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Commit b88a2595 authored by Stephen Boyd's avatar Stephen Boyd Committed by Linus Torvalds
Browse files

perf/arm: Fix armpmu_map_hw_event() 



Fix constraint check in armpmu_map_hw_event().

Reported-and-tested-by: default avatarVince Weaver <vincent.weaver@maine.edu>
Cc: <stable@kernel.org>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e0acd0a6

arch/arm/kernel/perf_event.c

+6 −1
Original line number Diff line number Diff line
@@ -53,7 +53,12 @@ armpmu_map_cache_event(const unsigned (*cache_map) 
static int

armpmu_map_hw_event(const unsigned (*event_map)[PERF_COUNT_HW_MAX], u64 config)

{

	int mapping = (*event_map)[config];

	int mapping;



	if (config >= PERF_COUNT_HW_MAX)

		return -ENOENT;



	mapping = (*event_map)[config];

	return mapping == HW_OP_UNSUPPORTED ? -ENOENT : mapping;

}