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authorSuzuki K Poulose <Suzuki.Poulose@arm.com>2018-01-15 10:51:16 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2018-01-15 18:02:17 +0000
commita22fde8e979494f326e88ef0728367e009260d75 (patch)
treebb0d3c26f09d67eb46c1dbbb59ac969fcebd97d1 /drivers
parent67948af41f2e6818edeeba5182811c704d484949 (diff)
perf: dsu: Use signed field for dsu_pmu->num_counters
We set dsu_pmu->num_counters to -1, when the DSU is allocated but not initialised when none of the CPUs are active in the DSU. However, we use an unsigned field for num_counters. Switch this to a signed field. Fixes: 7520fa99246d ("perf: ARM DynamIQ Shared Unit PMU support") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/perf/arm_dsu_pmu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/perf/arm_dsu_pmu.c b/drivers/perf/arm_dsu_pmu.c
index 37c0526c93d5..93c50e377507 100644
--- a/drivers/perf/arm_dsu_pmu.c
+++ b/drivers/perf/arm_dsu_pmu.c
@@ -120,7 +120,7 @@ struct dsu_pmu {
cpumask_t associated_cpus;
cpumask_t active_cpu;
struct hlist_node cpuhp_node;
- u8 num_counters;
+ s8 num_counters;
int irq;
DECLARE_BITMAP(cpmceid_bitmap, DSU_PMU_MAX_COMMON_EVENTS);
};

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