perf/arm: Add missing .suppress_bind_attrs

[ Upstream commit 860a831de138a7ad6bc86019adaf10eb84c02655 ]

PMU drivers should set .suppress_bind_attrs so that userspace is denied
the opportunity to pull the driver out from underneath an in-use PMU
(with predictably unpleasant consequences). Somehow both the CMN and NI
drivers have managed to miss this; put that right.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Leo Yan <leo.yan@arm.com>
Link: https://lore.kernel.org/r/acd48c341b33b96804a3969ee00b355d40c546e2.1751465293.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c
index 031d45d0fe3db67d4bcb302918e2e112561785d2..d1df2f3adbc5186e3403b5546cd0f3f8e9c2bb2a 100644 (file)
--- a/drivers/perf/arm-cmn.c
+++ b/drivers/perf/arm-cmn.c
@@ -2655,6 +2655,7 @@ static struct platform_driver arm_cmn_driver = {
                .name = "arm-cmn",
                .of_match_table = of_match_ptr(arm_cmn_of_match),
                .acpi_match_table = ACPI_PTR(arm_cmn_acpi_match),
+               .suppress_bind_attrs = true,
        },
        .probe = arm_cmn_probe,
        .remove = arm_cmn_remove,

diff --git a/drivers/perf/arm-ni.c b/drivers/perf/arm-ni.c
index 9396d243415f480060e36abcdd8f32d680700fe7..c30a67fe2ae3ce364fa9821d8e9640f2382306a6 100644 (file)
--- a/drivers/perf/arm-ni.c
+++ b/drivers/perf/arm-ni.c
@@ -709,6 +709,7 @@ static struct platform_driver arm_ni_driver = {
                .name = "arm-ni",
                .of_match_table = of_match_ptr(arm_ni_of_match),
                .acpi_match_table = ACPI_PTR(arm_ni_acpi_match),
+               .suppress_bind_attrs = true,
        },
        .probe = arm_ni_probe,
        .remove = arm_ni_remove,