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| author | Takashi Iwai <tiwai@suse.de> | 2009-02-23 16:57:04 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-02-23 16:57:04 +0100 |
| commit | a65d629ceb4cff5e7d5edadfd6bf1f64c370a517 (patch) | |
| tree | afe9fc6ca83c7e2261ec3032eca34739376514cf /sound/pci/hda/hda_hwdep.c | |
| parent | 209b14033652f0509912da97fb4a5c8001e64ec0 (diff) | |
| download | linux-a65d629ceb4cff5e7d5edadfd6bf1f64c370a517.tar.gz linux-a65d629ceb4cff5e7d5edadfd6bf1f64c370a517.tar.bz2 linux-a65d629ceb4cff5e7d5edadfd6bf1f64c370a517.zip | |
ALSA: hda - Add pseudo device-locking for clear/reconfig
Added the pseudo device-locking using card->shutdown flag to avoid
the crash via clear/reconfig during operations.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_hwdep.c')
| -rw-r--r-- | sound/pci/hda/hda_hwdep.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c index c660383ef381..4af484b8240c 100644 --- a/sound/pci/hda/hda_hwdep.c +++ b/sound/pci/hda/hda_hwdep.c @@ -155,7 +155,13 @@ int /*__devinit*/ snd_hda_create_hwdep(struct hda_codec *codec) static int clear_codec(struct hda_codec *codec) { - snd_hda_codec_reset(codec); + int err; + + err = snd_hda_codec_reset(codec); + if (err < 0) { + snd_printk(KERN_ERR "The codec is being used, can't free.\n"); + return err; + } clear_hwdep_elements(codec); return 0; } @@ -165,7 +171,12 @@ static int reconfig_codec(struct hda_codec *codec) int err; snd_printk(KERN_INFO "hda-codec: reconfiguring\n"); - snd_hda_codec_reset(codec); + err = snd_hda_codec_reset(codec); + if (err < 0) { + snd_printk(KERN_ERR + "The codec is being used, can't reconfigure.\n"); + return err; + } err = snd_hda_codec_configure(codec); if (err < 0) return err; |