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[ALSA] echoaudio - convert from semaphore to mutex 

Converted from semaphore to mutex.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Takashi Iwai 2007-12-03 17:08:40 +01:00 committed by Jaroslav Kysela
parent e3cde64af4
commit befceea90b
2 changed files with 10 additions and 10 deletions
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18
sound/pci/echoaudio/echoaudio.c
View File

@ -378,7 +378,7 @@ static int pcm_digital_in_open(struct snd_pcm_substream *substream)
DE_ACT(("pcm_digital_in_open\n"));
max_channels = num_digital_busses_in(chip) - substream->number;
down(&chip->mode_mutex);
mutex_lock(&chip->mode_mutex);
if (chip->digital_mode == DIGITAL_MODE_ADAT)
err = pcm_open(substream, max_channels);
else /* If the card has ADAT, subtract the 6 channels
@ -405,7 +405,7 @@ static int pcm_digital_in_open(struct snd_pcm_substream *substream)
chip->can_set_rate=0;
din_exit:
up(&chip->mode_mutex);
mutex_unlock(&chip->mode_mutex);
return err;
}
@ -420,7 +420,7 @@ static int pcm_digital_out_open(struct snd_pcm_substream *substream)
DE_ACT(("pcm_digital_out_open\n"));
max_channels = num_digital_busses_out(chip) - substream->number;
down(&chip->mode_mutex);
mutex_lock(&chip->mode_mutex);
if (chip->digital_mode == DIGITAL_MODE_ADAT)
err = pcm_open(substream, max_channels);
else /* If the card has ADAT, subtract the 6 channels
@ -447,7 +447,7 @@ static int pcm_digital_out_open(struct snd_pcm_substream *substream)
if (atomic_read(&chip->opencount) > 1 && chip->rate_set)
chip->can_set_rate=0;
dout_exit:
up(&chip->mode_mutex);
mutex_unlock(&chip->mode_mutex);
return err;
}
@ -1420,7 +1420,7 @@ static int snd_echo_digital_mode_put(struct snd_kcontrol *kcontrol,
if (dmode != chip->digital_mode) {
/* mode_mutex is required to make this operation atomic wrt
pcm_digital_*_open() and set_input_clock() functions. */
down(&chip->mode_mutex);
mutex_lock(&chip->mode_mutex);
/* Do not allow the user to change the digital mode when a pcm
device is open because it also changes the number of channels
@ -1439,7 +1439,7 @@ static int snd_echo_digital_mode_put(struct snd_kcontrol *kcontrol,
if (changed >= 0)
changed = 1; /* No errors */
}
up(&chip->mode_mutex);
mutex_unlock(&chip->mode_mutex);
}
return changed;
}
@ -1566,12 +1566,12 @@ static int snd_echo_clock_source_put(struct snd_kcontrol *kcontrol,
return -EINVAL;
dclock = chip->clock_source_list[eclock];
if (chip->input_clock != dclock) {
down(&chip->mode_mutex);
mutex_lock(&chip->mode_mutex);
spin_lock_irq(&chip->lock);
if ((changed = set_input_clock(chip, dclock)) == 0)
changed = 1; /* no errors */
spin_unlock_irq(&chip->lock);
up(&chip->mode_mutex);
mutex_unlock(&chip->mode_mutex);
}
if (changed < 0)
@ -1972,7 +1972,7 @@ static __devinit int snd_echo_create(struct snd_card *card,
return err;
}
atomic_set(&chip->opencount, 0);
init_MUTEX(&chip->mode_mutex);
mutex_init(&chip->mode_mutex);
chip->can_set_rate = 1;
*rchip = chip;
/* Init done ! */

2
sound/pci/echoaudio/echoaudio.h
View File

@ -361,7 +361,7 @@ struct echoaudio {
spinlock_t lock;
struct snd_pcm_substream *substream[DSP_MAXPIPES];
int last_period[DSP_MAXPIPES];
struct semaphore mode_mutex;
struct mutex mode_mutex;
u16 num_digital_modes, digital_mode_list[6];
u16 num_clock_sources, clock_source_list[10];
atomic_t opencount;