diff options
author | Takashi Iwai <tiwai@suse.de> | 2014-09-10 16:58:59 +0400 |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2014-09-15 17:52:38 +0400 |
commit | 3b73cfe5598eda7f5540608acd63b86688242731 (patch) | |
tree | 2f405e7c5eefdf3c17e069905548237ceca2155b /sound/pcmcia/pdaudiocf | |
parent | 6336c20cdaee1dd13d01dfa8c07ce3b18bbc846f (diff) | |
download | linux-3b73cfe5598eda7f5540608acd63b86688242731.tar.xz |
ALSA: pdaudiocf: Use nonatomic PCM ops
Like other fixes, convert the tasklet to a threaded irq and replace
spinlock with mutex appropriately. ak4117_lock remains as spinlock
since it's called in another spinlock context from ak4117 driver.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pcmcia/pdaudiocf')
-rw-r--r-- | sound/pcmcia/pdaudiocf/pdaudiocf.c | 13 | ||||
-rw-r--r-- | sound/pcmcia/pdaudiocf/pdaudiocf.h | 5 | ||||
-rw-r--r-- | sound/pcmcia/pdaudiocf/pdaudiocf_core.c | 8 | ||||
-rw-r--r-- | sound/pcmcia/pdaudiocf/pdaudiocf_irq.c | 23 | ||||
-rw-r--r-- | sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c | 5 |
5 files changed, 29 insertions, 25 deletions
diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf.c b/sound/pcmcia/pdaudiocf/pdaudiocf.c index 56bda124cd4a..07f4b33db3af 100644 --- a/sound/pcmcia/pdaudiocf/pdaudiocf.c +++ b/sound/pcmcia/pdaudiocf/pdaudiocf.c @@ -61,6 +61,7 @@ static void snd_pdacf_detach(struct pcmcia_device *p_dev); static void pdacf_release(struct pcmcia_device *link) { + free_irq(link->irq, link->priv); pcmcia_disable_device(link); } @@ -220,11 +221,13 @@ static int pdacf_config(struct pcmcia_device *link) ret = pcmcia_request_io(link); if (ret) - goto failed; + goto failed_preirq; - ret = pcmcia_request_irq(link, pdacf_interrupt); + ret = request_threaded_irq(link->irq, pdacf_interrupt, + pdacf_threaded_irq, + IRQF_SHARED, link->devname, link->priv); if (ret) - goto failed; + goto failed_preirq; ret = pcmcia_enable_device(link); if (ret) @@ -236,7 +239,9 @@ static int pdacf_config(struct pcmcia_device *link) return 0; -failed: + failed: + free_irq(link->irq, link->priv); +failed_preirq: pcmcia_disable_device(link); return -ENODEV; } diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf.h b/sound/pcmcia/pdaudiocf/pdaudiocf.h index ea41e57d7179..e9a7d3a784f7 100644 --- a/sound/pcmcia/pdaudiocf/pdaudiocf.h +++ b/sound/pcmcia/pdaudiocf/pdaudiocf.h @@ -88,10 +88,9 @@ struct snd_pdacf { unsigned long port; int irq; - spinlock_t reg_lock; + struct mutex reg_lock; unsigned short regmap[8]; unsigned short suspend_reg_scr; - struct tasklet_struct tq; spinlock_t ak4117_lock; struct ak4117 *ak4117; @@ -136,7 +135,7 @@ int snd_pdacf_resume(struct snd_pdacf *chip); #endif int snd_pdacf_pcm_new(struct snd_pdacf *chip); irqreturn_t pdacf_interrupt(int irq, void *dev); -void pdacf_tasklet(unsigned long private_data); +irqreturn_t pdacf_threaded_irq(int irq, void *dev); void pdacf_reinit(struct snd_pdacf *chip, int resume); #endif /* __PDAUDIOCF_H */ diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf_core.c b/sound/pcmcia/pdaudiocf/pdaudiocf_core.c index ea0adfb984ad..d724ab0653cf 100644 --- a/sound/pcmcia/pdaudiocf/pdaudiocf_core.c +++ b/sound/pcmcia/pdaudiocf/pdaudiocf_core.c @@ -162,9 +162,8 @@ struct snd_pdacf *snd_pdacf_create(struct snd_card *card) if (chip == NULL) return NULL; chip->card = card; - spin_lock_init(&chip->reg_lock); + mutex_init(&chip->reg_lock); spin_lock_init(&chip->ak4117_lock); - tasklet_init(&chip->tq, pdacf_tasklet, (unsigned long)chip); card->private_data = chip; pdacf_proc_init(chip); @@ -174,19 +173,18 @@ struct snd_pdacf *snd_pdacf_create(struct snd_card *card) static void snd_pdacf_ak4117_change(struct ak4117 *ak4117, unsigned char c0, unsigned char c1) { struct snd_pdacf *chip = ak4117->change_callback_private; - unsigned long flags; u16 val; if (!(c0 & AK4117_UNLCK)) return; - spin_lock_irqsave(&chip->reg_lock, flags); + mutex_lock(&chip->reg_lock); val = chip->regmap[PDAUDIOCF_REG_SCR>>1]; if (ak4117->rcs0 & AK4117_UNLCK) val |= PDAUDIOCF_BLUE_LED_OFF; else val &= ~PDAUDIOCF_BLUE_LED_OFF; pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val); - spin_unlock_irqrestore(&chip->reg_lock, flags); + mutex_unlock(&chip->reg_lock); } int snd_pdacf_ak4117_create(struct snd_pdacf *chip) diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf_irq.c b/sound/pcmcia/pdaudiocf/pdaudiocf_irq.c index dcd32201bc8c..ecf0fbd91794 100644 --- a/sound/pcmcia/pdaudiocf/pdaudiocf_irq.c +++ b/sound/pcmcia/pdaudiocf/pdaudiocf_irq.c @@ -30,6 +30,7 @@ irqreturn_t pdacf_interrupt(int irq, void *dev) { struct snd_pdacf *chip = dev; unsigned short stat; + bool wake_thread = false; if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE| PDAUDIOCF_STAT_IS_CONFIGURED| @@ -41,13 +42,13 @@ irqreturn_t pdacf_interrupt(int irq, void *dev) if (stat & PDAUDIOCF_IRQOVR) /* should never happen */ snd_printk(KERN_ERR "PDAUDIOCF SRAM buffer overrun detected!\n"); if (chip->pcm_substream) - tasklet_schedule(&chip->tq); + wake_thread = true; if (!(stat & PDAUDIOCF_IRQAKM)) stat |= PDAUDIOCF_IRQAKM; /* check rate */ } if (get_irq_regs() != NULL) snd_ak4117_check_rate_and_errors(chip->ak4117, 0); - return IRQ_HANDLED; + return wake_thread ? IRQ_WAKE_THREAD : IRQ_HANDLED; } static inline void pdacf_transfer_mono16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port) @@ -256,16 +257,16 @@ static void pdacf_transfer(struct snd_pdacf *chip, unsigned int size, unsigned i } } -void pdacf_tasklet(unsigned long private_data) +irqreturn_t pdacf_threaded_irq(int irq, void *dev) { - struct snd_pdacf *chip = (struct snd_pdacf *) private_data; + struct snd_pdacf *chip = dev; int size, off, cont, rdp, wdp; if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE|PDAUDIOCF_STAT_IS_CONFIGURED)) != PDAUDIOCF_STAT_IS_CONFIGURED) - return; + return IRQ_HANDLED; if (chip->pcm_substream == NULL || chip->pcm_substream->runtime == NULL || !snd_pcm_running(chip->pcm_substream)) - return; + return IRQ_HANDLED; rdp = inw(chip->port + PDAUDIOCF_REG_RDP); wdp = inw(chip->port + PDAUDIOCF_REG_WDP); @@ -311,15 +312,15 @@ void pdacf_tasklet(unsigned long private_data) size -= cont; } #endif - spin_lock(&chip->reg_lock); + mutex_lock(&chip->reg_lock); while (chip->pcm_tdone >= chip->pcm_period) { chip->pcm_hwptr += chip->pcm_period; chip->pcm_hwptr %= chip->pcm_size; chip->pcm_tdone -= chip->pcm_period; - spin_unlock(&chip->reg_lock); + mutex_unlock(&chip->reg_lock); snd_pcm_period_elapsed(chip->pcm_substream); - spin_lock(&chip->reg_lock); + mutex_lock(&chip->reg_lock); } - spin_unlock(&chip->reg_lock); - /* printk(KERN_DEBUG "TASKLET: end\n"); */ + mutex_unlock(&chip->reg_lock); + return IRQ_HANDLED; } diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c b/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c index 43f995a3f960..b48aa0a78c19 100644 --- a/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c +++ b/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c @@ -77,7 +77,7 @@ static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd) default: return -EINVAL; } - spin_lock(&chip->reg_lock); + mutex_lock(&chip->reg_lock); chip->pcm_running += inc; tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); if (chip->pcm_running) { @@ -91,7 +91,7 @@ static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd) tmp |= val; pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp); __end: - spin_unlock(&chip->reg_lock); + mutex_unlock(&chip->reg_lock); snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE); return ret; } @@ -296,6 +296,7 @@ int snd_pdacf_pcm_new(struct snd_pdacf *chip) pcm->private_data = chip; pcm->info_flags = 0; + pcm->nonatomic = true; strcpy(pcm->name, chip->card->shortname); chip->pcm = pcm; |