ALSA: compress_offload: Use runtime pointer in snd_compr_poll()

runtime is not used as seen with W=1 :
sound/core/compress_offload.c: In function ‘snd_compr_poll’:
sound/core/compress_offload.c:409:35: error: variable ‘runtime’ set but not used [-Werror=unused-but-set-variable]
  409 |         struct snd_compr_runtime *runtime;
      |                                   ^~~~~~~

Instead of dropping the runtime, use it in the function in place of
stream->runtime

Fixes: 0417715 ("ALSA: compress_offload: introduce accel operation mode")
Signed-off-by: Peter Ujfalusi <[email protected]>
Reviewed-by: Jaroslav Kysela <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>

Author: ujfalusi

sound/core/compress_offload.c

@@ -418,15 +418,15 @@ static __poll_t snd_compr_poll(struct file *f, poll_table *wait)
 
 	guard(mutex)(&stream->device->lock);
 
-	switch (stream->runtime->state) {
+	switch (runtime->state) {
 	case SNDRV_PCM_STATE_OPEN:
 	case SNDRV_PCM_STATE_XRUN:
 		return snd_compr_get_poll(stream) | EPOLLERR;
 	default:
 		break;
 	}
 
-	poll_wait(f, &stream->runtime->sleep, wait);
+	poll_wait(f, &runtime->sleep, wait);
 
 #if IS_ENABLED(CONFIG_SND_COMPRESS_ACCEL)
 	if (stream->direction == SND_COMPRESS_ACCEL) {
@@ -445,18 +445,18 @@ static __poll_t snd_compr_poll(struct file *f, poll_table *wait)
 	avail = snd_compr_get_avail(stream);
 	pr_debug("avail is %ld\n", (unsigned long)avail);
 	/* check if we have at least one fragment to fill */
-	switch (stream->runtime->state) {
+	switch (runtime->state) {
 	case SNDRV_PCM_STATE_DRAINING:
 		/* stream has been woken up after drain is complete
 		 * draining done so set stream state to stopped
 		 */
 		retval = snd_compr_get_poll(stream);
-		stream->runtime->state = SNDRV_PCM_STATE_SETUP;
+		runtime->state = SNDRV_PCM_STATE_SETUP;
 		break;
 	case SNDRV_PCM_STATE_RUNNING:
 	case SNDRV_PCM_STATE_PREPARED:
 	case SNDRV_PCM_STATE_PAUSED:
-		if (avail >= stream->runtime->fragment_size)
+		if (avail >= runtime->fragment_size)
 			retval = snd_compr_get_poll(stream);
 		break;
 	default: