[PATCH v4 1/4] ALSA: compress: Replace complex if statement with switch

[Charles Keepax <ckeepax@opensource.wolfsonmicro.com>]

A switch statement looks a bit cleaner than an if statement
spread over 3 lines, as such update this to a switch.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---
 sound/core/compress_offload.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
index a9933c0..507071d 100644
--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -288,9 +288,12 @@ static ssize_t snd_compr_write(struct file *f, const char __user *buf,
 	stream = &data->stream;
 	mutex_lock(&stream->device->lock);
 	/* write is allowed when stream is running or has been steup */
-	if (stream->runtime->state != SNDRV_PCM_STATE_SETUP &&
-	    stream->runtime->state != SNDRV_PCM_STATE_PREPARED &&
-			stream->runtime->state != SNDRV_PCM_STATE_RUNNING) {
+	switch (stream->runtime->state) {
+	case SNDRV_PCM_STATE_SETUP:
+	case SNDRV_PCM_STATE_PREPARED:
+	case SNDRV_PCM_STATE_RUNNING:
+		break;
+	default:
 		mutex_unlock(&stream->device->lock);
 		return -EBADFD;
 	}
-- 
2.1.4