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authorClemens Ladisch <clemens@ladisch.de>2012-05-18 18:00:43 +0200
committerBen Hutchings <ben@decadent.org.uk>2012-06-10 14:41:52 +0100
commitf139d067883637c9ab0091fbca821d01d0890123 (patch)
tree843a6eb7ad076d8a1cc20cd2958f5e587730dddf /sound/usb
parent168587994af06f0542dbbce9172fdb72ed74567f (diff)
ALSA: usb-audio: fix rate_list memory leak
commit 5cd5d7c44990658df6ab49f6253c39617c53b03d upstream. The array of sample rates is reallocated every time when opening the PCM device, but was freed only once when unplugging the device. Reported-by: "Alexander E. Patrakov" <patrakov@gmail.com> Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'sound/usb')
-rw-r--r--sound/usb/pcm.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index 0220b0f335b9..839165fb7e5f 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -698,6 +698,9 @@ static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime,
int count = 0, needs_knot = 0;
int err;
+ kfree(subs->rate_list.list);
+ subs->rate_list.list = NULL;
+
list_for_each_entry(fp, &subs->fmt_list, list) {
if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)
return 0;