When fall-through warnings was enabled by default the following warning
was starting to show up:
../drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c: In function
‘sun6i_dsi_transfer’:../drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c:992:6: warning:
this statement may fall through [-Wimplicit-fallthrough=]
if (msg->rx_len == 1) {
^
../drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c:997:2: note: here
default:
^~~~~~~
Rework so that the compiler doesn't warn about fall-through. Change
the if-statement so that we can move out 'break;' one level.
Fixes: d93512ef0f0e ("Makefile: Globally enable fall-through warning")
Signed-off-by: Anders Roxell <[email protected]>
---
drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
index 472f73985deb..40ed21e527f9 100644
--- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
+++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
@@ -992,8 +992,10 @@ static ssize_t sun6i_dsi_transfer(struct mipi_dsi_host *host,
case MIPI_DSI_DCS_READ:
if (msg->rx_len == 1) {
ret = sun6i_dsi_dcs_read(dsi, msg);
- break;
+ } else {
+ ret = -EINVAL;
}
+ break;
default:
ret = -EINVAL;
--
2.20.1