diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index 14cc88a..d99dbb6 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -666,7 +666,7 @@ static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg)
 	if (arg == ATOM_UNIT_MICROSEC)
 		udelay(count);
 	else
-		msleep(count);
+		mdelay(count);
 }
 
 static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg)