winsys/radeon: fix killing the CS thread

Kill the thread only after we checked that it's not used any more, not before.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
index 69c42a07ea7d8ae6d140c434bc656f782aefe0f4..0a3b932a3af86d79cb553dc159f9eea6913c6efd 100644 (file)
--- a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
@@ -421,6 +421,10 @@ static void radeon_winsys_destroy(struct radeon_winsys *rws)
 {
     struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)rws;
 
+    if (!pipe_reference(&ws->base.reference, NULL)) {
+        return;
+    }
+
     if (ws->thread) {
         ws->kill_thread = 1;
         pipe_semaphore_signal(&ws->cs_queued);
@@ -429,10 +433,6 @@ static void radeon_winsys_destroy(struct radeon_winsys *rws)
     pipe_semaphore_destroy(&ws->cs_queued);
     pipe_condvar_destroy(ws->cs_queue_empty);
 
-    if (!pipe_reference(&ws->base.reference, NULL)) {
-        return;
-    }
-
     pipe_mutex_destroy(ws->hyperz_owner_mutex);
     pipe_mutex_destroy(ws->cmask_owner_mutex);
     pipe_mutex_destroy(ws->cs_stack_lock);