Files
linux/drivers/gpu/drm/tegra
Nicolin Chen 9371b7119d drm/tegra: hub: Do not enable orphaned window group
[ Upstream commit ef4e417eb3 ]

Though the unconditional enable/disable code is not a final solution,
we don't want to run into a NULL pointer situation when window group
doesn't link to its DC parent if the DC is disabled in Device Tree.

So this patch simply adds a check to make sure that window group has
a valid parent before running into tegra_windowgroup_enable/disable.

Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-07-16 08:17:21 +02:00
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