* [PATCH] perf/arm-smmuv3: Propagate errors from optional IRQ lookup
@ 2026-08-11 4:19 phucduc.bui
0 siblings, 0 replies; only message in thread
From: phucduc.bui @ 2026-08-11 4:19 UTC (permalink / raw)
To: Will Deacon, Mark Rutland
Cc: linux-perf-users, linux-arm-kernel, linux-kernel, bui duc phuc
From: bui duc phuc <phucduc.bui@gmail.com>
platform_get_irq_optional() returns a positive IRQ number on success or
a negative error code on failure. For an optional IRQ, -ENXIO indicates
that no optional IRQ is available, while other errors should be propagated.
Propagate all error codes returned by platform_get_irq_optional() other
than -ENXIO.
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
drivers/perf/arm_smmuv3_pmu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/perf/arm_smmuv3_pmu.c b/drivers/perf/arm_smmuv3_pmu.c
index 621f02a7f43b..6c942697e57f 100644
--- a/drivers/perf/arm_smmuv3_pmu.c
+++ b/drivers/perf/arm_smmuv3_pmu.c
@@ -893,6 +893,8 @@ static int smmu_pmu_probe(struct platform_device *pdev)
}
irq = platform_get_irq_optional(pdev, 0);
+ if (irq < 0 && irq != -ENXIO)
+ return irq;
if (irq > 0)
smmu_pmu->irq = irq;
--
2.43.0
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