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authorKrzysztof Helt <krzysztof.h1@wp.pl>2007-10-16 14:54:14 +0200
committerJaroslav Kysela <perex@perex.cz>2007-10-16 16:51:26 +0200
commitca2df45a072cef11143f9be8d36c3c256cbebd7b (patch)
treec9a5cfb7eae7f734abe4ebf24ebf014e31ea9572 /sound
parent[ALSA] fix bootup crash in snd_gus_interrupt() (diff)
downloadlinux-dev-ca2df45a072cef11143f9be8d36c3c256cbebd7b.tar.xz
linux-dev-ca2df45a072cef11143f9be8d36c3c256cbebd7b.zip
[ALSA] This patch removes open_mutex from the ad1848-lib as
open and close operations are called only from pcm layer and mutexed there with pcm->open_mutex. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound')
-rw-r--r--sound/isa/ad1848/ad1848_lib.c14
1 files changed, 3 insertions, 11 deletions
diff --git a/sound/isa/ad1848/ad1848_lib.c b/sound/isa/ad1848/ad1848_lib.c
index 31209e11cee5..a901cd1ee692 100644
--- a/sound/isa/ad1848/ad1848_lib.c
+++ b/sound/isa/ad1848/ad1848_lib.c
@@ -378,11 +378,9 @@ static int snd_ad1848_open(struct snd_ad1848 *chip, unsigned int mode)
{
unsigned long flags;
- mutex_lock(&chip->open_mutex);
- if (chip->mode & AD1848_MODE_OPEN) {
- mutex_unlock(&chip->open_mutex);
+ if (chip->mode & AD1848_MODE_OPEN)
return -EAGAIN;
- }
+
snd_ad1848_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
@@ -423,7 +421,6 @@ static int snd_ad1848_open(struct snd_ad1848 *chip, unsigned int mode)
spin_unlock_irqrestore(&chip->reg_lock, flags);
chip->mode = mode;
- mutex_unlock(&chip->open_mutex);
return 0;
}
@@ -432,11 +429,8 @@ static void snd_ad1848_close(struct snd_ad1848 *chip)
{
unsigned long flags;
- mutex_lock(&chip->open_mutex);
- if (!chip->mode) {
- mutex_unlock(&chip->open_mutex);
+ if (!chip->mode)
return;
- }
/* disable IRQ */
spin_lock_irqsave(&chip->reg_lock, flags);
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
@@ -462,7 +456,6 @@ static void snd_ad1848_close(struct snd_ad1848 *chip)
spin_unlock_irqrestore(&chip->reg_lock, flags);
chip->mode = 0;
- mutex_unlock(&chip->open_mutex);
}
/*
@@ -880,7 +873,6 @@ int snd_ad1848_create(struct snd_card *card,
if (chip == NULL)
return -ENOMEM;
spin_lock_init(&chip->reg_lock);
- mutex_init(&chip->open_mutex);
chip->card = card;
chip->port = port;
chip->irq = -1;