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

ACPI, PCI, irq: remove redundant check for null string pointer

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: acpi-pci-irq-remove-redundant-check-for-null-string-pointer.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 45288978859119c019eff93f0cb838a0de100bcc Mon Sep 17 00:00:00 2001

From: Colin Ian King colin.king@canonical.com Date: Tue, 5 Jan 2016 10:57:11 +0000 Subject: ACPI, PCI, irq: remove redundant check for null string pointer

From: Colin Ian King colin.king@canonical.com

commit 45288978859119c019eff93f0cb838a0de100bcc upstream.

source is decleared as a 4 byte char array in struct acpi_pci_routing_table so !prt->source is a redundant null string pointer check. Detected with smatch:

drivers/acpi/pci_irq.c:134 do_prt_fixups() warn: this array is probably non-NULL. 'prt->source'

Signed-off-by: Colin Ian King colin.king@canonical.com Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Cc: Nathan Chancellor natechancellor@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/acpi/pci_irq.c | 3 --- 1 file changed, 3 deletions(-)

--- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -131,9 +131,6 @@ static void do_prt_fixups(struct acpi_pr quirk = &prt_quirks[i];

/* All current quirks involve link devices, not GSIs */ - if (!prt->source) - continue; - if (dmi_check_system(quirk->system) && entry->id.segment == quirk->segment && entry->id.bus == quirk->bus &&

Patches currently in stable-queue which might be from colin.king@canonical.com are

queue-4.4/acpi-pci-irq-remove-redundant-check-for-null-string-pointer.patch