Messages in this thread | | | Date | Thu, 12 Jan 2023 12:13:20 +0100 | From | Sebastian Andrzej Siewior <> | Subject | Re: [PATCH v2 4/5] PM: Allow calling dev_pm_domain_set() with raw spinlock |
| |
On 2022-12-19 16:15:02 [+0100], Krzysztof Kozlowski wrote: > device_pm_check_callbacks() uses dev->power spinlock, which on > PREEMPT_RT sleeps. However some PM domains on PREEMPT_RT might be using > raw spinlocks as genpd_lock(), thus dev_pm_domain_set() must not call > device_pm_check_callbacks(). In fact device_pm_check_callbacks() is not > strictly related to dev_pm_domain_set() and calls for these two can be > made separately. > > Add new helper dev_pm_domain_set_no_cb() which will only set PM domain > but will not check the callbacks, leaving the checl to the caller.
s/checl/check/ But this I comprehend.
> Cc: Adrien Thierry <athierry@redhat.com> > Cc: Brian Masney <bmasney@redhat.com> > Cc: linux-rt-users@vger.kernel.org > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Sebastian
| |