Re: [PATCH] PM: suspend: Do not call suspend_ops->begin()/end() for s2idle

[Claudiu Beznea <claudiu.beznea@kernel.org>]

On 10/5/26 14:11, Ovidiu Panait wrote:
> Commit 7602c0ec0bbf ("firmware: psci: Set
> pm_set_resume/suspend_via_firmware() for SYSTEM_SUSPEND") made
> psci_system_suspend_begin() call pm_set_suspend_via_firmware(), so that
> device drivers can prepare for the possible removal of the power before
> PSCI SYSTEM_SUSPEND.
> 
> Since then, on platforms where PSCI firmware supports SYSTEM_SUSPEND,
> pm_suspend_via_firmware() returns true during both s2ram and s2idle.
> This is inconsistent, since SYSTEM_SUSPEND is only invoked for s2ram.
> 
> This was observed while investigating PCI-related suspend/resume issues
> on Renesas platforms (RZ/G3S, RZ/V2H), and was traced to
> platform_suspend_begin() falling back to suspend_ops->begin() (PSCI in
> this case) when there is no s2idle_ops->begin() callback:
> 
>    platform_suspend_begin(PM_SUSPEND_TO_IDLE)
>      suspend_ops->begin()
>        psci_system_suspend_begin()
>          pm_set_suspend_via_firmware()
> 
> platform_resume_end() falls back to suspend_ops->end() in the same way.
> 
> Since s2idle has its own set of callbacks in s2idle_ops, make
> platform_suspend_begin() and platform_resume_end() only invoke those for
> s2idle, like the other platform_*() helpers do.
> 
> Signed-off-by: Ovidiu Panait<ovidiu.panait.rb@renesas.com>

Tested it on top of 
https://lore.kernel.org/all/20261007053645.1391545-1-claudiu.beznea@kernel.org

You can add:
Tested-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Should "Fixes:" tag be added as well?

Thank you,
Claudiu