1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index 49278537eec4..7a332b3efe51 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/drivers/media/video/bt8xx/bttv-driver.c
@@ -3072,6 +3072,8 @@ static int bttv_do_ioctl(struct inode *inode, struct file *file,
                                              V4L2_MEMORY_MMAP);
                 if (retval < 0)
                         goto fh_unlock_and_return;
+
+                gbuffers = retval;
                 memset(mbuf,0,sizeof(*mbuf));
                 mbuf->frames = gbuffers;
                 mbuf->size   = gbuffers * gbufsize;