| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 10/59] PCI: Fix incorrect vgaarb conditional in WARN_ON() | Date | Fri, 4 Jul 2014 15:18:59 -0700 |
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3.14-stable review patch. If anyone has any objections, please let me know.
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From: Bjorn Helgaas <bhelgaas@google.com>
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@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org> Acked-by: David Airlie <airlied@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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);
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