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authorRobin Murphy <robin.murphy@arm.com>2021-03-26 16:02:40 +0000
committerWill Deacon <will@kernel.org>2021-03-30 11:41:50 +0100
commit11fa1dc8020a2a9e0c59998920092d4df3fb7308 (patch)
tree3c4aedb11288ab7437b54941fb75623a65a7b0bf /drivers/perf
parentb88f5e9792cc320a511697dcba8890d032ee3ed3 (diff)
perf/arm_pmu_platform: Use dev_err_probe() for IRQ errors
By virtue of using platform_irq_get_optional() under the covers, platform_irq_count() needs the target interrupt controller to be available and may return -EPROBE_DEFER if it isn't. Let's use dev_err_probe() to avoid a spurious error log (and help debug any deferral issues) in that case. Reported-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/073d5e0d3ed1f040592cb47ca6fe3759f40cc7d1.1616774562.git.robin.murphy@arm.com Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/perf')
-rw-r--r--drivers/perf/arm_pmu_platform.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/perf/arm_pmu_platform.c b/drivers/perf/arm_pmu_platform.c
index 933bd8410fc2..bb6ae955083a 100644
--- a/drivers/perf/arm_pmu_platform.c
+++ b/drivers/perf/arm_pmu_platform.c
@@ -6,6 +6,7 @@
* Copyright (C) 2010 ARM Ltd., Will Deacon <will.deacon@arm.com>
*/
#define pr_fmt(fmt) "hw perfevents: " fmt
+#define dev_fmt pr_fmt
#include <linux/bug.h>
#include <linux/cpumask.h>
@@ -100,10 +101,8 @@ static int pmu_parse_irqs(struct arm_pmu *pmu)
struct pmu_hw_events __percpu *hw_events = pmu->hw_events;
num_irqs = platform_irq_count(pdev);
- if (num_irqs < 0) {
- pr_err("unable to count PMU IRQs\n");
- return num_irqs;
- }
+ if (num_irqs < 0)
+ return dev_err_probe(&pdev->dev, num_irqs, "unable to count PMU IRQs\n");
/*
* In this case we have no idea which CPUs are covered by the PMU.