lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[ALSA] echoaudio - convert from semaphore to mutex

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

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 ! */