drm/amd/display: Fix hang when skipping modeset
commit da5e14909776edea4462672fb4a3007802d262e7 upstream. [Why&How] When skipping full modeset since the only state change was a front porch change, the DC commit sequence requires extra checks to handle non existant plane states being asked to be removed from context. Reviewed-by:Alvin Lee <Alvin.Lee2@amd.com> Acked-by:
Qingqing Zhuo <qingqing.zhuo@amd.com> Signed-off-by:
Aurabindo Pillai <aurabindo.pillai@amd.com> Tested-by:
Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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