The patch titled
hda_intel: enable snoop for nvidia HDA controller
has been removed from the -mm tree. Its filename was
hda_intel-enable-snoop-for-nvidia-hda-controller.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: hda_intel: enable snoop for nvidia HDA controller
From: Peer Chen <peerchen@xxxxxxxxx>
Enable the snoop for nvidia hda controller to avoid data coherence issue.
Signed-off-by: Peer Chen <peerchen@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
sound/pci/hda/hda_intel.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff -puN sound/pci/hda/hda_intel.c~hda_intel-enable-snoop-for-nvidia-hda-controller sound/pci/hda/hda_intel.c
--- a/sound/pci/hda/hda_intel.c~hda_intel-enable-snoop-for-nvidia-hda-controller
+++ a/sound/pci/hda/hda_intel.c
@@ -278,6 +278,9 @@ enum {
/* Defines for Nvidia HDA support */
#define NVIDIA_HDA_TRANSREG_ADDR 0x4e
#define NVIDIA_HDA_ENABLE_COHBITS 0x0f
+#define NVIDIA_HDA_ISTRM_COH 0x4d
+#define NVIDIA_HDA_OSTRM_COH 0x4c
+#define NVIDIA_HDA_ENABLE_COHBIT 0x01
/* Defines for Intel SCH HDA snoop control */
#define INTEL_SCH_HDA_DEVC 0x78
@@ -900,6 +903,12 @@ static void azx_init_pci(struct azx *chi
update_pci_byte(chip->pci,
NVIDIA_HDA_TRANSREG_ADDR,
0x0f, NVIDIA_HDA_ENABLE_COHBITS);
+ update_pci_byte(chip->pci,
+ NVIDIA_HDA_ISTRM_COH,
+ 0x01, NVIDIA_HDA_ENABLE_COHBIT);
+ update_pci_byte(chip->pci,
+ NVIDIA_HDA_OSTRM_COH,
+ 0x01, NVIDIA_HDA_ENABLE_COHBIT);
break;
case AZX_DRIVER_SCH:
pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
_
Patches currently in -mm which might be from peerchen@xxxxxxxxx are
origin.patch
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