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Commit befceea9 authored by Takashi Iwai's avatar Takashi Iwai Committed by Jaroslav Kysela
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[ALSA] echoaudio - convert from semaphore to mutex 



Converted from semaphore to mutex.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@perex.cz>
parent e3cde64a

sound/pci/echoaudio/echoaudio.c

+9 −9
Original line number Diff line number Diff line
@@ -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 ! */

sound/pci/echoaudio/echoaudio.h

+1 −1
Original line number Diff line number Diff line
@@ -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;