diff options
| author | Krzysztof Helt <krzysztof.h1@wp.pl> | 2009-12-09 20:12:43 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-12-10 11:39:48 +0100 |
| commit | 5f60e496083efb01893a899b6885828330db971f (patch) | |
| tree | ea21538d0b263f494e2cb1e51cd3333cf30db286 | |
| parent | 84194883bcf89383ea4230116bb0195af5ec5829 (diff) | |
| download | linux-5f60e496083efb01893a899b6885828330db971f.tar.bz2 | |
ALSA: opti93x: fix irq releasing if the irq cannot be allocated
Use the chip->irq to check if the irq should be released so the irq is not released
if it has not been allocated.
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/isa/opti9xx/opti92x-ad1848.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/sound/isa/opti9xx/opti92x-ad1848.c b/sound/isa/opti9xx/opti92x-ad1848.c index 8c88401c79bc..d8eac3f28947 100644 --- a/sound/isa/opti9xx/opti92x-ad1848.c +++ b/sound/isa/opti9xx/opti92x-ad1848.c @@ -548,10 +548,13 @@ __skip_mpu: static irqreturn_t snd_opti93x_interrupt(int irq, void *dev_id) { - struct snd_wss *codec = dev_id; - struct snd_opti9xx *chip = codec->card->private_data; + struct snd_opti9xx *chip = dev_id; + struct snd_wss *codec = chip->codec; unsigned char status; + if (!codec) + return IRQ_HANDLED; + status = snd_opti9xx_read(chip, OPTi9XX_MC_REG(11)); if ((status & OPTi93X_IRQ_PLAYBACK) && codec->playback_substream) snd_pcm_period_elapsed(codec->playback_substream); @@ -691,10 +694,9 @@ static void snd_card_opti9xx_free(struct snd_card *card) if (chip) { #ifdef OPTi93X - struct snd_wss *codec = chip->codec; - if (codec && codec->irq > 0) { - disable_irq(codec->irq); - free_irq(codec->irq, codec); + if (chip->irq > 0) { + disable_irq(chip->irq); + free_irq(chip->irq, chip); } release_and_free_resource(chip->res_mc_indir); #endif @@ -759,9 +761,9 @@ static int __devinit snd_opti9xx_probe(struct snd_card *card) #endif #ifdef OPTi93X error = request_irq(irq, snd_opti93x_interrupt, - IRQF_DISABLED, DEV_NAME" - WSS", codec); + IRQF_DISABLED, DEV_NAME" - WSS", chip); if (error < 0) { - snd_printk(KERN_ERR "opti9xx: can't grab IRQ %d\n", chip->irq); + snd_printk(KERN_ERR "opti9xx: can't grab IRQ %d\n", irq); return error; } #endif |