Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/clk/imx/clk-cpu.c b/drivers/clk/imx/clk-cpu.c
index 9d46eac..cb182be 100644
--- a/drivers/clk/imx/clk-cpu.c
+++ b/drivers/clk/imx/clk-cpu.c
@@ -1,12 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2014 Lucas Stach <l.stach@pengutronix.de>, Pengutronix
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
  */
 
 #include <linux/clk.h>
@@ -75,13 +69,14 @@
 	.set_rate	= clk_cpu_set_rate,
 };
 
-struct clk *imx_clk_cpu(const char *name, const char *parent_name,
+struct clk_hw *imx_clk_hw_cpu(const char *name, const char *parent_name,
 		struct clk *div, struct clk *mux, struct clk *pll,
 		struct clk *step)
 {
 	struct clk_cpu *cpu;
-	struct clk *clk;
+	struct clk_hw *hw;
 	struct clk_init_data init;
+	int ret;
 
 	cpu = kzalloc(sizeof(*cpu), GFP_KERNEL);
 	if (!cpu)
@@ -94,15 +89,18 @@
 
 	init.name = name;
 	init.ops = &clk_cpu_ops;
-	init.flags = 0;
+	init.flags = CLK_IS_CRITICAL;
 	init.parent_names = &parent_name;
 	init.num_parents = 1;
 
 	cpu->hw.init = &init;
+	hw = &cpu->hw;
 
-	clk = clk_register(NULL, &cpu->hw);
-	if (IS_ERR(clk))
+	ret = clk_hw_register(NULL, hw);
+	if (ret) {
 		kfree(cpu);
+		return ERR_PTR(ret);
+	}
 
-	return clk;
+	return hw;
 }