Re: [RFT PATCH 01/15] drm/armada: Call drm_atomic_helper_shutdown() at shutdown time

[Russell King (Oracle)]

On Fri, Sep 01, 2023 at 04:41:12PM -0700, Douglas Anderson wrote:
> Based on grepping through the source code this driver appears to be
> missing a call to drm_atomic_helper_shutdown() at system shutdown
> time. Among other things, this means that if a panel is in use that it
> won't be cleanly powered off at system shutdown time.
> 
> The fact that we should call drm_atomic_helper_shutdown() in the case
> of OS shutdown/restart comes straight out of the kernel doc "driver
> instance overview" in drm_drv.c.
> 
> This driver was fairly easy to update. The drm_device is stored in the
> drvdata so we just have to make sure the drvdata is NULL whenever the
> device is not bound. To make things simpler,
> drm_atomic_helper_shutdown() has been modified to consider a NULL
> drm_device as a noop in the patch ("drm/atomic-helper:
> drm_atomic_helper_shutdown(NULL) should be a noop").
> 
> Suggested-by: Maxime Ripard <mripard@xxxxxxxxxx>
> Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>

As the listed driver author for the reasons I've stated - NAK.

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