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powerpc/52xx: Add fallthrough in mpc52xx_wdt_ioctl()

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With gcc 10.3, there is this compiler error:

  compiler.h:56:26: error: this statement may fall through
  mpc52xx_gpt.c:586:2: note: here
    586 |  case WDIOC_GETTIMEOUT:
        |  ^~~~

So add the fallthrough pseudo keyword.

Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210601190200.2637776-1-trix@redhat.com
This commit is contained in:
Tom Rix 2021-06-01 12:02:00 -07:00 committed by Michael Ellerman
parent 9733862e50
commit b629f6c0ab
1 changed files with 1 additions and 0 deletions
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arch/powerpc/platforms/52xx/mpc52xx_gpt.c
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@ -582,6 +582,7 @@ static long mpc52xx_wdt_ioctl(struct file *file, unsigned int cmd,
if (ret)
break;
/* fall through and return the timeout */
fallthrough;
case WDIOC_GETTIMEOUT:
/* we need to round here as to avoid e.g. the following