This is a note to let you know that I've just added the patch titled
PCI: Fix incorrect vgaarb conditional in WARN_ON()
to the 3.14-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-fix-incorrect-vgaarb-conditional-in-warn_on.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 67ebd8140dc8923c65451fa0f6a8eee003c4dcd3 Mon Sep 17 00:00:00 2001
From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Date: Sat, 5 Apr 2014 15:14:22 -0600
Subject: PCI: Fix incorrect vgaarb conditional in WARN_ON()
From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
commit 67ebd8140dc8923c65451fa0f6a8eee003c4dcd3 upstream.
3448a19da479 "vgaarb: use bridges to control VGA routing where possible"
added the "flags & PCI_VGA_STATE_CHANGE_DECODES" condition to an existing
WARN_ON(), but used bitwise AND (&) instead of logical AND (&&), so the
condition is never true. Replace with logical AND.
Found by Coverity (CID 142811).
Fixes: 3448a19da479 "vgaarb: use bridges to control VGA routing where possible"
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Acked-by: Yinghai Lu <yinghai@xxxxxxxxxx>
Acked-by: David Airlie <airlied@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pci/pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -4102,7 +4102,7 @@ int pci_set_vga_state(struct pci_dev *de
u16 cmd;
int rc;
- WARN_ON((flags & PCI_VGA_STATE_CHANGE_DECODES) & (command_bits & ~(PCI_COMMAND_IO|PCI_COMMAND_MEMORY)));
+ WARN_ON((flags & PCI_VGA_STATE_CHANGE_DECODES) && (command_bits & ~(PCI_COMMAND_IO|PCI_COMMAND_MEMORY)));
/* ARCH specific VGA enables */
rc = pci_set_vga_state_arch(dev, decode, command_bits, flags);
Patches currently in stable-queue which might be from bhelgaas@xxxxxxxxxx are
queue-3.14/pci-add-new-id-for-intel-gpu-spurious-interrupt-quirk.patch
queue-3.14/pci-fix-incorrect-vgaarb-conditional-in-warn_on.patch
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