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Patch "PCI: Make PCI_ROM_ADDRESS_MASK a 32-bit constant" has been added to the 4.4-stable tree

PATCH [email protected] 1 participant 1 message Apr 3, 2018

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This is a note to let you know that I've just added the patch titled

PCI: Make PCI_ROM_ADDRESS_MASK a 32-bit constant

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
pci-make-pci_rom_address_mask-a-32-bit-constant.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From 76dc52684d0f72971d9f6cc7d5ae198061b715bd Mon Sep 17 00:00:00 2001

From: Matthias Kaehlcke <[email protected]>
Date: Fri, 14 Apr 2017 13:38:02 -0700
Subject: PCI: Make PCI_ROM_ADDRESS_MASK a 32-bit constant

From: Matthias Kaehlcke <[email protected]>

commit 76dc52684d0f72971d9f6cc7d5ae198061b715bd upstream.

A 64-bit value is not needed since a PCI ROM address consists in 32 bits. This fixes a clang warning about "implicit conversion from 'unsigned long' to 'u32'".

Also remove now unnecessary casts to u32 from __pci_read_base() and pci_std_update_resource().

---
 drivers/pci/probe.c           |    2 +-
 drivers/pci/setup-res.c       |    2 +-
 include/uapi/linux/pci_regs.h |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
drivers/pci/probe.c +1 -1
@@ -230,7 +230,7 @@ int __pci_read_base(struct pci_dev *dev,
 			res->flags |= IORESOURCE_ROM_ENABLE;
 		l64 = l & PCI_ROM_ADDRESS_MASK;
 		sz64 = sz & PCI_ROM_ADDRESS_MASK;
-		mask64 = (u32)PCI_ROM_ADDRESS_MASK;
+		mask64 = PCI_ROM_ADDRESS_MASK;
 	}
 
 	if (res->flags & IORESOURCE_MEM_64) {
drivers/pci/setup-res.c +1 -1
@@ -63,7 +63,7 @@ static void pci_std_update_resource(stru
 		mask = (u32)PCI_BASE_ADDRESS_IO_MASK;
 		new |= res->flags & ~PCI_BASE_ADDRESS_IO_MASK;
 	} else if (resno == PCI_ROM_RESOURCE) {
-		mask = (u32)PCI_ROM_ADDRESS_MASK;
+		mask = PCI_ROM_ADDRESS_MASK;
 	} else {
 		mask = (u32)PCI_BASE_ADDRESS_MEM_MASK;
 		new |= res->flags & ~PCI_BASE_ADDRESS_MEM_MASK;
include/uapi/linux/pci_regs.h +1 -1
@@ -106,7 +106,7 @@
 #define PCI_SUBSYSTEM_ID	0x2e
 #define PCI_ROM_ADDRESS		0x30	/* Bits 31..11 are address, 10..1 reserved */
 #define  PCI_ROM_ADDRESS_ENABLE	0x01
-#define PCI_ROM_ADDRESS_MASK	(~0x7ffUL)
+#define PCI_ROM_ADDRESS_MASK	(~0x7ffU)
 
 #define PCI_CAPABILITY_LIST	0x34	/* Offset of first capability list entry */
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/dm-ioctl-remove-double-parentheses.patch queue-4.4/genirq-use-cpumask_available-for-check-of-cpumask-variable.patch queue-4.4/fs-compat-remove-warning-from-compatible_ioctl.patch queue-4.4/selinux-remove-unnecessary-check-of-array-base-in-selinux_set_mapping.patch queue-4.4/pci-make-pci_rom_address_mask-a-32-bit-constant.patch queue-4.4/cpumask-add-helper-cpumask_available.patch