Re: [PATCH] pinctrl: samsung: Save/restore eint_mask over suspend for EINT_TYPE GPIOs

[Krzysztof Kozlowski <krzk@kernel.org>]

On Sat, Apr 25, 2020 at 04:10:46PM -0700, Jonathan Bakker wrote:
> Currently, for EINT_TYPE GPIOs, the CON and FLTCON registers
> are saved and restored over a suspend/resume cycle.  However, the
> EINT_MASK registers are not.
> 
> On S5PV210 at the very least, these registers are not retained over
> suspend, leading to the interrupts remaining masked upon resume and
> therefore no interrupts being triggered for the device.  There should
> be no effect on any SoCs that do retain these registers as theoretically
> we would just be re-writing what was already there.
> 
> Signed-off-by: Jonathan Bakker <xc-racer2@live.ca>
> ---
>  drivers/pinctrl/samsung/pinctrl-exynos.c | 9 +++++++++
>  1 file changed, 9 insertions(+)

Exynos4412 (Odroid U3) also did not retain the register values. SD card
detect interrupt should be affected.

Thanks, applied (with CC-stable).

Best regards,
Krzysztof