From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
drivers/media/pci/cx25821/cx25821-video-upstream.c:334:25: warning: incorrect type in argument 2 (different address spaces)
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
drivers/media/pci/cx25821/cx25821-video-upstream.c | 5 +++--
1 file 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 1f43be0..a664997 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++;
--
2.1.0.rc1
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