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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
1 changed files with 3 additions and 0 deletions
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3
drivers/media/video/videobuf-core.c
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@ -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);