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ALSA: bt87x: 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/20250829144342.4290-15-tiwai@suse.de
This commit is contained in:
Takashi Iwai 2025-08-29 16:42:49 +02:00
parent 290adc48a2
commit 637a399944
1 changed files with 10 additions and 16 deletions
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26
sound/pci/bt87x.c
View File

@ -431,10 +431,10 @@ static int snd_bt87x_close(struct snd_pcm_substream *substream)
{
struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
spin_lock_irq(&chip->reg_lock);
chip->reg_control |= CTL_A_PWRDN;
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
spin_unlock_irq(&chip->reg_lock);
scoped_guard(spinlock_irq, &chip->reg_lock) {
chip->reg_control |= CTL_A_PWRDN;
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
}
chip->substream = NULL;
clear_bit(0, &chip->opened);
@ -466,20 +466,19 @@ static int snd_bt87x_prepare(struct snd_pcm_substream *substream)
struct snd_pcm_runtime *runtime = substream->runtime;
int decimation;
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
chip->reg_control &= ~(CTL_DA_SDR_MASK | CTL_DA_SBR);
decimation = (ANALOG_CLOCK + runtime->rate / 4) / runtime->rate;
chip->reg_control |= decimation << CTL_DA_SDR_SHIFT;
if (runtime->format == SNDRV_PCM_FORMAT_S8)
chip->reg_control |= CTL_DA_SBR;
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
spin_unlock_irq(&chip->reg_lock);
return 0;
}
static int snd_bt87x_start(struct snd_bt87x *chip)
{
spin_lock(&chip->reg_lock);
guard(spinlock)(&chip->reg_lock);
chip->current_line = 0;
chip->reg_control |= CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN;
snd_bt87x_writel(chip, REG_RISC_STRT_ADD, chip->dma_risc.addr);
@ -487,18 +486,16 @@ static int snd_bt87x_start(struct snd_bt87x *chip)
chip->line_bytes | (chip->lines << 16));
snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
spin_unlock(&chip->reg_lock);
return 0;
}
static int snd_bt87x_stop(struct snd_bt87x *chip)
{
spin_lock(&chip->reg_lock);
guard(spinlock)(&chip->reg_lock);
chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
snd_bt87x_writel(chip, REG_INT_MASK, 0);
snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
spin_unlock(&chip->reg_lock);
return 0;
}
@ -560,13 +557,12 @@ static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
u32 old_control;
int changed;
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
old_control = chip->reg_control;
chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
| (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
changed = old_control != chip->reg_control;
spin_unlock_irq(&chip->reg_lock);
return changed;
}
@ -596,13 +592,12 @@ static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
u32 old_control;
int changed;
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
old_control = chip->reg_control;
chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
| (value->value.integer.value[0] ? CTL_A_G2X : 0);
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
changed = chip->reg_control != old_control;
spin_unlock_irq(&chip->reg_lock);
return changed;
}
@ -638,13 +633,12 @@ static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
u32 old_control;
int changed;
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
old_control = chip->reg_control;
chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
| (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
changed = chip->reg_control != old_control;
spin_unlock_irq(&chip->reg_lock);
return changed;
}