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authorMauro Carvalho Chehab <mchehab@infradead.org>2007-09-25 11:53:24 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-10-10 00:02:55 -0300
commitcd4765efdd816ac14075fc7d5adf489502e75e1e (patch)
tree6c7a119255c28349fdcd4b64379c545b8f7f3886 /drivers/media/video/videobuf-core.c
parent3bef5e4a1f73898dc8c8433f938d3a8b22f2be22 (diff)
V4L/DVB (6265): Prevent for calling mmap_free without an allocated buffer
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org> http://thread.gmane.org/gmane.comp.video.video4linux/34978/focus=34981 Reviewed-by: Ricardo Cerqueira <v4l@cerqueira.org>
Diffstat (limited to 'drivers/media/video/videobuf-core.c')
-rw-r--r--drivers/media/video/videobuf-core.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c
index 256501384af7..eb3b98400c1b 100644
--- a/drivers/media/video/videobuf-core.c
+++ b/drivers/media/video/videobuf-core.c
@@ -880,6 +880,9 @@ int videobuf_mmap_free(struct videobuf_queue *q)
int i;
int rc;
+ if (!q)
+ return 0;
+
MAGIC_CHECK(q->int_ops->magic,MAGIC_QTYPE_OPS);
rc = CALL(q,mmap_free,q);