ALSA: core: remove unused variables.

Drop a few variables that are never read.

Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/control.c

@@ -704,13 +704,12 @@ static int snd_ctl_elem_list(struct snd_card *card,
 	struct snd_ctl_elem_list list;
 	struct snd_kcontrol *kctl;
 	struct snd_ctl_elem_id *dst, *id;
-	unsigned int offset, space, first, jidx;
+	unsigned int offset, space, jidx;
 
 	if (copy_from_user(&list, _list, sizeof(list)))
 		return -EFAULT;
 	offset = list.offset;
 	space = list.space;
-	first = 0;
 	/* try limit maximum space */
 	if (space > 16384)
 		return -ENOMEM;

sound/core/init.c

@@ -342,7 +342,6 @@ static const struct file_operations snd_shutdown_f_ops =
 int snd_card_disconnect(struct snd_card *card)
 {
 	struct snd_monitor_file *mfile;
-	struct file *file;
 	int err;
 
 	if (!card)
@@ -366,8 +365,6 @@ int snd_card_disconnect(struct snd_card *card)
 
 	spin_lock(&card->files_lock);
 	list_for_each_entry(mfile, &card->files_list, list) {
-		file = mfile->file;
-
 		/* it's critical part, use endless loop */
 		/* we have no room to fail */
 		mfile->disconnected_f_op = mfile->file->f_op;

sound/core/oss/linear.c

@@ -90,11 +90,8 @@ static snd_pcm_sframes_t linear_transfer(struct snd_pcm_plugin *plugin,
 			       struct snd_pcm_plugin_channel *dst_channels,
 			       snd_pcm_uframes_t frames)
 {
-	struct linear_priv *data;
-
 	if (snd_BUG_ON(!plugin || !src_channels || !dst_channels))
 		return -ENXIO;
-	data = (struct linear_priv *)plugin->extra_data;
 	if (frames == 0)
 		return 0;
 #ifdef CONFIG_SND_DEBUG

sound/core/pcm_native.c

@@ -1527,13 +1527,11 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream,
 static int snd_pcm_drop(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime;
-	struct snd_card *card;
 	int result = 0;
 
 	if (PCM_RUNTIME_CHECK(substream))
 		return -ENXIO;
 	runtime = substream->runtime;
-	card = substream->pcm->card;
 
 	if (runtime->status->state == SNDRV_PCM_STATE_OPEN ||
 	    runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED ||
@@ -2065,7 +2063,6 @@ static int snd_pcm_open_file(struct file *file,
 {
 	struct snd_pcm_file *pcm_file;
 	struct snd_pcm_substream *substream;
-	struct snd_pcm_str *str;
 	int err;
 
 	if (rpcm_file)
@@ -2082,7 +2079,6 @@ static int snd_pcm_open_file(struct file *file,
 	}
 	pcm_file->substream = substream;
 	if (substream->ref_count == 1) {
-		str = substream->pstr;
 		substream->file = pcm_file;
 		substream->pcm_release = pcm_release_private;
 	}
@@ -3024,11 +3020,9 @@ static const struct vm_operations_struct snd_pcm_vm_ops_status =
 static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file,
 			       struct vm_area_struct *area)
 {
-	struct snd_pcm_runtime *runtime;
 	long size;
 	if (!(area->vm_flags & VM_READ))
 		return -EINVAL;
-	runtime = substream->runtime;
 	size = area->vm_end - area->vm_start;
 	if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status)))
 		return -EINVAL;
@@ -3063,11 +3057,9 @@ static const struct vm_operations_struct snd_pcm_vm_ops_control =
 static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file,
 				struct vm_area_struct *area)
 {
-	struct snd_pcm_runtime *runtime;
 	long size;
 	if (!(area->vm_flags & VM_READ))
 		return -EINVAL;
-	runtime = substream->runtime;
 	size = area->vm_end - area->vm_start;
 	if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control)))
 		return -EINVAL;

sound/core/seq/seq_queue.c

@@ -467,13 +467,11 @@ int snd_seq_queue_timer_open(int queueid)
 int snd_seq_queue_timer_close(int queueid)
 {
 	struct snd_seq_queue *queue;
-	struct snd_seq_timer *tmr;
 	int result = 0;
 
 	queue = queueptr(queueid);
 	if (queue == NULL)
 		return -EINVAL;
-	tmr = queue->timer;
 	snd_seq_timer_close(queue);
 	queuefree(queue);
 	return result;