drm/radeon: allow concurrent buffer reads

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index ec4840c..f662de4 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -183,7 +183,7 @@
 		}
 
 		p->relocs[i].tv.bo = &p->relocs[i].robj->tbo;
-		p->relocs[i].tv.shared = false;
+		p->relocs[i].tv.shared = !r->write_domain;
 		p->relocs[i].handle = r->handle;
 
 		radeon_cs_buckets_add(&buckets, &p->relocs[i].tv.head,
@@ -260,7 +260,8 @@
 			continue;
 
 		resv = p->relocs[i].robj->tbo.resv;
-		radeon_semaphore_sync_resv(p->ib.semaphore, resv, false);
+		radeon_semaphore_sync_resv(p->ib.semaphore, resv,
+					   p->relocs[i].tv.shared);
 	}
 }