drm/rockchip: Allow driver to be shutdown on reboot/kexec

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commit 7f3ef5dedb upstream.

Leaving the DRM driver enabled on reboot or kexec has the annoying
effect of leaving the display generating transactions whilst the
IOMMU has been shut down.

In turn, the IOMMU driver (which shares its interrupt line with
the VOP) starts warning either on shutdown or when entering the
secondary kernel in the kexec case (nothing is expected on that
front).

A cheap way of ensuring that things are nicely shut down is to
register a shutdown callback in the platform driver.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: Vicente Bergas <vicencb@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180805124807.18169-1-marc.zyngier@arm.com
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Marc Zyngier 2018-08-05 13:48:07 +01:00 • committed by Greg Kroah-Hartman

parent ccbc11b384

commit d56cc4f14b

1 changed files with 6 additions and 0 deletions

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drivers/gpu/drm/rockchip/rockchip_drm_drv.c

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