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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2016-03-31 08:47:02 +0900
committerTakashi Iwai <tiwai@suse.de>2016-03-31 15:36:17 +0200
commit44c376b9596ca00d1bdee37e716d1bd4dd36c955 (patch)
treec4924408e819b03f2faa43cd05938c369da8f169 /sound/firewire
parent97cc2ed27e5a168cf423f67c3bc7c6cc41d12f82 (diff)
ALSA: firewire-lib: suppress kernel warnings when releasing uninitialized stream data
When any of AMDTP stream data are not initialized and private data is going to be released, WARN_ON() in amdtp_stream_destroy() is hit and dump messages. This may take users irritated. This commit fixes the bug to skip releasing when it's not initialized. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire')
-rw-r--r--sound/firewire/amdtp-stream.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c
index ed2902609a4c..4484242da0e6 100644
--- a/sound/firewire/amdtp-stream.c
+++ b/sound/firewire/amdtp-stream.c
@@ -102,6 +102,10 @@ EXPORT_SYMBOL(amdtp_stream_init);
*/
void amdtp_stream_destroy(struct amdtp_stream *s)
{
+ /* Not initialized. */
+ if (s->protocol == NULL)
+ return;
+
WARN_ON(amdtp_stream_running(s));
kfree(s->protocol);
mutex_destroy(&s->mutex);