]> git.baikalelectronics.ru Git - kernel.git/commit
perf/arm-cmn: Fix CPU hotplug unregistration
authorRobin Murphy <robin.murphy@arm.com>
Fri, 3 Dec 2021 11:44:50 +0000 (11:44 +0000)
committerWill Deacon <will@kernel.org>
Tue, 14 Dec 2021 12:09:27 +0000 (12:09 +0000)
commit0dad6dea9689c29725e72502cf1b294f08a570c0
tree72af50c25ba36c18f9505c6f8bd10426d91eefdc
parentff04131966d1a79c1b3cf26997a8e7d1433f1b7d
perf/arm-cmn: Fix CPU hotplug unregistration

Attempting to migrate the PMU context after we've unregistered the PMU
device, or especially if we never successfully registered it in the
first place, is a woefully bad idea. It's also fundamentally pointless
anyway. Make sure to unregister an instance from the hotplug handler
*without* invoking the teardown callback.

Fixes: 5ec3c36acf9d ("perf: Add Arm CMN-600 PMU driver")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/2c221d745544774e4b07583b65b5d4d94f7e0fe4.1638530442.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
drivers/perf/arm-cmn.c