ALSA: hda - Use position_fix=3 as default for AMD chipsets

AMD chipsets often behave pretty badly regarding the DMA position
reporting.  It results in the bad quality audio recording.
Using position_fix=3 works well in general for them, so let's enable
it as default for AMD.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index f95ff6e029a9..010fd3181961 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2364,6 +2364,11 @@ static int __devinit check_position_fix(struct azx *chip, int fix)
         case AZX_DRIVER_ATI:
                 /* Use link position directly, avoid any transfer problem. */
                 return POS_FIX_VIACOMBO;
+        case AZX_DRIVER_GENERIC:
+                /* AMD chipsets behave often badly, too */
+                if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
+                        return POS_FIX_VIACOMBO;
+                break;
         }
 
         return POS_FIX_AUTO;