As reported by smatch:
drivers/media/usb/go7007/go7007-driver.c:452 frame_boundary() warn:
variable dereferenced before check 'vb' (see line 449)
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
diff --git a/drivers/media/usb/go7007/go7007-driver.c
b/drivers/media/usb/go7007/go7007-driver.c
index 95cffb771a62..0ab81ec8897a 100644
--- a/drivers/media/usb/go7007/go7007-driver.c
+++ b/drivers/media/usb/go7007/go7007-driver.c
@@ -446,7 +446,7 @@ static void go7007_motion_regions(struct go7007 *go, struct
go7007_buffer *vb)
*/
static struct go7007_buffer *frame_boundary(struct go7007 *go, struct
go7007_buffer *vb)
{
- u32 *bytesused = &vb->vb.v4l2_planes[0].bytesused;
+ u32 *bytesused;
struct go7007_buffer *vb_tmp = NULL;
if (vb == NULL) {
@@ -458,6 +458,7 @@ static struct go7007_buffer *frame_boundary(struct go7007
*go, struct go7007_buf
go->next_seq++;
return vb;
}
+ bytesused = &vb->vb.v4l2_planes[0].bytesused;
vb->vb.v4l2_buf.sequence = go->next_seq++;
if (vb->modet_active && *bytesused + 216 < GO7007_BUF_SIZE)
--
2.1.0
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