admin/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-12-07 20:06:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

ALSA: oxygen: Use guard() for spin locks

Browse Source 
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/20250829144342.4290-48-tiwai@suse.de
This commit is contained in:
Takashi Iwai
2025-08-29 16:43:22 +02:00
parent 8ecafe5dac
commit 4751026c79
6 changed files with 139 additions and 152 deletions
Download Patch File Download Diff File Expand all files Collapse all files

132
sound/pci/oxygen/oxygen_lib.c
View File

@@ -59,36 +59,34 @@ static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
if (!status)
return IRQ_NONE;
spin_lock(&chip->reg_lock);
scoped_guard(spinlock, &chip->reg_lock) {
clear = status & (OXYGEN_CHANNEL_A |
OXYGEN_CHANNEL_B |
OXYGEN_CHANNEL_C |
OXYGEN_CHANNEL_SPDIF |
OXYGEN_CHANNEL_MULTICH |
OXYGEN_CHANNEL_AC97 |
OXYGEN_INT_SPDIF_IN_DETECT |
OXYGEN_INT_GPIO |
OXYGEN_INT_AC97);
if (clear) {
if (clear & OXYGEN_INT_SPDIF_IN_DETECT)
chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_DETECT;
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
chip->interrupt_mask & ~clear);
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
chip->interrupt_mask);
}
clear = status & (OXYGEN_CHANNEL_A |
OXYGEN_CHANNEL_B |
OXYGEN_CHANNEL_C |
OXYGEN_CHANNEL_SPDIF |
OXYGEN_CHANNEL_MULTICH |
OXYGEN_CHANNEL_AC97 |
OXYGEN_INT_SPDIF_IN_DETECT |
OXYGEN_INT_GPIO |
OXYGEN_INT_AC97);
if (clear) {
if (clear & OXYGEN_INT_SPDIF_IN_DETECT)
chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_DETECT;
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
chip->interrupt_mask & ~clear);
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
chip->interrupt_mask);
elapsed_streams = status & chip->pcm_running;
}
elapsed_streams = status & chip->pcm_running;
spin_unlock(&chip->reg_lock);
for (i = 0; i < PCM_COUNT; ++i)
if ((elapsed_streams & (1 << i)) && chip->streams[i])
snd_pcm_period_elapsed(chip->streams[i]);
if (status & OXYGEN_INT_SPDIF_IN_DETECT) {
spin_lock(&chip->reg_lock);
guard(spinlock)(&chip->reg_lock);
i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
if (i & (OXYGEN_SPDIF_SENSE_INT | OXYGEN_SPDIF_LOCK_INT |
OXYGEN_SPDIF_RATE_INT)) {
@@ -96,7 +94,6 @@ static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
schedule_work(&chip->spdif_input_bits_work);
}
spin_unlock(&chip->reg_lock);
}
if (status & OXYGEN_INT_GPIO)
@@ -127,45 +124,45 @@ static void oxygen_spdif_input_bits_changed(struct work_struct *work)
* changes.
*/
msleep(1);
spin_lock_irq(&chip->reg_lock);
reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
OXYGEN_SPDIF_LOCK_STATUS))
== OXYGEN_SPDIF_SENSE_STATUS) {
/*
* If we detect activity on the SPDIF input but cannot lock to
* a signal, the clock bit is likely to be wrong.
*/
reg ^= OXYGEN_SPDIF_IN_CLOCK_MASK;
oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
spin_unlock_irq(&chip->reg_lock);
msleep(1);
spin_lock_irq(&chip->reg_lock);
scoped_guard(spinlock_irq, &chip->reg_lock) {
reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
OXYGEN_SPDIF_LOCK_STATUS))
== OXYGEN_SPDIF_SENSE_STATUS) {
/* nothing detected with either clock; give up */
if ((reg & OXYGEN_SPDIF_IN_CLOCK_MASK)
== OXYGEN_SPDIF_IN_CLOCK_192) {
/*
* Reset clock to <= 96 kHz because this is
* more likely to be received next time.
*/
reg &= ~OXYGEN_SPDIF_IN_CLOCK_MASK;
reg |= OXYGEN_SPDIF_IN_CLOCK_96;
oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
/*
* If we detect activity on the SPDIF input but cannot lock to
* a signal, the clock bit is likely to be wrong.
*/
reg ^= OXYGEN_SPDIF_IN_CLOCK_MASK;
oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
spin_unlock_irq(&chip->reg_lock);
msleep(1);
spin_lock_irq(&chip->reg_lock);
reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
OXYGEN_SPDIF_LOCK_STATUS))
== OXYGEN_SPDIF_SENSE_STATUS) {
/* nothing detected with either clock; give up */
if ((reg & OXYGEN_SPDIF_IN_CLOCK_MASK)
== OXYGEN_SPDIF_IN_CLOCK_192) {
/*
* Reset clock to <= 96 kHz because this is
* more likely to be received next time.
*/
reg &= ~OXYGEN_SPDIF_IN_CLOCK_MASK;
reg |= OXYGEN_SPDIF_IN_CLOCK_96;
oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
}
}
}
}
spin_unlock_irq(&chip->reg_lock);
if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) {
spin_lock_irq(&chip->reg_lock);
chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
chip->interrupt_mask);
spin_unlock_irq(&chip->reg_lock);
scoped_guard(spinlock_irq, &chip->reg_lock) {
chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
chip->interrupt_mask);
}
/*
* We don't actually know that any channel status bits have
@@ -557,12 +554,11 @@ static void oxygen_init(struct oxygen *chip)
static void oxygen_shutdown(struct oxygen *chip)
{
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
chip->interrupt_mask = 0;
chip->pcm_running = 0;
oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
spin_unlock_irq(&chip->reg_lock);
}
static void oxygen_card_free(struct snd_card *card)
@@ -686,13 +682,13 @@ static int __oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
oxygen_proc_init(chip);
spin_lock_irq(&chip->reg_lock);
if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
if (chip->has_ac97_0 | chip->has_ac97_1)
chip->interrupt_mask |= OXYGEN_INT_AC97;
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
spin_unlock_irq(&chip->reg_lock);
scoped_guard(spinlock_irq, &chip->reg_lock) {
if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
if (chip->has_ac97_0 | chip->has_ac97_1)
chip->interrupt_mask |= OXYGEN_INT_AC97;
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
}
err = snd_card_register(card);
if (err < 0)
@@ -724,12 +720,12 @@ static int oxygen_pci_suspend(struct device *dev)
if (chip->model.suspend)
chip->model.suspend(chip);
spin_lock_irq(&chip->reg_lock);
saved_interrupt_mask = chip->interrupt_mask;
chip->interrupt_mask = 0;
oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
spin_unlock_irq(&chip->reg_lock);
scoped_guard(spinlock_irq, &chip->reg_lock) {
saved_interrupt_mask = chip->interrupt_mask;
chip->interrupt_mask = 0;
oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
}
flush_work(&chip->spdif_input_bits_work);
flush_work(&chip->gpio_work);

6
sound/pci/oxygen/oxygen_mixer.c
View File

@@ -432,7 +432,7 @@ static int spdif_bit_switch_put(struct snd_kcontrol *ctl,
u32 oldreg, newreg;
int changed;
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
oldreg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
if (value->value.integer.value[0])
newreg = oldreg | bit;
@@ -441,7 +441,6 @@ static int spdif_bit_switch_put(struct snd_kcontrol *ctl,
changed = newreg != oldreg;
if (changed)
oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, newreg);
spin_unlock_irq(&chip->reg_lock);
return changed;
}
@@ -476,7 +475,7 @@ static int monitor_put(struct snd_kcontrol *ctl,
u8 oldreg, newreg;
int changed;
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
oldreg = oxygen_read8(chip, OXYGEN_ADC_MONITOR);
if ((!!value->value.integer.value[0] ^ !!invert) != 0)
newreg = oldreg | bit;
@@ -485,7 +484,6 @@ static int monitor_put(struct snd_kcontrol *ctl,
changed = newreg != oldreg;
if (changed)
oxygen_write8(chip, OXYGEN_ADC_MONITOR, newreg);
spin_unlock_irq(&chip->reg_lock);
return changed;
}

144
sound/pci/oxygen/oxygen_pcm.c
View File

@@ -349,20 +349,20 @@ static int oxygen_rec_a_hw_params(struct snd_pcm_substream *substream,
if (err < 0)
return err;
spin_lock_irq(&chip->reg_lock);
oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
oxygen_format(hw_params) << OXYGEN_REC_FORMAT_A_SHIFT,
OXYGEN_REC_FORMAT_A_MASK);
oxygen_write16_masked(chip, OXYGEN_I2S_A_FORMAT,
oxygen_rate(hw_params) |
chip->model.adc_i2s_format |
get_mclk(chip, PCM_A, hw_params) |
oxygen_i2s_bits(hw_params),
OXYGEN_I2S_RATE_MASK |
OXYGEN_I2S_FORMAT_MASK |
OXYGEN_I2S_MCLK_MASK |
OXYGEN_I2S_BITS_MASK);
spin_unlock_irq(&chip->reg_lock);
scoped_guard(spinlock_irq, &chip->reg_lock) {
oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
oxygen_format(hw_params) << OXYGEN_REC_FORMAT_A_SHIFT,
OXYGEN_REC_FORMAT_A_MASK);
oxygen_write16_masked(chip, OXYGEN_I2S_A_FORMAT,
oxygen_rate(hw_params) |
chip->model.adc_i2s_format |
get_mclk(chip, PCM_A, hw_params) |
oxygen_i2s_bits(hw_params),
OXYGEN_I2S_RATE_MASK |
OXYGEN_I2S_FORMAT_MASK |
OXYGEN_I2S_MCLK_MASK |
OXYGEN_I2S_BITS_MASK);
}
guard(mutex)(&chip->mutex);
chip->model.set_adc_params(chip, hw_params);
@@ -383,21 +383,21 @@ static int oxygen_rec_b_hw_params(struct snd_pcm_substream *substream,
is_ac97 = chip->has_ac97_1 &&
(chip->model.device_config & CAPTURE_2_FROM_AC97_1);
spin_lock_irq(&chip->reg_lock);
oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
oxygen_format(hw_params) << OXYGEN_REC_FORMAT_B_SHIFT,
OXYGEN_REC_FORMAT_B_MASK);
if (!is_ac97)
oxygen_write16_masked(chip, OXYGEN_I2S_B_FORMAT,
oxygen_rate(hw_params) |
chip->model.adc_i2s_format |
get_mclk(chip, PCM_B, hw_params) |
oxygen_i2s_bits(hw_params),
OXYGEN_I2S_RATE_MASK |
OXYGEN_I2S_FORMAT_MASK |
OXYGEN_I2S_MCLK_MASK |
OXYGEN_I2S_BITS_MASK);
spin_unlock_irq(&chip->reg_lock);
scoped_guard(spinlock_irq, &chip->reg_lock) {
oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
oxygen_format(hw_params) << OXYGEN_REC_FORMAT_B_SHIFT,
OXYGEN_REC_FORMAT_B_MASK);
if (!is_ac97)
oxygen_write16_masked(chip, OXYGEN_I2S_B_FORMAT,
oxygen_rate(hw_params) |
chip->model.adc_i2s_format |
get_mclk(chip, PCM_B, hw_params) |
oxygen_i2s_bits(hw_params),
OXYGEN_I2S_RATE_MASK |
OXYGEN_I2S_FORMAT_MASK |
OXYGEN_I2S_MCLK_MASK |
OXYGEN_I2S_BITS_MASK);
}
if (!is_ac97) {
guard(mutex)(&chip->mutex);
@@ -419,21 +419,21 @@ static int oxygen_rec_c_hw_params(struct snd_pcm_substream *substream,
is_spdif = chip->model.device_config & CAPTURE_1_FROM_SPDIF;
spin_lock_irq(&chip->reg_lock);
oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
oxygen_format(hw_params) << OXYGEN_REC_FORMAT_C_SHIFT,
OXYGEN_REC_FORMAT_C_MASK);
if (!is_spdif)
oxygen_write16_masked(chip, OXYGEN_I2S_C_FORMAT,
oxygen_rate(hw_params) |
chip->model.adc_i2s_format |
get_mclk(chip, PCM_B, hw_params) |
oxygen_i2s_bits(hw_params),
OXYGEN_I2S_RATE_MASK |
OXYGEN_I2S_FORMAT_MASK |
OXYGEN_I2S_MCLK_MASK |
OXYGEN_I2S_BITS_MASK);
spin_unlock_irq(&chip->reg_lock);
scoped_guard(spinlock_irq, &chip->reg_lock) {
oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
oxygen_format(hw_params) << OXYGEN_REC_FORMAT_C_SHIFT,
OXYGEN_REC_FORMAT_C_MASK);
if (!is_spdif)
oxygen_write16_masked(chip, OXYGEN_I2S_C_FORMAT,
oxygen_rate(hw_params) |
chip->model.adc_i2s_format |
get_mclk(chip, PCM_B, hw_params) |
oxygen_i2s_bits(hw_params),
OXYGEN_I2S_RATE_MASK |
OXYGEN_I2S_FORMAT_MASK |
OXYGEN_I2S_MCLK_MASK |
OXYGEN_I2S_BITS_MASK);
}
if (!is_spdif) {
guard(mutex)(&chip->mutex);
@@ -453,7 +453,7 @@ static int oxygen_spdif_hw_params(struct snd_pcm_substream *substream,
return err;
guard(mutex)(&chip->mutex);
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
OXYGEN_SPDIF_OUT_ENABLE);
oxygen_write8_masked(chip, OXYGEN_PLAY_FORMAT,
@@ -463,7 +463,6 @@ static int oxygen_spdif_hw_params(struct snd_pcm_substream *substream,
oxygen_rate(hw_params) << OXYGEN_SPDIF_OUT_RATE_SHIFT,
OXYGEN_SPDIF_OUT_RATE_MASK);
oxygen_update_spdif_source(chip);
spin_unlock_irq(&chip->reg_lock);
return 0;
}
@@ -478,24 +477,24 @@ static int oxygen_multich_hw_params(struct snd_pcm_substream *substream,
return err;
guard(mutex)(&chip->mutex);
spin_lock_irq(&chip->reg_lock);
oxygen_write8_masked(chip, OXYGEN_PLAY_CHANNELS,
oxygen_play_channels(hw_params),
OXYGEN_PLAY_CHANNELS_MASK);
oxygen_write8_masked(chip, OXYGEN_PLAY_FORMAT,
oxygen_format(hw_params) << OXYGEN_MULTICH_FORMAT_SHIFT,
OXYGEN_MULTICH_FORMAT_MASK);
oxygen_write16_masked(chip, OXYGEN_I2S_MULTICH_FORMAT,
oxygen_rate(hw_params) |
chip->model.dac_i2s_format |
get_mclk(chip, PCM_MULTICH, hw_params) |
oxygen_i2s_bits(hw_params),
OXYGEN_I2S_RATE_MASK |
OXYGEN_I2S_FORMAT_MASK |
OXYGEN_I2S_MCLK_MASK |
OXYGEN_I2S_BITS_MASK);
oxygen_update_spdif_source(chip);
spin_unlock_irq(&chip->reg_lock);
scoped_guard(spinlock_irq, &chip->reg_lock) {
oxygen_write8_masked(chip, OXYGEN_PLAY_CHANNELS,
oxygen_play_channels(hw_params),
OXYGEN_PLAY_CHANNELS_MASK);
oxygen_write8_masked(chip, OXYGEN_PLAY_FORMAT,
oxygen_format(hw_params) << OXYGEN_MULTICH_FORMAT_SHIFT,
OXYGEN_MULTICH_FORMAT_MASK);
oxygen_write16_masked(chip, OXYGEN_I2S_MULTICH_FORMAT,
oxygen_rate(hw_params) |
chip->model.dac_i2s_format |
get_mclk(chip, PCM_MULTICH, hw_params) |
oxygen_i2s_bits(hw_params),
OXYGEN_I2S_RATE_MASK |
OXYGEN_I2S_FORMAT_MASK |
OXYGEN_I2S_MCLK_MASK |
OXYGEN_I2S_BITS_MASK);
oxygen_update_spdif_source(chip);
}
chip->model.set_dac_params(chip, hw_params);
oxygen_update_dac_routing(chip);
@@ -508,13 +507,12 @@ static int oxygen_hw_free(struct snd_pcm_substream *substream)
unsigned int channel = oxygen_substream_channel(substream);
unsigned int channel_mask = 1 << channel;
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
chip->interrupt_mask &= ~channel_mask;
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
oxygen_set_bits8(chip, OXYGEN_DMA_FLUSH, channel_mask);
oxygen_clear_bits8(chip, OXYGEN_DMA_FLUSH, channel_mask);
spin_unlock_irq(&chip->reg_lock);
return 0;
}
@@ -523,10 +521,10 @@ static int oxygen_spdif_hw_free(struct snd_pcm_substream *substream)
{
struct oxygen *chip = snd_pcm_substream_chip(substream);
spin_lock_irq(&chip->reg_lock);
oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
OXYGEN_SPDIF_OUT_ENABLE);
spin_unlock_irq(&chip->reg_lock);
scoped_guard(spinlock_irq, &chip->reg_lock) {
oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
OXYGEN_SPDIF_OUT_ENABLE);
}
return oxygen_hw_free(substream);
}
@@ -536,7 +534,7 @@ static int oxygen_prepare(struct snd_pcm_substream *substream)
unsigned int channel = oxygen_substream_channel(substream);
unsigned int channel_mask = 1 << channel;
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
oxygen_set_bits8(chip, OXYGEN_DMA_FLUSH, channel_mask);
oxygen_clear_bits8(chip, OXYGEN_DMA_FLUSH, channel_mask);
@@ -545,7 +543,6 @@ static int oxygen_prepare(struct snd_pcm_substream *substream)
else
chip->interrupt_mask |= channel_mask;
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
spin_unlock_irq(&chip->reg_lock);
return 0;
}
@@ -577,7 +574,7 @@ static int oxygen_trigger(struct snd_pcm_substream *substream, int cmd)
}
}
spin_lock(&chip->reg_lock);
guard(spinlock)(&chip->reg_lock);
if (!pausing) {
if (cmd == SNDRV_PCM_TRIGGER_START)
chip->pcm_running |= mask;
@@ -590,7 +587,6 @@ static int oxygen_trigger(struct snd_pcm_substream *substream, int cmd)
else
oxygen_clear_bits8(chip, OXYGEN_DMA_PAUSE, mask);
}
spin_unlock(&chip->reg_lock);
return 0;
}

3
sound/pci/oxygen/xonar_cs43xx.c
View File

@@ -339,11 +339,10 @@ static void xonar_d1_line_mic_ac97_switch(struct oxygen *chip,
unsigned int reg, unsigned int mute)
{
if (reg == AC97_LINE) {
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,
mute ? GPIO_D1_INPUT_ROUTE : 0,
GPIO_D1_INPUT_ROUTE);
spin_unlock_irq(&chip->reg_lock);
}
}

3
sound/pci/oxygen/xonar_lib.c
View File

@@ -109,7 +109,7 @@ int xonar_gpio_bit_switch_put(struct snd_kcontrol *ctl,
u16 old_bits, new_bits;
int changed;
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
old_bits = oxygen_read16(chip, OXYGEN_GPIO_DATA);
if (!!value->value.integer.value[0] ^ invert)
new_bits = old_bits | bit;
@@ -118,6 +118,5 @@ int xonar_gpio_bit_switch_put(struct snd_kcontrol *ctl,
changed = new_bits != old_bits;
if (changed)
oxygen_write16(chip, OXYGEN_GPIO_DATA, new_bits);
spin_unlock_irq(&chip->reg_lock);
return changed;
}

3
sound/pci/oxygen/xonar_pcm179x.c
View File

@@ -1021,11 +1021,10 @@ static void xonar_line_mic_ac97_switch(struct oxygen *chip,
unsigned int reg, unsigned int mute)
{
if (reg == AC97_LINE) {
spin_lock_irq(&chip->reg_lock);
guard(spinlock_irq)(&chip->reg_lock);
oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,
mute ? GPIO_INPUT_ROUTE : 0,
GPIO_INPUT_ROUTE);
spin_unlock_irq(&chip->reg_lock);
}
}