drm/amd/display: use GFP_NOWAIT for allocation in interrupt handler

commit 72a1eb3cf573ab957ae412f0efb0cf6ff0876234 upstream.

schedule_dc_vmin_vmax() is called by dm_crtc_high_irq(). Hence, we
cannot have the former sleep. Use GFP_NOWAIT for allocation in this
function.

Fixes: c210b757b400 ("drm/amd/display: fix dmub access race condition")
Cc: Mario Limonciello <[email protected]>
Cc: Alex Deucher <[email protected]>
Reviewed-by: Sun peng (Leo) Li <[email protected]>
Signed-off-by: Aurabindo Pillai <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit c04812cbe2f247a1c1e53a9b6c5e659963fe4065)
Cc: [email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Aurabindo Pillai

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -561,13 +561,13 @@ static void schedule_dc_vmin_vmax(struct amdgpu_device *adev,
 	struct dc_stream_state *stream,
 	struct dc_crtc_timing_adjust *adjust)
 {
-	struct vupdate_offload_work *offload_work = kzalloc(sizeof(*offload_work), GFP_KERNEL);
+	struct vupdate_offload_work *offload_work = kzalloc(sizeof(*offload_work), GFP_NOWAIT);
 	if (!offload_work) {
 		drm_dbg_driver(adev_to_drm(adev), "Failed to allocate vupdate_offload_work\n");
 		return;
 	}
 
-	struct dc_crtc_timing_adjust *adjust_copy = kzalloc(sizeof(*adjust_copy), GFP_KERNEL);
+	struct dc_crtc_timing_adjust *adjust_copy = kzalloc(sizeof(*adjust_copy), GFP_NOWAIT);
 	if (!adjust_copy) {
 		drm_dbg_driver(adev_to_drm(adev), "Failed to allocate adjust_copy\n");
 		kfree(offload_work);