[PATCH] media: imx: vdic: Restore default case to prepare_vdi_in_buffers()

[Steve Longerbeam]

Restore a default case to prepare_vdi_in_buffers() to fix the following
smatch errors:

drivers/staging/media/imx/imx-media-vdic.c:236 prepare_vdi_in_buffers() error: uninitialized symbol 'prev_phys'.
drivers/staging/media/imx/imx-media-vdic.c:237 prepare_vdi_in_buffers() error: uninitialized symbol 'curr_phys'.
drivers/staging/media/imx/imx-media-vdic.c:238 prepare_vdi_in_buffers() error: uninitialized symbol 'next_phys'.

Fixes: 6e537b58de772 ("media: imx: vdic: rely on VDIC for correct field order")

Reported-by: Hans Verkuil <hverkuil@xxxxxxxxx>
Signed-off-by: Steve Longerbeam <slongerbeam@xxxxxxxxx>
---
 drivers/staging/media/imx/imx-media-vdic.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/staging/media/imx/imx-media-vdic.c b/drivers/staging/media/imx/imx-media-vdic.c
index 2808662e2597..37bfbd4a1c39 100644
--- a/drivers/staging/media/imx/imx-media-vdic.c
+++ b/drivers/staging/media/imx/imx-media-vdic.c
@@ -231,6 +231,12 @@ static void __maybe_unused prepare_vdi_in_buffers(struct vdic_priv *priv,
 		curr_phys = vb2_dma_contig_plane_dma_addr(curr_vb, 0);
 		next_phys = vb2_dma_contig_plane_dma_addr(curr_vb, 0) + is;
 		break;
+	default:
+		/*
+		 * can't get here, priv->fieldtype can only be one of
+		 * the above. This is to quiet smatch errors.
+		 */
+		return;
 	}
 
 	ipu_cpmem_set_buffer(priv->vdi_in_ch_p, 0, prev_phys);
-- 
2.17.1