[PATCH 03/14] i2c: omap: wakeup the controller during suspend callback
Andy Shevchenko
andy.shevchenko at gmail.com
Mon Jan 15 12:03:46 PST 2024
On Mon, Jan 15, 2024 at 6:16 PM Thomas Richard
<thomas.richard at bootlin.com> wrote:
>
> A device may need the controller up during suspend_noirq or
> resume_noirq.
> But if the controller is autosuspended, there is no way to wakeup it
> during suspend_noirq or resume_noirq because runtime pm is disabled
> at this time.
>
> The suspend callback wakes up the controller, so it is available until
> its suspend_noirq callback (pm_runtime_force_suspend).
> During the resume, it's restored by resume_noirq callback
> (pm_runtime_force_resume). Then resume callback enables autosuspend.
>
> So the controller is up during a little time slot in suspend and resume
> sequences even if it's not used.
Same comment
->...callback...()
...
> }
>
> +
Stray blank line is added.
> +static int omap_i2c_suspend(struct device *dev)
--
With Best Regards,
Andy Shevchenko
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