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From: Anders Roxell <anders.roxell@linaro.org>
To: airlied@linux.ie, daniel@ffwll.ch, wens@csie.org
Cc: dri-devel@lists.freedesktop.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Anders Roxell <anders.roxell@linaro.org>
Subject: [PATCH 2/2] drm: sun4i: tcon: Mark expected switch fall-through
Date: Fri, 26 Jul 2019 13:28:07 +0200	[thread overview]
Message-ID: <20190726112807.19615-1-anders.roxell@linaro.org> (raw)

When fall-through warnings was enabled by default the following warning
was starting to show up:

../drivers/gpu/drm/sun4i/sun4i_tcon.c: In function ‘sun4i_tcon0_mode_set_dithering’:
../drivers/gpu/drm/sun4i/sun4i_tcon.c:316:7: warning: this statement may fall
 through [-Wimplicit-fallthrough=]
   val |= SUN4I_TCON0_FRM_CTL_MODE_B;
../drivers/gpu/drm/sun4i/sun4i_tcon.c:317:2: note: here
  case MEDIA_BUS_FMT_RGB666_1X18:
  ^~~~

Rework so that the compiler doesn't warn about fall-through.

Fixes: d93512ef0f0e ("Makefile: Globally enable fall-through warning")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
---
 drivers/gpu/drm/sun4i/sun4i_tcon.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index 690aeb822704..04c721d0d3b9 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -316,6 +316,7 @@ static void sun4i_tcon0_mode_set_dithering(struct sun4i_tcon *tcon,
 		/* R and B components are only 5 bits deep */
 		val |= SUN4I_TCON0_FRM_CTL_MODE_R;
 		val |= SUN4I_TCON0_FRM_CTL_MODE_B;
+		/* Fall through */
 	case MEDIA_BUS_FMT_RGB666_1X18:
 	case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
 		/* Fall through: enable dithering */
-- 
2.20.1


WARNING: multiple messages have this Message-ID (diff)
From: Anders Roxell <anders.roxell@linaro.org>
To: airlied@linux.ie, daniel@ffwll.ch, wens@csie.org
Cc: Anders Roxell <anders.roxell@linaro.org>,
	linux-arm-kernel@lists.infradead.org,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] drm: sun4i: tcon: Mark expected switch fall-through
Date: Fri, 26 Jul 2019 13:28:07 +0200	[thread overview]
Message-ID: <20190726112807.19615-1-anders.roxell@linaro.org> (raw)

When fall-through warnings was enabled by default the following warning
was starting to show up:

../drivers/gpu/drm/sun4i/sun4i_tcon.c: In function ‘sun4i_tcon0_mode_set_dithering’:
../drivers/gpu/drm/sun4i/sun4i_tcon.c:316:7: warning: this statement may fall
 through [-Wimplicit-fallthrough=]
   val |= SUN4I_TCON0_FRM_CTL_MODE_B;
../drivers/gpu/drm/sun4i/sun4i_tcon.c:317:2: note: here
  case MEDIA_BUS_FMT_RGB666_1X18:
  ^~~~

Rework so that the compiler doesn't warn about fall-through.

Fixes: d93512ef0f0e ("Makefile: Globally enable fall-through warning")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
---
 drivers/gpu/drm/sun4i/sun4i_tcon.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index 690aeb822704..04c721d0d3b9 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -316,6 +316,7 @@ static void sun4i_tcon0_mode_set_dithering(struct sun4i_tcon *tcon,
 		/* R and B components are only 5 bits deep */
 		val |= SUN4I_TCON0_FRM_CTL_MODE_R;
 		val |= SUN4I_TCON0_FRM_CTL_MODE_B;
+		/* Fall through */
 	case MEDIA_BUS_FMT_RGB666_1X18:
 	case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
 		/* Fall through: enable dithering */
-- 
2.20.1


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             reply	other threads:[~2019-07-26 11:28 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-26 11:28 Anders Roxell [this message]
2019-07-26 11:28 ` [PATCH 2/2] drm: sun4i: tcon: Mark expected switch fall-through Anders Roxell

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