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arm64: hw_breakpoint: Fix warnings about implicit fallthrough

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Now that -Wimplicit-fallthrough is passed to GCC by default, the kernel
build has suddenly got noisy. Annotate the two fall-through cases in our
hw_breakpoint implementation, since they are both intentional.

Reported-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Will Deacon 2019-07-29 11:39:45 +01:00
parent 0d7fd70f26
commit 75a382f1c9
1 changed files with 4 additions and 0 deletions
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4
arch/arm64/kernel/hw_breakpoint.c
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@ -540,10 +540,14 @@ int hw_breakpoint_arch_parse(struct perf_event *bp,
/* Allow halfword watchpoints and breakpoints. */
if (hw->ctrl.len == ARM_BREAKPOINT_LEN_2)
break;
/* Fallthrough */
case 3:
/* Allow single byte watchpoint. */
if (hw->ctrl.len == ARM_BREAKPOINT_LEN_1)
break;
/* Fallthrough */
default:
return -EINVAL;
}