From patchwork series 497668

https://patchwork.ozlabs.org//project/linuxppc-dev/list/?series=497668

Author: Fox Snowpatch

drivers/soc/fsl/qe/qe.c

@@ -86,8 +86,12 @@ static phys_addr_t get_qe_base(void)
 
 void qe_reset(void)
 {
-	if (qe_immr == NULL)
+	if (qe_immr == NULL) {
 		qe_immr = ioremap(get_qe_base(), QE_IMMAP_SIZE);
+		if (qe_immr == NULL) {
+			panic("QE:ioremap failed!");
+		}
+	}
 
 	qe_snums_init();