+++ /dev/null
-From: Tejun Heo <tj@kernel.org>
-Subject: x86: disallow DAC for MCP51 PCI bridge
-References: bnc#463829
-
-MCP51 corrupts DAC transfers. Disallow it. Reported by pgnet on
-bnc#463829.
-
- https://bugzilla.novell.com/show_bug.cgi?id=463829
-
-Signed-off-by: Tejun Heo <tj@kernel.org>
-Reported-by: pgnet <pgnet.trash@gmail.com>
-Signed-off-by: Tejun Heo <teheo@suse.de>
----
- arch/x86/kernel/pci-dma.c | 14 ++++++++++++++
- 1 file changed, 14 insertions(+)
-
-Index: linux-2.6.27-SLE11_BRANCH/arch/x86/kernel/pci-dma.c
-===================================================================
---- linux-2.6.27-SLE11_BRANCH.orig/arch/x86/kernel/pci-dma.c
-+++ linux-2.6.27-SLE11_BRANCH/arch/x86/kernel/pci-dma.c
-@@ -415,4 +415,18 @@ static __devinit void via_no_dac(struct
- }
- }
- DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_ANY_ID, via_no_dac);
-+
-+/*
-+ * MCP51 PCI bridge corrupts data for DAC. Disable it. Reported in
-+ * bnc#463829.
-+ */
-+static __devinit void mcp51_no_dac(struct pci_dev *dev)
-+{
-+ if (forbid_dac == 0) {
-+ printk(KERN_INFO
-+ "PCI: MCP51 PCI bridge detected. Disabling DAC.\n");
-+ forbid_dac = 1;
-+ }
-+}
-+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x026f, mcp51_no_dac);
- #endif