From: Tuan Phan <tuanphan@os.amperecomputing.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
patches@amperecomputing.com, Will Deacon <will@kernel.org>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/2] perf: dsu: Allow multiple devices share same IRQ.
Date: Tue, 17 Mar 2020 17:26:15 -0700 [thread overview]
Message-ID: <1584491176-31358-1-git-send-email-tuanphan@os.amperecomputing.com> (raw)
Add IRQF_SHARED flag when register IRQ such that multiple dsu
devices can share same IRQ.
Signed-off-by: Tuan Phan <tuanphan@os.amperecomputing.com>
---
drivers/perf/arm_dsu_pmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/perf/arm_dsu_pmu.c b/drivers/perf/arm_dsu_pmu.c
index 70968c8..2622900 100644
--- a/drivers/perf/arm_dsu_pmu.c
+++ b/drivers/perf/arm_dsu_pmu.c
@@ -700,7 +700,7 @@ static int dsu_pmu_device_probe(struct platform_device *pdev)
if (!name)
return -ENOMEM;
rc = devm_request_irq(&pdev->dev, irq, dsu_pmu_handle_irq,
- IRQF_NOBALANCING, name, dsu_pmu);
+ IRQF_NOBALANCING | IRQF_SHARED, name, dsu_pmu);
if (rc) {
dev_warn(&pdev->dev, "Failed to request IRQ %d\n", irq);
return rc;
--
2.7.4
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next reply other threads:[~2020-03-18 0:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-18 0:26 Tuan Phan [this message]
2020-03-18 20:57 ` [PATCH 1/2] perf: dsu: Allow multiple devices share same IRQ Will Deacon
2020-03-19 14:32 ` Mark Rutland
2020-03-19 14:35 ` Mark Rutland
2020-03-19 16:12 ` Robin Murphy
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