[media] videobuf2: fix core to correctly identify allocation failures

The videobuf2-dma-contig allocator returns an ERR_PTR() on failure, not
a NULL like all other allocators. Fix videobuf2-core to also correctly
recognise those failures.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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 6698c77e0f64c7f5667c1bb8556597f77675483b..71734a4da13564e433ab4531cd305be0fc2c9a62 100644 (file)
--- a/drivers/media/video/videobuf2-core.c
+++ b/drivers/media/video/videobuf2-core.c
@@ -51,7 +51,7 @@ static int __vb2_buf_mem_alloc(struct vb2_buffer *vb,
        for (plane = 0; plane < vb->num_planes; ++plane) {
                mem_priv = call_memop(q, plane, alloc, q->alloc_ctx[plane],
                                        plane_sizes[plane]);
-               if (!mem_priv)
+               if (IS_ERR_OR_NULL(mem_priv))
                        goto free;
 
                /* Associate allocator private data with this plane */