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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>
This commit is contained in:
Krzysztof Helt 2009-12-09 20:12:43 +01:00 committed by Takashi Iwai
parent 84194883bc
commit 5f60e49608
1 changed files with 10 additions and 8 deletions
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18
sound/isa/opti9xx/opti92x-ad1848.c
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@ -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