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ARM: 6469/1: perf-events: squash compiler warning

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armv7_pmnc_counter_has_overflowed can return uninitialised data
if an invalid counter is specified.

This patch fixes the code to return 0 in this case, which squashes
the compiler warning from GCC 4.5.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Will Deacon 2010-11-04 18:23:50 +01:00 • committed by Russell King
parent d33aadbf8e
commit c3b291d988
1 changed files with 1 additions and 1 deletions
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2
arch/arm/kernel/perf_event.c
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@ -1749,7 +1749,7 @@ static inline int armv7_pmnc_has_overflowed(unsigned long pmnc)
static inline int armv7_pmnc_counter_has_overflowed(unsigned long pmnc, static inline int armv7_pmnc_counter_has_overflowed(unsigned long pmnc,
enum armv7_counters counter) enum armv7_counters counter)
{ {
int ret; int ret = 0;
if (counter == ARMV7_CYCLE_COUNTER) if (counter == ARMV7_CYCLE_COUNTER)
ret = pmnc & ARMV7_FLAG_C; ret = pmnc & ARMV7_FLAG_C;