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drm/amd: Flush GFXOFF requests in prepare stage
[ Upstream commit ca299b4 ] If the system hasn't entered GFXOFF when suspend starts it can cause hangs accessing GC and RLC during the suspend stage. Cc: <stable@vger.kernel.org> # 6.1.y: 5095d54 ("drm/amd: Evict resources during PM ops prepare() callback") Cc: <stable@vger.kernel.org> # 6.1.y: cb11ca3 ("drm/amd: Add concept of running prepare_suspend() sequence for IP blocks") Cc: <stable@vger.kernel.org> # 6.1.y: 2ceec37 ("drm/amd: Add missing kernel doc for prepare_suspend()") Cc: <stable@vger.kernel.org> # 6.1.y: 3a9626c ("drm/amd: Stop evicting resources on APUs in suspend") Cc: <stable@vger.kernel.org> # 6.6.y: 5095d54 ("drm/amd: Evict resources during PM ops prepare() callback") Cc: <stable@vger.kernel.org> # 6.6.y: cb11ca3 ("drm/amd: Add concept of running prepare_suspend() sequence for IP blocks") Cc: <stable@vger.kernel.org> # 6.6.y: 2ceec37 ("drm/amd: Add missing kernel doc for prepare_suspend()") Cc: <stable@vger.kernel.org> # 6.6.y: 3a9626c ("drm/amd: Stop evicting resources on APUs in suspend") Cc: <stable@vger.kernel.org> # 6.1+ Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3132 Fixes: ab47503 ("drm/amdgpu/sdma5.2: add begin/end_use ring callbacks") Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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