Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/char/bsr.c b/drivers/char/bsr.c
index a6cef54..e5e5333 100644
--- a/drivers/char/bsr.c
+++ b/drivers/char/bsr.c
@@ -1,22 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /* IBM POWER Barrier Synchronization Register Driver
  *
  * Copyright IBM Corporation 2008
  *
  * Author: Sonny Rao <sonnyrao@us.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
 #include <linux/kernel.h>
@@ -147,7 +134,7 @@
 	return 0;
 }
 
-static int bsr_open(struct inode * inode, struct file * filp)
+static int bsr_open(struct inode *inode, struct file *filp)
 {
 	struct cdev *cdev = inode->i_cdev;
 	struct bsr_dev *dev = container_of(cdev, struct bsr_dev, bsr_cdev);
@@ -322,7 +309,8 @@
 		goto out_err_2;
 	}
 
-	if ((ret = bsr_create_devs(np)) < 0) {
+	ret = bsr_create_devs(np);
+	if (ret < 0) {
 		np = NULL;
 		goto out_err_3;
 	}