diff options
Diffstat (limited to 'drivers/media/pci/cx25821/cx25821-video-upstream.c')
| -rw-r--r-- | drivers/media/pci/cx25821/cx25821-video-upstream.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/media/pci/cx25821/cx25821-video-upstream.c b/drivers/media/pci/cx25821/cx25821-video-upstream.c index 1f43be0b04c8..a664997e1958 100644 --- a/drivers/media/pci/cx25821/cx25821-video-upstream.c +++ b/drivers/media/pci/cx25821/cx25821-video-upstream.c @@ -330,8 +330,9 @@ int cx25821_write_frame(struct cx25821_channel *chan, if (frame_size - curpos < count) count = frame_size - curpos; - memcpy((char *)out->_data_buf_virt_addr + frame_offset + curpos, - data, count); + if (copy_from_user((__force char *)out->_data_buf_virt_addr + frame_offset + curpos, + data, count)) + return -EFAULT; curpos += count; if (curpos == frame_size) { out->_frame_count++; |