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>
This commit is contained in:
Mauro Carvalho Chehab 2007-09-25 11:53:24 -03:00
parent 3bef5e4a1f
commit cd4765efdd

View File

@ -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);