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mfd: db8500-prcmu: Mark expected switch fall-throughs

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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>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Gustavo A. R. Silva 2019-07-28 18:56:14 -05:00 committed by Lee Jones
parent ec65b56046
commit b620c17672
1 changed files with 2 additions and 0 deletions
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2
drivers/mfd/db8500-prcmu.c
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@ -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;