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| author | Shannon Zhao <shannon.zhao@linaro.org> | 2015-06-29 09:02:40 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2015-06-30 18:13:05 +0100 |
| commit | b265da5a45ce60bd3d7505cc0eaa6cfba50946a1 (patch) | |
| tree | 2fb8f58816d762241dcbc9120fad40e32b4a8c43 /arch | |
| parent | 18a11b5e79697ddc61e30181737c91ce21eaa859 (diff) | |
| download | linux-b265da5a45ce60bd3d7505cc0eaa6cfba50946a1.tar.gz linux-b265da5a45ce60bd3d7505cc0eaa6cfba50946a1.tar.bz2 linux-b265da5a45ce60bd3d7505cc0eaa6cfba50946a1.zip | |
arm64: perf: fix unassigned cpu_pmu->plat_device when probing PMU PPIs
Commit d795ef9aa831 ("arm64: perf: don't warn about missing
interrupt-affinity property for PPIs") added a check for PPIs so that
we avoid parsing the interrupt-affinity property for these naturally
affine interrupts.
Unfortunately, this check can trigger an early (successful) return and
we will not assign the value of cpu_pmu->plat_device. This patch fixes
the issue.
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/kernel/perf_event.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index 8af7784a8e35..b31e9a4b6275 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -1318,7 +1318,7 @@ static int armpmu_device_probe(struct platform_device *pdev) /* Don't bother with PPIs; they're already affine */ irq = platform_get_irq(pdev, 0); if (irq >= 0 && irq_is_percpu(irq)) - return 0; + goto out; irqs = kcalloc(pdev->num_resources, sizeof(*irqs), GFP_KERNEL); if (!irqs) @@ -1356,6 +1356,7 @@ static int armpmu_device_probe(struct platform_device *pdev) else kfree(irqs); +out: cpu_pmu->plat_device = pdev; return 0; } |