提交 50e3bbf9 编写于 作者: T Takashi Iwai

ALSA: hda - Use LPIB for ATI/AMD chipsets as default

ATI and AMD chipsets seem not providing the proper position-buffer
information, and it also doesn't provide FIFO register required by
VIACOMBO fix.  It's better to use LPIB for these.
Reported-by: NDavid Henningsson <david.henningsson@canonical.com>
Cc: <stable@kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
上级 314c3ff4
......@@ -2367,9 +2367,16 @@ static int __devinit check_position_fix(struct azx *chip, int fix)
/* Check VIA/ATI HD Audio Controller exist */
switch (chip->driver_type) {
case AZX_DRIVER_VIA:
case AZX_DRIVER_ATI:
/* Use link position directly, avoid any transfer problem. */
return POS_FIX_VIACOMBO;
case AZX_DRIVER_ATI:
/* ATI chipsets don't work well with position-buffer */
return POS_FIX_LPIB;
case AZX_DRIVER_GENERIC:
/* AMD chipsets also don't work with position-buffer */
if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
return POS_FIX_LPIB;
break;
}
return POS_FIX_AUTO;
......
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