[media] videobuf2: Add debug print for the output buffer plane lengths checks

Add debug print so it's easier to find any errors resulting from
the planes' configuration checks added in commit 8023ed09cb278004a2
"videobuf2-core: Verify planes lengths for output buffers".

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
index ba389f58eec78d74bd27b184ffef025ac25e57f9..fc8af507beac27cb0fb271754325d58017c17251 100644 (file)
--- a/drivers/media/v4l2-core/videobuf2-core.c
+++ b/drivers/media/v4l2-core/videobuf2-core.c
@@ -1207,8 +1207,11 @@ static int __buf_prepare(struct vb2_buffer *vb, const struct v4l2_buffer *b)
        int ret;
 
        ret = __verify_length(vb, b);
-       if (ret < 0)
+       if (ret < 0) {
+               dprintk(1, "%s(): plane parameters verification failed: %d\n",
+                       __func__, ret);
                return ret;
+       }
 
        switch (q->memory) {
        case V4L2_MEMORY_MMAP: