drm/i915: Also perform gpu reset under execlist mode.
It is found that i915 will not reset gpu under execlist mode when unload module. that will lead to some issues when unload/load module with different submission mode. e.g. from execlist mode to ring buffer mode via loading/unloading i915. Because HW is not in a reset state and registers are not clean under such condition. Signed-off-by: NNiu,Bing <bing.niu@intel.com> Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk> Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
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