[PATCH] drivers/perf: Prevent forced unbinding of ARM_DMC620_PMU drivers - Linuxarm

2 Feb 2021

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@huawei.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

    