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ALSA: fix hda AZX_DCAPS_NO_TCSEL quirk check in driver_caps 

Commit 9477c58e33 ("ALSA: hda - Reorganize controller quriks with bit
flags") changed the driver type compares into various quirk bits.
However, the check for AZX_DCAPS_NO_TCSEL got reverted: instead of
clearing TCSEL for chipsets that have that standard capability, it
cleared then when the NO_TCSEL bit was set.

This can lead to noise and repeated sounds - a weird "echo" behavior.
As the comment just above says: "Ensuring these bits are 0 clears
playback static on some HD Audio codecs".  Which is definitely true at
least on my Core i5 Westmere system.

Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2011-05-27 19:45:28 -07:00
parent f23a5e1405
commit 46f2cc8051
1 changed files with 1 additions and 1 deletions
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2
sound/pci/hda/hda_intel.c
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@ -1085,7 +1085,7 @@ static void azx_init_pci(struct azx *chip)
* codecs.
* The PCI register TCSEL is defined in the Intel manuals.
*/
if (chip->driver_caps & AZX_DCAPS_NO_TCSEL) {
if (!(chip->driver_caps & AZX_DCAPS_NO_TCSEL)) {
snd_printdd(SFX "Clearing TCSEL\n");
update_pci_byte(chip->pci, ICH6_PCIREG_TCSEL, 0x07, 0);
}