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Date: Tue, 2 Feb 2021 15:58:06 +0800
From: Qi Liu <liuqi115@...wei.com>
To: <will@...nel.org>, <mark.rutland@....com>
CC: <linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <linuxarm@...neuler.org>
Subject: [PATCH] drivers/perf: Prevent forced unbinding of ARM_DMC620_PMU drivers
Set "suppress_bind_attrs" to true, so that bind/unbind can be
disabled via sysfs and prevent unbinding ARM_DMC620_PMU drivers
during perf sampling.
Signed-off-by: Qi Liu <liuqi115@...wei.com>
---
drivers/perf/arm_dmc620_pmu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/perf/arm_dmc620_pmu.c b/drivers/perf/arm_dmc620_pmu.c
index 27f54c0..66ad5b3 100644
--- a/drivers/perf/arm_dmc620_pmu.c
+++ b/drivers/perf/arm_dmc620_pmu.c
@@ -717,6 +717,7 @@ static struct platform_driver dmc620_pmu_driver = {
.driver = {
.name = DMC620_DRVNAME,
.acpi_match_table = dmc620_acpi_match,
+ .suppress_bind_attrs = true,
},
.probe = dmc620_pmu_device_probe,
.remove = dmc620_pmu_device_remove,
--
2.8.1
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