Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/media/usb/gspca/sonixj.c b/drivers/media/usb/gspca/sonixj.c
index df8d848..2e1bd2d 100644
--- a/drivers/media/usb/gspca/sonixj.c
+++ b/drivers/media/usb/gspca/sonixj.c
@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Sonix sn9c102p sn9c105 sn9c120 (jpeg) subdriver
  *
  * Copyright (C) 2009-2011 Jean-François Moine <http://moinejf.free.fr>
  * Copyright (C) 2005 Michel Xhaard mxhaard@magic.fr
- *
- * 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
- * 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.
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -1171,6 +1162,11 @@
 	if (ret < 0) {
 		pr_err("reg_r err %d\n", ret);
 		gspca_dev->usb_err = ret;
+		/*
+		 * Make sure the buffer is zeroed to avoid uninitialized
+		 * values.
+		 */
+		memset(gspca_dev->usb_buf, 0, USB_BUF_SZ);
 	}
 }
 
@@ -2677,7 +2673,7 @@
 	 * which is 62 bytes long and is followed by various information
 	 * including statuses and luminosity.
 	 *
-	 * A marker may be splitted on two packets.
+	 * A marker may be split on two packets.
 	 *
 	 * The 6th byte of a marker contains the bits:
 	 *	0x08: USB full