clocksource/drivers/timer-ti-dm: Unregister CPU PM notifier outside of the timer lock

omap_dm_timer_remove() calls cpu_pm_unregister_notifier() with
dm_timer_lock held and interrupts disabled. Nothing sleeps in there
today, but it pins the helper into a context where it can never be
allowed to sleep, which is in the way of restoring the RCU grace
period on the cpu_pm notifier chain.

Do the list lookup under the lock and move the unregister after the
unlock. Nothing can race it at that point: remove() owns the device,
and once the timer is off the list nobody can reach it anymore.

Signed-off-by: Bradley Morgan <include@grrlz.net>
Link: https://patch.msgid.link/20260813074343.26460-2-include@grrlz.net
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

0 files changed, 0 insertions, 0 deletions