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Subject[PATCH] drm: mali-dp: Mark expected switch fall-through
Date
When fall-through warnings was enabled by default, commit d93512ef0f0e
("Makefile: Globally enable fall-through warning"), the following
warnings was starting to show up:

../drivers/gpu/drm/arm/malidp_hw.c: In function ‘malidp_format_get_bpp’:
../drivers/gpu/drm/arm/malidp_hw.c:387:8: warning: this statement may fall
through [-Wimplicit-fallthrough=]
bpp = 30;
~~~~^~~~
../drivers/gpu/drm/arm/malidp_hw.c:388:3: note: here
case DRM_FORMAT_YUV420_10BIT:
^~~~
../drivers/gpu/drm/arm/malidp_hw.c: In function ‘malidp_se_irq’:
../drivers/gpu/drm/arm/malidp_hw.c:1311:4: warning: this statement may fall
through [-Wimplicit-fallthrough=]
drm_writeback_signal_completion(&malidp->mw_connector, 0);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/gpu/drm/arm/malidp_hw.c:1313:3: note: here
case MW_START:
^~~~

Rework to add a 'break;' in a case that didn't have it so that
the compiler doesn't warn about fall-through.

Cc: stable@vger.kernel.org # v4.9+
Fixes: b8207562abdd ("drm/arm/malidp: Specified the rotation memory requirements for AFBC YUV formats")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
---
drivers/gpu/drm/arm/malidp_hw.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/arm/malidp_hw.c b/drivers/gpu/drm/arm/malidp_hw.c
index 50af399d7f6f..dc5fff9af338 100644
--- a/drivers/gpu/drm/arm/malidp_hw.c
+++ b/drivers/gpu/drm/arm/malidp_hw.c
@@ -385,6 +385,7 @@ int malidp_format_get_bpp(u32 fmt)
switch (fmt) {
case DRM_FORMAT_VUY101010:
bpp = 30;
+ break;
case DRM_FORMAT_YUV420_10BIT:
bpp = 15;
break;
@@ -1309,7 +1310,7 @@ static irqreturn_t malidp_se_irq(int irq, void *arg)
break;
case MW_RESTART:
drm_writeback_signal_completion(&malidp->mw_connector, 0);
- /* fall through to a new start */
+ /* fall through */
case MW_START:
/* writeback started, need to emulate one-shot mode */
hw->disable_memwrite(hwdev);
--
2.20.1
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