d 100644
@@ -691,6 +691,7 @@ static int dax_fs_init(void)
 static void dax_fs_exit(void)
 {
 	kern_unmount(dax_mnt);
+	rcu_barrier();
 	kmem_cache_destroy(dax_cache);
 }
 

index 9635897458a0..e553c6a937f6 100644
@@ -145,6 +145,10 @@ static long udmabuf_create(const struct udmabuf_create_list *head,
 		if (ubuf->pagecount > pglimit)
 			goto err;
 	}
+
+	if (!ubuf->pagecount)
+		goto err;
+
 	ubuf->pages = kmalloc_array(ubuf->pagecount, sizeof(*ubuf->pages),
 				    GFP_KERNEL);
 	if (!ubuf->pages) {

index 19eee3d0900b..c51de498b5b4 100644
@@ -115,10 +115,8 @@ static dma_cookie_t shdma_tx_submit(struct dma_async_tx_descriptor *tx)
 		ret = pm_runtime_get(schan->dev);
 
 		spin_unlock_irq(&schan->chan_lock);
-		if (ret < 0) {
+		if (ret < 0)
 			dev_err(schan->dev, "%s(): GET = %d\n", __func__, ret);
-			pm_runtime_put(schan->dev);
-		}
 
 		pm_runtime_barrier(schan->dev);
 

index ce30d4e8bf25..f7c4337c1ffe 100644
@@ -165,7 +165,7 @@ static const struct kfd2kgd_calls kfd2kgd = {
 	.get_tile_config = amdgpu_amdkfd_get_tile_config,
 };
 
-struct kfd2kgd_calls *amdgpu_amdkfd_gfx_10_0_get_functions()
+struct kfd2kgd_calls *amdgpu_amdkfd_gfx_10_0_get_functions(void)
 {
 	return (struct kfd2kgd_calls *)&kfd2kgd;
 }

index 82823d9a8ba8..fddeea2b17e5 100644
@@ -1542,6 +1542,7 @@ int amdgpu_cs_fence_to_handle_ioctl(struct drm_device *dev, void *data,
 		return 0;
 
 	default:
+		dma_fence_put(fence);
 		return -EINVAL;
 	}
 }

index f9bef3154b99..2659202f2026 100644
@@ -263,7 +263,7 @@ static int amdgpu_gfx_kiq_acquire(struct amdgpu_device *adev,
 		    * adev->gfx.mec.num_pipe_per_mec
 		    * adev->gfx.mec.num_queue_per_pipe;
 
-	while (queue_bit-- >= 0) {
+	while (--queue_bit >= 0) {
 		if (test_bit(queue_bit, adev->gfx.mec.queue_bitmap))
 			continue;
 

index 532d1842f6a3..4cc0dd494a42 100644
@@ -1305,7 +1305,8 @@ void amdgpu_bo_release_notify(struct ttm_buffer_object *bo)
 	    !(abo->flags & AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE))
 		return;
 
-	dma_resv_lock(bo->base.resv, NULL);
+	if (WARN_ON_ONCE(!dma_resv_trylock(bo->base.resv)))
+		return;
 
 	r = amdgpu_fill_buffer(abo, AMDGPU_POISON, bo->base.resv, &fence);
 	if (!WARN_ON(r)) {

index 66387caf966e..3685e89415d5 100644
@@ -758,7 +758,7 @@ int kfd_create_crat_image_acpi(void **crat_image, size_t *size)
 	/* Fetch the CRAT table from ACPI */
 	status = acpi_get_table(CRAT_SIGNATURE, 0, &crat_table);
 	if (status == AE_NOT_FOUND) {
-		pr_warn("CRAT table not found\n");
+		pr_info("CRAT table not found\n");
 		return -ENODATA;
 	} else if (ACPI_FAILURE(status)) {
 		const char *err = acpi_format_exception(status);

index 986ff52d5750..f4b7f7e6c40e 100644
@@ -82,7 +82,7 @@ static void kfd_exit(void)
 	kfd_chardev_exit();
 }
 
-int kgd2kfd_init()
+int kgd2kfd_init(void)
 {
 	return kfd_init();
 }

index 8e4d863c7570..c5231c50c412 100644
@@ -5013,6 +5013,9 @@ static void amdgpu_dm_connector_add_common_modes(struct drm_encoder *encoder,
 		mode = amdgpu_dm_create_common_mode(encoder,
 				common_modes[i].name, common_modes[i].w,
 				common_modes[i].h);
+		if (!mode)
+			continue;
+
 		drm_mode_probed_add(connector, mode);
 		amdgpu_dm_connector->num_modes++;
 	}

@@ -7265,10 +7268,13 @@ dm_determine_update_type_for_commit(struct amdgpu_display_manager *dm,
 static int add_affected_mst_dsc_crtcs(struct drm_atomic_state *state, struct drm_crtc *crtc)
 {
 	struct drm_connector *connector;
-	struct drm_connector_state *conn_state;
+	struct drm_connector_state *conn_state, *old_conn_state;
 	struct amdgpu_dm_connector *aconnector = NULL;
 	int i;
-	for_each_new_connector_in_state(state, connector, conn_state, i) {
+	for_each_oldnew_connector_in_state(state, connector, old_conn_state, conn_state, i) {
+		if (!conn_state->crtc)
+			conn_state = old_conn_state;
+
 		if (conn_state->crtc != crtc)
 			continue;
 

index 623455cd7520..d6f988403941 100644
@@ -227,14 +227,6 @@ static const struct irq_source_info_funcs vupdate_no_lock_irq_info_funcs = {
 		.funcs = &pflip_irq_info_funcs\
 	}
 
-#define vupdate_int_entry(reg_num)\
-	[DC_IRQ_SOURCE_VUPDATE1 + reg_num] = {\
-		IRQ_REG_ENTRY(OTG, reg_num,\
-			OTG_GLOBAL_SYNC_STATUS, VUPDATE_INT_EN,\
-			OTG_GLOBAL_SYNC_STATUS, VUPDATE_EVENT_CLEAR),\
-		.funcs = &vblank_irq_info_funcs\
-	}
-
 /* vupdate_no_lock_int_entry maps to DC_IRQ_SOURCE_VUPDATEx, to match semantic
  * of DCE's DC_IRQ_SOURCE_VUPDATEx.
  */

@@ -348,12 +340,6 @@ irq_source_info_dcn21[DAL_IRQ_SOURCES_NUMBER] = {
 	dc_underflow_int_entry(6),
 	[DC_IRQ_SOURCE_DMCU_SCP] = dummy_irq_entry(),
 	[DC_IRQ_SOURCE_VBIOS_SW] = dummy_irq_entry(),
-	vupdate_int_entry(0),
-	vupdate_int_entry(1),
-	vupdate_int_entry(2),
-	vupdate_int_entry(3),
-	vupdate_int_entry(4),
-	vupdate_int_entry(5),
 	vupdate_no_lock_int_entry(0),
 	vupdate_no_lock_int_entry(1),
 	vupdate_no_lock_int_entry(2),

index 0cb9dd6986ec..9c3f9110895e 100644
@@ -1284,6 +1284,7 @@ static const struct of_device_id cdns_dsi_of_match[] = {
 	{ .compatible = "cdns,dsi" },
 	{ },
 };
+MODULE_DEVICE_TABLE(of, cdns_dsi_of_match);
 
 static struct platform_driver cdns_dsi_platform_driver = {
 	.probe  = cdns_dsi_drm_probe,

index 04431dbac4a4..fb0b64c965b7 100644
@@ -2118,7 +2118,7 @@ static void sii8620_init_rcp_input_dev(struct sii8620 *ctx)
 	if (ret) {
 		dev_err(ctx->dev, "Failed to register RC device\n");
 		ctx->error = ret;
-		rc_free_device(ctx->rc_dev);
+		rc_free_device(rc_dev);
 		return;
 	}
 	ctx->rc_dev = rc_dev;

index 77384c49fb8d..2fc27931d3b5 100644
@@ -1057,6 +1057,7 @@ __dw_mipi_dsi_probe(struct platform_device *pdev,
 	ret = mipi_dsi_host_register(&dsi->dsi_host);
 	if (ret) {
 		dev_err(dev, "Failed to register MIPI host: %d\n", ret);
+		pm_runtime_disable(dev);
 		dw_mipi_dsi_debugfs_remove(dsi);
 		return ERR_PTR(ret);
 	}

index 3f0a79890600..aeeab1b57aad 100644
@@ -4380,7 +4380,8 @@ bool drm_detect_monitor_audio(struct edid *edid)
 	if (!edid_ext)
 		goto end;
 
-	has_audio = ((edid_ext[3] & EDID_BASIC_AUDIO) != 0);
+	has_audio = (edid_ext[0] == CEA_EXT &&
+		    (edid_ext[3] & EDID_BASIC_AUDIO) != 0);
 
 	if (has_audio) {
 		DRM_DEBUG_KMS("Monitor has basic audio support\n");

@@ -4533,16 +4534,8 @@ static void drm_parse_hdmi_deep_color_info(struct drm_connector *connector,
 		  connector->name, dc_bpc);
 	info->bpc = dc_bpc;
 
-	/*
-	 * Deep color support mandates RGB444 support for all video
-	 * modes and forbids YCRCB422 support for all video modes per
-	 * HDMI 1.3 spec.
-	 */
-	info->color_formats = DRM_COLOR_FORMAT_RGB444;
-
 	/* YCRCB444 is optional according to spec. */
 	if (hdmi[6] & DRM_EDID_HDMI_DC_Y444) {
-		info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
 		DRM_DEBUG("%s: HDMI sink does YCRCB444 in deep color.\n",
 			  connector->name);
 	}

index 448c2f2d803a..f5ab891731d0 100644
@@ -166,6 +166,12 @@ static const struct dmi_system_id orientation_data[] = {
 		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "MicroPC"),
 		},
 		.driver_data = (void *)&lcd720x1280_rightside_up,
+	}, {	/* GPD Win Max */
+		.matches = {
+		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "GPD"),
+		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "G1619-01"),
+		},
+		.driver_data = (void *)&lcd800x1280_rightside_up,
 	}, {	/*
 		 * GPD Pocket, note that the the DMI data is less generic then
 		 * it seems, devices with a board-vendor of "AMI Corporation"

index be55548f352a..e24272428744 100644
@@ -68,8 +68,10 @@ static int imx_pd_connector_get_modes(struct drm_connector *connector)
 		ret = of_get_drm_display_mode(np, &imxpd->mode,
 					      &imxpd->bus_flags,
 					      OF_USE_NATIVE_MODE);
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