Gh0st
/
linux
mirror of https://github.com/torvalds/linux.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

ALSA: als4000: Use guard() for spin locks 

Clean up the code using guard() for spin locks.

Merely code refactoring, and no behavior change.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250829144342.4290-9-tiwai@suse.de
This commit is contained in:
Takashi Iwai 2025-08-29 16:42:43 +02:00
parent f28745ab9f
commit fe0f9c2e72
1 changed files with 32 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
sound/pci/als4000.c
View File

@ -369,14 +369,14 @@ static int snd_als4000_capture_prepare(struct snd_pcm_substream *substream)
count >>= 1;
count--;
spin_lock_irq(&chip->reg_lock);
snd_als4000_set_rate(chip, runtime->rate);
snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
spin_unlock_irq(&chip->reg_lock);
spin_lock_irq(&chip->mixer_lock);
snd_als4_cr_write(chip, ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO, count & 0xff);
snd_als4_cr_write(chip, ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI, count >> 8);
spin_unlock_irq(&chip->mixer_lock);
scoped_guard(spinlock_irq, &chip->reg_lock) {
snd_als4000_set_rate(chip, runtime->rate);
snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
}
scoped_guard(spinlock_irq, &chip->mixer_lock) {
snd_als4_cr_write(chip, ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO, count & 0xff);
snd_als4_cr_write(chip, ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI, count >> 8);
}
return 0;
}
@ -402,7 +402,7 @@ static int snd_als4000_playback_prepare(struct snd_pcm_substream *substream)
* reordering, ...). Something seems to get enabled on playback
* that I haven't found out how to disable again, which then causes
* the switching pops to reach the speakers the next time here. */
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
snd_als4000_set_rate(chip, runtime->rate);
snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
@ -413,7 +413,6 @@ static int snd_als4000_playback_prepare(struct snd_pcm_substream *substream)
snd_sbdsp_command(chip, count & 0xff);
snd_sbdsp_command(chip, count >> 8);
snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
spin_unlock_irq(&chip->reg_lock);
return 0;
}
@ -429,7 +428,7 @@ static int snd_als4000_capture_trigger(struct snd_pcm_substream *substream, int
Probably need to take reg_lock as outer (or inner??) lock, too.
(or serialize both lock operations? probably not, though... - racy?)
*/
spin_lock(&chip->mixer_lock);
guard(spinlock)(&chip->mixer_lock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
@ -447,7 +446,6 @@ static int snd_als4000_capture_trigger(struct snd_pcm_substream *substream, int
result = -EINVAL;
break;
}
spin_unlock(&chip->mixer_lock);
return result;
}
@ -456,7 +454,7 @@ static int snd_als4000_playback_trigger(struct snd_pcm_substream *substream, int
struct snd_sb *chip = snd_pcm_substream_chip(substream);
int result = 0;
spin_lock(&chip->reg_lock);
guard(spinlock)(&chip->reg_lock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
@ -472,7 +470,6 @@ static int snd_als4000_playback_trigger(struct snd_pcm_substream *substream, int
result = -EINVAL;
break;
}
spin_unlock(&chip->reg_lock);
return result;
}
@ -481,9 +478,9 @@ static snd_pcm_uframes_t snd_als4000_capture_pointer(struct snd_pcm_substream *s
struct snd_sb *chip = snd_pcm_substream_chip(substream);
unsigned int result;
spin_lock(&chip->reg_lock);
result = snd_als4k_gcr_read(chip, ALS4K_GCRA4_FIFO2_CURRENT_ADDR);
spin_unlock(&chip->reg_lock);
scoped_guard(spinlock, &chip->reg_lock) {
result = snd_als4k_gcr_read(chip, ALS4K_GCRA4_FIFO2_CURRENT_ADDR);
}
result &= 0xffff;
return bytes_to_frames( substream->runtime, result );
}
@ -493,9 +490,9 @@ static snd_pcm_uframes_t snd_als4000_playback_pointer(struct snd_pcm_substream *
struct snd_sb *chip = snd_pcm_substream_chip(substream);
unsigned result;
spin_lock(&chip->reg_lock);
result = snd_als4k_gcr_read(chip, ALS4K_GCRA0_FIFO1_CURRENT_ADDR);
spin_unlock(&chip->reg_lock);
scoped_guard(spinlock, &chip->reg_lock) {
result = snd_als4k_gcr_read(chip, ALS4K_GCRA0_FIFO1_CURRENT_ADDR);
}
result &= 0xffff;
return bytes_to_frames( substream->runtime, result );
}
@ -536,10 +533,10 @@ static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id)
snd_als4k_iobase_writeb(chip->alt_port,
ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU, pci_irqstatus);
spin_lock(&chip->mixer_lock);
/* SPECS_PAGE: 20 */
sb_irqstatus = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
spin_unlock(&chip->mixer_lock);
scoped_guard(spinlock, &chip->mixer_lock) {
/* SPECS_PAGE: 20 */
sb_irqstatus = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
}
if (sb_irqstatus & SB_IRQTYPE_8BIT)
snd_sb_ack_8bit(chip);
@ -709,18 +706,18 @@ static void snd_als4000_configure(struct snd_sb *chip)
int i;
/* do some more configuration */
spin_lock_irq(&chip->mixer_lock);
tmp = snd_als4_cr_read(chip, ALS4K_CR0_SB_CONFIG);
snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
tmp|ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
/* always select DMA channel 0, since we do not actually use DMA
* SPECS_PAGE: 19/20 */
snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
tmp & ~ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
spin_unlock_irq(&chip->mixer_lock);
scoped_guard(spinlock_irq, &chip->mixer_lock) {
tmp = snd_als4_cr_read(chip, ALS4K_CR0_SB_CONFIG);
snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
tmp|ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
/* always select DMA channel 0, since we do not actually use DMA
* SPECS_PAGE: 19/20 */
snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
tmp & ~ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
}
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
/* enable interrupts */
snd_als4k_gcr_write(chip, ALS4K_GCR8C_MISC_CTRL,
ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE);
@ -731,7 +728,6 @@ static void snd_als4000_configure(struct snd_sb *chip)
/* enable burst mode to prevent dropouts during high PCI bus usage */
snd_als4k_gcr_write(chip, ALS4K_GCR99_DMA_EMULATION_CTRL,
(snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL) & ~0x07) | 0x04);
spin_unlock_irq(&chip->reg_lock);
}
#ifdef SUPPORT_JOYSTICK