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From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To: Linus Walleij <linus.walleij@linaro.org>,
	Lee Jones <lee.jones@linaro.org>
Cc: Kees Cook <keescook@chromium.org>,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	"Gustavo A. R. Silva" <gustavo@embeddedor.com>
Subject: [PATCH] mfd: db8500-prcmu: Mark expected switch fall-throughs
Date: Sun, 28 Jul 2019 18:56:14 -0500	[thread overview]
Message-ID: <20190728235614.GA23618@embeddedor> (raw)

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings:

drivers/mfd/db8500-prcmu.c: In function 'dsiclk_rate':
drivers/mfd/db8500-prcmu.c:1592:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   div *= 2;
   ~~~~^~~~
drivers/mfd/db8500-prcmu.c:1593:2: note: here
  case PRCM_DSI_PLLOUT_SEL_PHI_2:
  ^~~~
drivers/mfd/db8500-prcmu.c:1594:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   div *= 2;
   ~~~~^~~~
drivers/mfd/db8500-prcmu.c:1595:2: note: here
  case PRCM_DSI_PLLOUT_SEL_PHI:
  ^~~~

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 drivers/mfd/db8500-prcmu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 3f21e26b8d36..90e0f21bc49c 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -1590,8 +1590,10 @@ static unsigned long dsiclk_rate(u8 n)
 	switch (divsel) {
 	case PRCM_DSI_PLLOUT_SEL_PHI_4:
 		div *= 2;
+		/* Fall through */
 	case PRCM_DSI_PLLOUT_SEL_PHI_2:
 		div *= 2;
+		/* Fall through */
 	case PRCM_DSI_PLLOUT_SEL_PHI:
 		return pll_rate(PRCM_PLLDSI_FREQ, clock_rate(PRCMU_HDMICLK),
 			PLL_RAW) / div;
-- 
2.22.0


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WARNING: multiple messages have this Message-ID (diff)
From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To: Linus Walleij <linus.walleij@linaro.org>,
	Lee Jones <lee.jones@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	"Gustavo A. R. Silva" <gustavo@embeddedor.com>,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	Kees Cook <keescook@chromium.org>
Subject: [PATCH] mfd: db8500-prcmu: Mark expected switch fall-throughs
Date: Sun, 28 Jul 2019 18:56:14 -0500	[thread overview]
Message-ID: <20190728235614.GA23618@embeddedor> (raw)

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings:

drivers/mfd/db8500-prcmu.c: In function 'dsiclk_rate':
drivers/mfd/db8500-prcmu.c:1592:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   div *= 2;
   ~~~~^~~~
drivers/mfd/db8500-prcmu.c:1593:2: note: here
  case PRCM_DSI_PLLOUT_SEL_PHI_2:
  ^~~~
drivers/mfd/db8500-prcmu.c:1594:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   div *= 2;
   ~~~~^~~~
drivers/mfd/db8500-prcmu.c:1595:2: note: here
  case PRCM_DSI_PLLOUT_SEL_PHI:
  ^~~~

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 drivers/mfd/db8500-prcmu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 3f21e26b8d36..90e0f21bc49c 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -1590,8 +1590,10 @@ static unsigned long dsiclk_rate(u8 n)
 	switch (divsel) {
 	case PRCM_DSI_PLLOUT_SEL_PHI_4:
 		div *= 2;
+		/* Fall through */
 	case PRCM_DSI_PLLOUT_SEL_PHI_2:
 		div *= 2;
+		/* Fall through */
 	case PRCM_DSI_PLLOUT_SEL_PHI:
 		return pll_rate(PRCM_PLLDSI_FREQ, clock_rate(PRCMU_HDMICLK),
 			PLL_RAW) / div;
-- 
2.22.0


             reply	other threads:[~2019-07-28 23:56 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-28 23:56 Gustavo A. R. Silva [this message]
2019-07-28 23:56 ` [PATCH] mfd: db8500-prcmu: Mark expected switch fall-throughs Gustavo A. R. Silva
2019-07-29 16:35 ` Kees Cook
2019-07-29 16:35   ` Kees Cook
2019-08-07 13:12 ` Linus Walleij
2019-08-07 13:12   ` Linus Walleij
2019-08-12 10:30 ` Lee Jones
2019-08-12 10:30   ` Lee Jones

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