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Subject[PATCH] driver: perf: arm_pmuv3: Read PMMIR_EL1 unconditionally
Date
PMMIR_EL1 needs to be captured in 'armpmu->reg_pmmir', for all appropriate
PMU version implementations where the register is available and reading it
is valid . Hence checking for bus slot event presence is redundant and can
be dropped.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
This applies on v6.6-rc5.

drivers/perf/arm_pmuv3.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/perf/arm_pmuv3.c b/drivers/perf/arm_pmuv3.c
index 1e72b486c033..9fc1b6da5106 100644
--- a/drivers/perf/arm_pmuv3.c
+++ b/drivers/perf/arm_pmuv3.c
@@ -1129,7 +1129,7 @@ static void __armv8pmu_probe_pmu(void *info)
pmceid, ARMV8_PMUV3_MAX_COMMON_EVENTS);

/* store PMMIR register for sysfs */
- if (is_pmuv3p4(pmuver) && (pmceid_raw[1] & BIT(31)))
+ if (is_pmuv3p4(pmuver))
cpu_pmu->reg_pmmir = read_pmmir();
else
cpu_pmu->reg_pmmir = 0;
--
2.25.1
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