Commit 75a382f1 authored Jul 29, 2019 by Will Deacon

arm64: hw_breakpoint: Fix warnings about implicit fallthrough



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>

parent 0d7fd70f

arch/arm64/kernel/hw_breakpoint.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}

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