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authorMike Travis <travis@sgi.com>2013-05-01 14:04:08 -0500
committerTakashi Iwai <tiwai@suse.de>2013-05-03 11:56:18 +0200
commit49d9e77e72cf178644b4db08fa211d8b4715ab13 (patch)
tree779e7fda8be1657fab54f3105510849e370dd337 /sound
parent9ea6cfbc2a31b87189a99fa8311c7d8d449f6a32 (diff)
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ALSA: hda - Fix system panic when DMA > 40 bits for Nvidia audio controllers
The audio driver mistakenly allows 64 bit addresses to be created for the audio driver on Nvidia GPUs. Unfortunately, the hardware normally only supports up to 40 bits of DMA. This can cause system panics as well as misdirected data when the address is > 40 bits as the upper part the address is truncated. Signed-off-by: Mike Travis <travis@sgi.com> Reviewed-by: Mike Habeck <habeck@sgi.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/hda_intel.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 7b213d589ef..de18722c487 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -615,7 +615,7 @@ enum {
/* quirks for Nvidia */
#define AZX_DCAPS_PRESET_NVIDIA \
(AZX_DCAPS_NVIDIA_SNOOP | AZX_DCAPS_RIRB_DELAY | AZX_DCAPS_NO_MSI |\
- AZX_DCAPS_ALIGN_BUFSIZE)
+ AZX_DCAPS_ALIGN_BUFSIZE | AZX_DCAPS_NO_64BIT)
#define AZX_DCAPS_PRESET_CTHDA \
(AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_4K_BDLE_BOUNDARY)