[media] videobuf2: Fix a bug in fileio emulation error handling

Various error paths in fileio_init where not setting the request-count
to 0 when unrequesting the buffers on error to init the fileio emulation.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/videobuf2-core.c b/drivers/media/video/videobuf2-core.c
index 3786d88..9d4e9ed 100644 (file)
--- a/drivers/media/video/videobuf2-core.c
+++ b/drivers/media/video/videobuf2-core.c
@@ -1857,7 +1857,6 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
         * (multiplane buffers are not supported).
         */
        if (q->bufs[0]->num_planes != 1) {
-               fileio->req.count = 0;
                ret = -EBUSY;
                goto err_reqbufs;
        }
@@ -1904,6 +1903,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
        return ret;
 
 err_reqbufs:
+       fileio->req.count = 0;
        vb2_reqbufs(q, &fileio->req);
 
 err_kfree: