media: pci: cx23885: replace BUG with error return

It was completely unnecessary to use BUG in buffer_prepare().
Just replace it with an error return. This also fixes a smatch warning:

drivers/media/pci/cx23885/cx23885-video.c:422 buffer_prepare() error: uninitialized symbol 'ret'.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/pci/cx23885/cx23885-video.c b/drivers/media/pci/cx23885/cx23885-video.c
index 671fc05..9af2c55 100644 (file)
--- a/drivers/media/pci/cx23885/cx23885-video.c
+++ b/drivers/media/pci/cx23885/cx23885-video.c
@@ -413,7 +413,7 @@ static int buffer_prepare(struct vb2_buffer *vb)
                                dev->height >> 1);
                break;
        default:
-               BUG();
+               return -EINVAL; /* should not happen */
        }
        dprintk(2, "[%p/%d] buffer_init - %dx%d %dbpp 0x%08x - dma=0x%08lx\n",
                buf, buf->vb.vb2_buf.index,