ARM: remove NR_IRQS dependency for ARM-specific HARDIRQ_BITS definition

As a first step towards removing NR_IRQS, remove the ARM customization of HARDIRQ_BITS based on NR_IRQS.

The generic code in <linux/hardirq.h> already has a default value of 10 for HARDIRQ_BITS which is the max used on ARM, so let's just remove the NR_IRQS based customization and use the generic default.

Signed-off-by Kevin Hilman <[email protected]>

---
 arch/arm/include/asm/hardirq.h |   17 -----------------
 1 files changed, 0 insertions(+), 17 deletions(-)

arch/arm/include/asm/hardirq.h +0 -17

index 89ad180..96cb097 100644
@@ -30,23 +30,6 @@ u64 smp_irq_stat_cpu(unsigned int cpu);
 
 #define arch_irq_stat_cpu	smp_irq_stat_cpu
 
-#if NR_IRQS > 512
-#define HARDIRQ_BITS	10
-#elif NR_IRQS > 256
-#define HARDIRQ_BITS	9
-#else
-#define HARDIRQ_BITS	8
-#endif
-
-/*
- * The hardirq mask has to be large enough to have space
- * for potentially all IRQ sources in the system nesting
- * on a single CPU:
- */
-#if (1 << HARDIRQ_BITS) < NR_IRQS
-# error HARDIRQ_BITS is too low!
-#endif
-
 #define __ARCH_IRQ_EXIT_IRQS_DISABLED	1
 
 #endif /* __ASM_HARDIRQ_H */

Signature · 7 lines

1.7.3.4


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Quoted 3 lines · Kevin Hilman

As a first step towards removing NR_IRQS, remove the ARM customization of HARDIRQ_BITS based on NR_IRQS.

Quoted 5 lines

The generic code in <linux/hardirq.h> already has a default value of 10 for HARDIRQ_BITS which is the max used on ARM, so let's just remove the NR_IRQS based customization and use the generic default.

Signed-off-by Kevin Hilman <[email protected]>

Acked-by Nicolas Pitre <[email protected]>