Commit 247c4050 authored May 05, 2015 by Christian König Committed by Alex Deucher May 07, 2015

drm/radeon: fix userptr lockup

We shouldn't try to reserve and wait for a BO that isn't bound. Otherwise
we can run into a deadlock if we have a fault during binding the BO.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent db12973c

drivers/gpu/drm/radeon/radeon_mn.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -142,6 +142,9 @@ static void radeon_mn_invalidate_range_start(struct mmu_notifier *mn,

		list_for_each_entry(bo, &node->bos, mn_list) {

		if (!bo->tbo.ttm \|\| bo->tbo.ttm->state != tt_bound)
		continue;

		r = radeon_bo_reserve(bo, true);
		if (r) {
		DRM_ERROR("(%ld) failed to reserve user bo\n", r);