diff options
| author | Robin Murphy <robin.murphy@arm.com> | 2025-07-02 15:08:13 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-20 18:41:12 +0200 |
| commit | f9eec6b8dad107d4451ca09a485e710f6351676b (patch) | |
| tree | c73fccc46d9f2a09cc95dd87781097c42e35fb05 | |
| parent | d5386bcede7b57b193c658dcbb9d22004cde7580 (diff) | |
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>
| -rw-r--r-- | drivers/perf/arm-cmn.c | 1 | ||||
| -rw-r--r-- | drivers/perf/arm-ni.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index 031d45d0fe3d..d1df2f3adbc5 100644 --- 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 9396d243415f..c30a67fe2ae3 100644 --- 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, |