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%3Ba=su...

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 stable@vger.kernel.org know about it.

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

From: Matthias Kaehlcke mka@chromium.org Date: Fri, 14 Apr 2017 13:38:02 -0700 Subject: PCI: Make PCI_ROM_ADDRESS_MASK a 32-bit constant

From: Matthias Kaehlcke mka@chromium.org

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().

Signed-off-by: Matthias Kaehlcke mka@chromium.org Signed-off-by: Bjorn Helgaas bhelgaas@google.com Cc: Nathan Chancellor natechancellor@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- 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(-)

--- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -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) { --- a/drivers/pci/setup-res.c +++ b/drivers/pci/setup-res.c @@ -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; --- a/include/uapi/linux/pci_regs.h +++ b/include/uapi/linux/pci_regs.h @@ -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 mka@chromium.org 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