[PATCH v2 4/5] PM: Allow calling dev_pm_domain_set() with raw spinlock

[Sebastian Andrzej Siewior]

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 at redhat.com>
> Cc: Brian Masney <bmasney at redhat.com>
> Cc: linux-rt-users at vger.kernel.org
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>

Sebastian