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Commit a2142674 authored by Takashi Iwai's avatar Takashi Iwai Committed by Jaroslav Kysela
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[ALSA] Fix the detection of resolution of ac97 controls 



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

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 56f5ceed

sound/pci/ac97/ac97_codec.c

+2 −2
Original line number Diff line number Diff line
@@ -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;