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-rw-r--r--sound/core/compress_offload.c98
1 files changed, 33 insertions, 65 deletions
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
index 5d926c5b737d..f0008fa2d839 100644
--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -127,9 +127,8 @@ static int snd_compr_open(struct inode *inode, struct file *f)
init_waitqueue_head(&runtime->sleep);
data->stream.runtime = runtime;
f->private_data = (void *)data;
- mutex_lock(&compr->lock);
- ret = compr->ops->open(&data->stream);
- mutex_unlock(&compr->lock);
+ scoped_guard(mutex, &compr->lock)
+ ret = compr->ops->open(&data->stream);
if (ret) {
kfree(runtime);
kfree(data);
@@ -288,7 +287,7 @@ static ssize_t snd_compr_write(struct file *f, const char __user *buf,
return -EFAULT;
stream = &data->stream;
- mutex_lock(&stream->device->lock);
+ guard(mutex)(&stream->device->lock);
/* write is allowed when stream is running or has been steup */
switch (stream->runtime->state) {
case SNDRV_PCM_STATE_SETUP:
@@ -296,7 +295,6 @@ static ssize_t snd_compr_write(struct file *f, const char __user *buf,
case SNDRV_PCM_STATE_RUNNING:
break;
default:
- mutex_unlock(&stream->device->lock);
return -EBADFD;
}
@@ -322,7 +320,6 @@ static ssize_t snd_compr_write(struct file *f, const char __user *buf,
pr_debug("stream prepared, Houston we are good to go\n");
}
- mutex_unlock(&stream->device->lock);
return retval;
}
@@ -339,7 +336,7 @@ static ssize_t snd_compr_read(struct file *f, char __user *buf,
return -EFAULT;
stream = &data->stream;
- mutex_lock(&stream->device->lock);
+ guard(mutex)(&stream->device->lock);
/* read is allowed when stream is running, paused, draining and setup
* (yes setup is state which we transition to after stop, so if user
@@ -350,11 +347,9 @@ static ssize_t snd_compr_read(struct file *f, char __user *buf,
case SNDRV_PCM_STATE_PREPARED:
case SNDRV_PCM_STATE_SUSPENDED:
case SNDRV_PCM_STATE_DISCONNECTED:
- retval = -EBADFD;
- goto out;
+ return -EBADFD;
case SNDRV_PCM_STATE_XRUN:
- retval = -EPIPE;
- goto out;
+ return -EPIPE;
}
avail = snd_compr_get_avail(stream);
@@ -363,17 +358,13 @@ static ssize_t snd_compr_read(struct file *f, char __user *buf,
if (avail > count)
avail = count;
- if (stream->ops->copy) {
+ if (stream->ops->copy)
retval = stream->ops->copy(stream, buf, avail);
- } else {
- retval = -ENXIO;
- goto out;
- }
+ else
+ return -ENXIO;
if (retval > 0)
stream->runtime->total_bytes_transferred += retval;
-out:
- mutex_unlock(&stream->device->lock);
return retval;
}
@@ -402,13 +393,12 @@ static __poll_t snd_compr_poll(struct file *f, poll_table *wait)
stream = &data->stream;
- mutex_lock(&stream->device->lock);
+ guard(mutex)(&stream->device->lock);
switch (stream->runtime->state) {
case SNDRV_PCM_STATE_OPEN:
case SNDRV_PCM_STATE_XRUN:
- retval = snd_compr_get_poll(stream) | EPOLLERR;
- goto out;
+ return snd_compr_get_poll(stream) | EPOLLERR;
default:
break;
}
@@ -433,11 +423,9 @@ static __poll_t snd_compr_poll(struct file *f, poll_table *wait)
retval = snd_compr_get_poll(stream);
break;
default:
- retval = snd_compr_get_poll(stream) | EPOLLERR;
- break;
+ return snd_compr_get_poll(stream) | EPOLLERR;
}
-out:
- mutex_unlock(&stream->device->lock);
+
return retval;
}
@@ -795,12 +783,10 @@ static void error_delayed_work(struct work_struct *work)
stream = container_of(work, struct snd_compr_stream, error_work.work);
- mutex_lock(&stream->device->lock);
+ guard(mutex)(&stream->device->lock);
stream->ops->trigger(stream, SNDRV_PCM_TRIGGER_STOP);
wake_up(&stream->runtime->sleep);
-
- mutex_unlock(&stream->device->lock);
}
/**
@@ -957,70 +943,52 @@ static long snd_compr_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
{
struct snd_compr_file *data = f->private_data;
struct snd_compr_stream *stream;
- int retval = -ENOTTY;
if (snd_BUG_ON(!data))
return -EFAULT;
stream = &data->stream;
- mutex_lock(&stream->device->lock);
+ guard(mutex)(&stream->device->lock);
switch (_IOC_NR(cmd)) {
case _IOC_NR(SNDRV_COMPRESS_IOCTL_VERSION):
- retval = put_user(SNDRV_COMPRESS_VERSION,
+ return put_user(SNDRV_COMPRESS_VERSION,
(int __user *)arg) ? -EFAULT : 0;
- break;
case _IOC_NR(SNDRV_COMPRESS_GET_CAPS):
- retval = snd_compr_get_caps(stream, arg);
- break;
+ return snd_compr_get_caps(stream, arg);
#ifndef COMPR_CODEC_CAPS_OVERFLOW
case _IOC_NR(SNDRV_COMPRESS_GET_CODEC_CAPS):
- retval = snd_compr_get_codec_caps(stream, arg);
- break;
+ return snd_compr_get_codec_caps(stream, arg);
#endif
case _IOC_NR(SNDRV_COMPRESS_SET_PARAMS):
- retval = snd_compr_set_params(stream, arg);
- break;
+ return snd_compr_set_params(stream, arg);
case _IOC_NR(SNDRV_COMPRESS_GET_PARAMS):
- retval = snd_compr_get_params(stream, arg);
- break;
+ return snd_compr_get_params(stream, arg);
case _IOC_NR(SNDRV_COMPRESS_SET_METADATA):
- retval = snd_compr_set_metadata(stream, arg);
- break;
+ return snd_compr_set_metadata(stream, arg);
case _IOC_NR(SNDRV_COMPRESS_GET_METADATA):
- retval = snd_compr_get_metadata(stream, arg);
- break;
+ return snd_compr_get_metadata(stream, arg);
case _IOC_NR(SNDRV_COMPRESS_TSTAMP):
- retval = snd_compr_tstamp(stream, arg);
- break;
+ return snd_compr_tstamp(stream, arg);
case _IOC_NR(SNDRV_COMPRESS_AVAIL):
- retval = snd_compr_ioctl_avail(stream, arg);
- break;
+ return snd_compr_ioctl_avail(stream, arg);
case _IOC_NR(SNDRV_COMPRESS_PAUSE):
- retval = snd_compr_pause(stream);
- break;
+ return snd_compr_pause(stream);
case _IOC_NR(SNDRV_COMPRESS_RESUME):
- retval = snd_compr_resume(stream);
- break;
+ return snd_compr_resume(stream);
case _IOC_NR(SNDRV_COMPRESS_START):
- retval = snd_compr_start(stream);
- break;
+ return snd_compr_start(stream);
case _IOC_NR(SNDRV_COMPRESS_STOP):
- retval = snd_compr_stop(stream);
- break;
+ return snd_compr_stop(stream);
case _IOC_NR(SNDRV_COMPRESS_DRAIN):
- retval = snd_compr_drain(stream);
- break;
+ return snd_compr_drain(stream);
case _IOC_NR(SNDRV_COMPRESS_PARTIAL_DRAIN):
- retval = snd_compr_partial_drain(stream);
- break;
+ return snd_compr_partial_drain(stream);
case _IOC_NR(SNDRV_COMPRESS_NEXT_TRACK):
- retval = snd_compr_next_track(stream);
- break;
-
+ return snd_compr_next_track(stream);
}
- mutex_unlock(&stream->device->lock);
- return retval;
+
+ return -ENOTTY;
}
/* support of 32bit userspace on 64bit platforms */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 05:15:44 +0000