drm/sun4i: sun6i_mipi_dsi: Mark expected switch fall-through

Mark switch cases where we are expecting to fall through.

Fix the following warning (Building: multi_v7_defconfig arm):

drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c: In function ‘sun6i_dsi_transfer’:
drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c:993:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (msg->rx_len == 1) {
      ^
drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c:998:2: note: here
  default:
  ^~~~~~~

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>

diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
index a1fc8b520985506a5f050af1d9d3eb2729f120ea..b889ad3e86e179fa8b3f404aaaa28855d97be21b 100644 (file)
--- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
+++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
@@ -993,6 +993,7 @@ static ssize_t sun6i_dsi_transfer(struct mipi_dsi_host *host,
                        ret = sun6i_dsi_dcs_read(dsi, msg);
                        break;
                }
+               /* Else, fall through */
 
        default:
                ret = -EINVAL;