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Merge branch 'topic/bkl' into topic/core-cleanup

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This commit is contained in:
Takashi Iwai
2010-04-13 11:24:34 +02:00
parent 0d0fb0f9c5 4cf19b848f
commit 067e4a5d23
12 changed files with 633 additions and 205 deletions
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4
sound/core/info.c
View File

@@ -168,7 +168,7 @@ static loff_t snd_info_entry_llseek(struct file *file, loff_t offset, int orig)
data = file->private_data;
entry = data->entry;
lock_kernel();
mutex_lock(&entry->access);
switch (entry->content) {
case SNDRV_INFO_CONTENT_TEXT:
switch (orig) {
@@ -197,7 +197,7 @@ static loff_t snd_info_entry_llseek(struct file *file, loff_t offset, int orig)
}
ret = -ENXIO;
out:
unlock_kernel();
mutex_unlock(&entry->access);
return ret;
}

9
sound/core/pcm_native.c
View File

@@ -3303,18 +3303,13 @@ static int snd_pcm_fasync(int fd, struct file * file, int on)
struct snd_pcm_file * pcm_file;
struct snd_pcm_substream *substream;
struct snd_pcm_runtime *runtime;
int err = -ENXIO;
lock_kernel();
pcm_file = file->private_data;
substream = pcm_file->substream;
if (PCM_RUNTIME_CHECK(substream))
goto out;
return -ENXIO;
runtime = substream->runtime;
err = fasync_helper(fd, file, on, &runtime->fasync);
out:
unlock_kernel();
return err;
return fasync_helper(fd, file, on, &runtime->fasync);
}
/*

73
sound/core/sound.c
View File

@@ -120,7 +120,29 @@ void *snd_lookup_minor_data(unsigned int minor, int type)
EXPORT_SYMBOL(snd_lookup_minor_data);
static int __snd_open(struct inode *inode, struct file *file)
#ifdef CONFIG_MODULES
static struct snd_minor *autoload_device(unsigned int minor)
{
int dev;
mutex_unlock(&sound_mutex); /* release lock temporarily */
dev = SNDRV_MINOR_DEVICE(minor);
if (dev == SNDRV_MINOR_CONTROL) {
/* /dev/aloadC? */
int card = SNDRV_MINOR_CARD(minor);
if (snd_cards[card] == NULL)
snd_request_card(card);
} else if (dev == SNDRV_MINOR_GLOBAL) {
/* /dev/aloadSEQ */
snd_request_other(minor);
}
mutex_lock(&sound_mutex); /* reacuire lock */
return snd_minors[minor];
}
#else /* !CONFIG_MODULES */
#define autoload_device(minor) NULL
#endif /* CONFIG_MODULES */
static int snd_open(struct inode *inode, struct file *file)
{
unsigned int minor = iminor(inode);
struct snd_minor *mptr = NULL;
@@ -129,55 +151,36 @@ static int __snd_open(struct inode *inode, struct file *file)
if (minor >= ARRAY_SIZE(snd_minors))
return -ENODEV;
mutex_lock(&sound_mutex);
mptr = snd_minors[minor];
if (mptr == NULL) {
#ifdef CONFIG_MODULES
int dev = SNDRV_MINOR_DEVICE(minor);
if (dev == SNDRV_MINOR_CONTROL) {
/* /dev/aloadC? */
int card = SNDRV_MINOR_CARD(minor);
if (snd_cards[card] == NULL)
snd_request_card(card);
} else if (dev == SNDRV_MINOR_GLOBAL) {
/* /dev/aloadSEQ */
snd_request_other(minor);
}
#ifndef CONFIG_SND_DYNAMIC_MINORS
/* /dev/snd/{controlC?,seq} */
mptr = snd_minors[minor];
if (mptr == NULL)
#endif
#endif
mptr = autoload_device(minor);
if (!mptr) {
mutex_unlock(&sound_mutex);
return -ENODEV;
}
}
old_fops = file->f_op;
file->f_op = fops_get(mptr->f_ops);
if (file->f_op == NULL) {
file->f_op = old_fops;
return -ENODEV;
err = -ENODEV;
}
if (file->f_op->open)
mutex_unlock(&sound_mutex);
if (err < 0)
return err;
if (file->f_op->open) {
err = file->f_op->open(inode, file);
if (err) {
fops_put(file->f_op);
file->f_op = fops_get(old_fops);
if (err) {
fops_put(file->f_op);
file->f_op = fops_get(old_fops);
}
}
fops_put(old_fops);
return err;
}
/* BKL pushdown: nasty #ifdef avoidance wrapper */
static int snd_open(struct inode *inode, struct file *file)
{
int ret;
lock_kernel();
ret = __snd_open(inode, file);
unlock_kernel();
return ret;
}
static const struct file_operations snd_fops =
{
.owner = THIS_MODULE,