From: Anders Roxell <anders.rox...@linaro.org>

commit 28ba1b1da49a20ba8fb767d6ddd7c521ec79a119 upstream.

Now that -Wimplicit-fallthrough is passed to GCC by default, the
following warnings shows 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: sta...@vger.kernel.org # v5.2+
Fixes: b8207562abdd ("drm/arm/malidp: Specified the rotation memory 
requirements for AFBC YUV formats")
Acked-by: Liviu Dudau <liviu.du...@arm.com>
Signed-off-by: Anders Roxell <anders.rox...@linaro.org>
Signed-off-by: Liviu Dudau <liviu.du...@arm.com>
Link: 
https://patchwork.freedesktop.org/patch/msgid/20190730153056.3606-1-anders.rox...@linaro.org
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/gpu/drm/arm/malidp_hw.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- 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
                        break;
                case MW_RESTART:
                        drm_writeback_signal_completion(&malidp->mw_connector, 
0);
-                       /* fall through to a new start */
+                       /* fall through - to a new start */
                case MW_START:
                        /* writeback started, need to emulate one-shot mode */
                        hw->disable_memwrite(hwdev);


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