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ALSA: parisc: 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>
This commit is contained in:
Takashi Iwai 2025-09-10 13:09:21 +02:00
parent b10b93d193
commit f1998e16b2
1 changed files with 39 additions and 60 deletions
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99
sound/parisc/harmony.c
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@ -140,32 +140,25 @@ harmony_enable_interrupts(struct snd_harmony *h)
static void
harmony_mute(struct snd_harmony *h)
{
unsigned long flags;
spin_lock_irqsave(&h->mixer_lock, flags);
guard(spinlock_irqsave)(&h->mixer_lock);
harmony_wait_for_control(h);
harmony_write(h, HARMONY_GAINCTL, HARMONY_GAIN_SILENCE);
spin_unlock_irqrestore(&h->mixer_lock, flags);
}
static void
harmony_unmute(struct snd_harmony *h)
{
unsigned long flags;
spin_lock_irqsave(&h->mixer_lock, flags);
guard(spinlock_irqsave)(&h->mixer_lock);
harmony_wait_for_control(h);
harmony_write(h, HARMONY_GAINCTL, h->st.gain);
spin_unlock_irqrestore(&h->mixer_lock, flags);
}
static void
harmony_set_control(struct snd_harmony *h)
{
u32 ctrl;
unsigned long flags;
spin_lock_irqsave(&h->lock, flags);
guard(spinlock_irqsave)(&h->lock);
ctrl = (HARMONY_CNTL_C |
(h->st.format << 6) |
@ -174,8 +167,6 @@ harmony_set_control(struct snd_harmony *h)
harmony_wait_for_control(h);
harmony_write(h, HARMONY_CNTL, ctrl);
spin_unlock_irqrestore(&h->lock, flags);
}
static irqreturn_t
@ -184,53 +175,53 @@ snd_harmony_interrupt(int irq, void *dev)
u32 dstatus;
struct snd_harmony *h = dev;
spin_lock(&h->lock);
harmony_disable_interrupts(h);
harmony_wait_for_control(h);
dstatus = harmony_read(h, HARMONY_DSTATUS);
spin_unlock(&h->lock);
scoped_guard(spinlock, &h->lock) {
harmony_disable_interrupts(h);
harmony_wait_for_control(h);
dstatus = harmony_read(h, HARMONY_DSTATUS);
}
if (dstatus & HARMONY_DSTATUS_PN) {
if (h->psubs && h->st.playing) {
spin_lock(&h->lock);
h->pbuf.buf += h->pbuf.count; /* PAGE_SIZE */
h->pbuf.buf %= h->pbuf.size; /* MAX_BUFS*PAGE_SIZE */
scoped_guard(spinlock, &h->lock) {
h->pbuf.buf += h->pbuf.count; /* PAGE_SIZE */
h->pbuf.buf %= h->pbuf.size; /* MAX_BUFS*PAGE_SIZE */
harmony_write(h, HARMONY_PNXTADD,
h->pbuf.addr + h->pbuf.buf);
h->stats.play_intr++;
spin_unlock(&h->lock);
harmony_write(h, HARMONY_PNXTADD,
h->pbuf.addr + h->pbuf.buf);
h->stats.play_intr++;
}
snd_pcm_period_elapsed(h->psubs);
} else {
spin_lock(&h->lock);
harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
h->stats.silence_intr++;
spin_unlock(&h->lock);
scoped_guard(spinlock, &h->lock) {
harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
h->stats.silence_intr++;
}
}
}
if (dstatus & HARMONY_DSTATUS_RN) {
if (h->csubs && h->st.capturing) {
spin_lock(&h->lock);
h->cbuf.buf += h->cbuf.count;
h->cbuf.buf %= h->cbuf.size;
scoped_guard(spinlock, &h->lock) {
h->cbuf.buf += h->cbuf.count;
h->cbuf.buf %= h->cbuf.size;
harmony_write(h, HARMONY_RNXTADD,
h->cbuf.addr + h->cbuf.buf);
h->stats.rec_intr++;
spin_unlock(&h->lock);
harmony_write(h, HARMONY_RNXTADD,
h->cbuf.addr + h->cbuf.buf);
h->stats.rec_intr++;
}
snd_pcm_period_elapsed(h->csubs);
} else {
spin_lock(&h->lock);
harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
h->stats.graveyard_intr++;
spin_unlock(&h->lock);
scoped_guard(spinlock, &h->lock) {
harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
h->stats.graveyard_intr++;
}
}
}
spin_lock(&h->lock);
harmony_enable_interrupts(h);
spin_unlock(&h->lock);
scoped_guard(spinlock, &h->lock) {
harmony_enable_interrupts(h);
}
return IRQ_HANDLED;
}
@ -297,7 +288,7 @@ snd_harmony_playback_trigger(struct snd_pcm_substream *ss, int cmd)
if (h->st.capturing)
return -EBUSY;
spin_lock(&h->lock);
guard(spinlock)(&h->lock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
h->st.playing = 1;
@ -316,11 +307,9 @@ snd_harmony_playback_trigger(struct snd_pcm_substream *ss, int cmd)
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_SUSPEND:
default:
spin_unlock(&h->lock);
snd_BUG();
return -EINVAL;
}
spin_unlock(&h->lock);
return 0;
}
@ -333,7 +322,7 @@ snd_harmony_capture_trigger(struct snd_pcm_substream *ss, int cmd)
if (h->st.playing)
return -EBUSY;
spin_lock(&h->lock);
guard(spinlock)(&h->lock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
h->st.capturing = 1;
@ -352,11 +341,9 @@ snd_harmony_capture_trigger(struct snd_pcm_substream *ss, int cmd)
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_SUSPEND:
default:
spin_unlock(&h->lock);
snd_BUG();
return -EINVAL;
}
spin_unlock(&h->lock);
return 0;
}
@ -674,7 +661,7 @@ snd_harmony_volume_get(struct snd_kcontrol *kc,
int invert = (kc->private_value >> 24) & 0xff;
int left, right;
spin_lock_irq(&h->mixer_lock);
guard(spinlock_irq)(&h->mixer_lock);
left = (h->st.gain >> shift_left) & mask;
right = (h->st.gain >> shift_right) & mask;
@ -687,8 +674,6 @@ snd_harmony_volume_get(struct snd_kcontrol *kc,
if (shift_left != shift_right)
ucontrol->value.integer.value[1] = right;
spin_unlock_irq(&h->mixer_lock);
return 0;
}
@ -704,7 +689,7 @@ snd_harmony_volume_put(struct snd_kcontrol *kc,
int left, right;
int old_gain = h->st.gain;
spin_lock_irq(&h->mixer_lock);
guard(spinlock_irq)(&h->mixer_lock);
left = ucontrol->value.integer.value[0] & mask;
if (invert)
@ -722,8 +707,6 @@ snd_harmony_volume_put(struct snd_kcontrol *kc,
snd_harmony_set_new_gain(h);
spin_unlock_irq(&h->mixer_lock);
return h->st.gain != old_gain;
}
@ -743,13 +726,11 @@ snd_harmony_captureroute_get(struct snd_kcontrol *kc,
struct snd_harmony *h = snd_kcontrol_chip(kc);
int value;
spin_lock_irq(&h->mixer_lock);
guard(spinlock_irq)(&h->mixer_lock);
value = (h->st.gain >> HARMONY_GAIN_IS_SHIFT) & 1;
ucontrol->value.enumerated.item[0] = value;
spin_unlock_irq(&h->mixer_lock);
return 0;
}
@ -761,7 +742,7 @@ snd_harmony_captureroute_put(struct snd_kcontrol *kc,
int value;
int old_gain = h->st.gain;
spin_lock_irq(&h->mixer_lock);
guard(spinlock_irq)(&h->mixer_lock);
value = ucontrol->value.enumerated.item[0] & 1;
h->st.gain &= ~HARMONY_GAIN_IS_MASK;
@ -769,8 +750,6 @@ snd_harmony_captureroute_put(struct snd_kcontrol *kc,
snd_harmony_set_new_gain(h);
spin_unlock_irq(&h->mixer_lock);
return h->st.gain != old_gain;
}