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[ALSA] Fix the detection of resolution of ac97 controls

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AC97 Codec
Fixed the detection of bit resolution of ac97 mixer controls.
This will fix the problem with TI ac97 codecs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2005-03-29 16:33:28 +02:00 committed by Jaroslav Kysela
parent 56f5ceed00
commit a2142674b9
1 changed files with 2 additions and 2 deletions
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4
sound/pci/ac97/ac97_codec.c
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@ -1072,9 +1072,9 @@ static void check_volume_resolution(ac97_t *ac97, int reg, unsigned char *lo_max
unsigned short val;
snd_ac97_write(ac97, reg, 0x8080 | cbit[i] | (cbit[i] << 8));
val = snd_ac97_read(ac97, reg);
if (! *lo_max && (val & cbit[i]))
if (! *lo_max && (val & 0x7f) == cbit[i])
*lo_max = max[i];
if (! *hi_max && (val & (cbit[i] << 8)))
if (! *hi_max && ((val >> 8) & 0x7f) == cbit[i])
*hi_max = max[i];
if (*lo_max && *hi_max)
break;