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| author | Danny Tholen <obiwan@mailmij.org> | 2007-09-11 21:41:56 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2007-10-16 16:50:20 +0200 |
| commit | e8a7f136f5edb6ae83b14faaa0da2a3c4558f431 (patch) | |
| tree | bb8d5c873e8c993f8c97aad06e73c45e217b5d6b /sound/pci/hda/hda_intel.c | |
| parent | 768d8c7df886fc5cc9d6057cc987ef8e52d197b5 (diff) | |
| download | lwn-e8a7f136f5edb6ae83b14faaa0da2a3c4558f431.tar.gz lwn-e8a7f136f5edb6ae83b14faaa0da2a3c4558f431.zip | |
[ALSA] hda-intel - Improve HD-audio codec probing robustness
When modem is disabled in the BIOS, detection of the number of codecs
always fails after booting if STATESTS is not cleared first.
This patch fixes this problem and also adds an error check in a place
where a read error would lead to a very large number of pointless loops.
Signed-off-by: Danny Tholen <obiwan@mailmij.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/pci/hda/hda_intel.c')
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 72fd34538994..68dc9a2e3cf8 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -687,6 +687,9 @@ static int azx_reset(struct azx *chip) { int count; + /* clear STATESTS */ + azx_writeb(chip, STATESTS, STATESTS_INT_MASK); + /* reset controller */ azx_writel(chip, GCTL, azx_readl(chip, GCTL) & ~ICH6_GCTL_RESET); |