[alsa-devel] [PATCH 2/3] ALSA: rawmidi: Use common error handling code in snd_rawmidi_new()

[SF Markus Elfring]

From: Markus Elfring <elfring at users.sourceforge.net>
Date: Sat, 11 Nov 2017 11:36:25 +0100

Add a jump target so that a bit of exception handling can be better reused
at the end of this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring at users.sourceforge.net>
---
 sound/core/rawmidi.c | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index c17f173150e9..34686000ecce 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -1560,10 +1560,8 @@ int snd_rawmidi_new(struct snd_card *card, char *id, int device,
 					 ->streams[SNDRV_RAWMIDI_STREAM_INPUT],
 					 SNDRV_RAWMIDI_STREAM_INPUT,
 					 input_count);
-	if (err < 0) {
-		snd_rawmidi_free(rmidi);
-		return err;
-	}
+	if (err < 0)
+		goto free_midi;
 
 	err =
 	    snd_rawmidi_alloc_substreams(rmidi,
@@ -1571,19 +1569,20 @@ int snd_rawmidi_new(struct snd_card *card, char *id, int device,
 					 ->streams[SNDRV_RAWMIDI_STREAM_OUTPUT],
 					 SNDRV_RAWMIDI_STREAM_OUTPUT,
 					 output_count);
-	if (err < 0) {
-		snd_rawmidi_free(rmidi);
-		return err;
-	}
+	if (err < 0)
+		goto free_midi;
 
 	err = snd_device_new(card, SNDRV_DEV_RAWMIDI, rmidi, &ops);
-	if (err < 0) {
-		snd_rawmidi_free(rmidi);
-		return err;
-	}
+	if (err < 0)
+		goto free_midi;
+
 	if (rrawmidi)
 		*rrawmidi = rmidi;
 	return 0;
+
+free_midi:
+	snd_rawmidi_free(rmidi);
+	return err;
 }
 EXPORT_SYMBOL(snd_rawmidi_new);
 
-- 
2.15.0