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path: root/drivers/usb/wusbcore/security.c
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Diffstat (limited to 'drivers/usb/wusbcore/security.c')
-rw-r--r--drivers/usb/wusbcore/security.c25
1 files changed, 5 insertions, 20 deletions
diff --git a/drivers/usb/wusbcore/security.c b/drivers/usb/wusbcore/security.c
index 170f2c38de9b..33d2f5d7f33b 100644
--- a/drivers/usb/wusbcore/security.c
+++ b/drivers/usb/wusbcore/security.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Wireless USB Host Controller
* Security support: encryption enablement, etc
@@ -5,21 +6,6 @@
* Copyright (C) 2006 Intel Corporation
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
*
- * 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.
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
* FIXME: docs
*/
#include <linux/types.h>
@@ -28,6 +14,7 @@
#include <linux/random.h>
#include <linux/export.h>
#include "wusbhc.h"
+#include <asm/unaligned.h>
static void wusbhc_gtk_rekey_work(struct work_struct *work);
@@ -367,7 +354,6 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
struct usb_device *usb_dev = wusb_dev->usb_dev;
struct device *dev = &usb_dev->dev;
u32 tkid;
- __le32 tkid_le;
struct usb_handshake *hs;
struct aes_ccm_nonce ccm_n;
u8 mic[8];
@@ -385,11 +371,10 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
goto error_dev_set_encryption;
tkid = wusbhc_next_tkid(wusbhc, wusb_dev);
- tkid_le = cpu_to_le32(tkid);
hs[0].bMessageNumber = 1;
hs[0].bStatus = 0;
- memcpy(hs[0].tTKID, &tkid_le, sizeof(hs[0].tTKID));
+ put_unaligned_le32(tkid, hs[0].tTKID);
hs[0].bReserved = 0;
memcpy(hs[0].CDID, &wusb_dev->cdid, sizeof(hs[0].CDID));
get_random_bytes(&hs[0].nonce, sizeof(hs[0].nonce));
@@ -441,7 +426,7 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
/* Setup the CCM nonce */
memset(&ccm_n.sfn, 0, sizeof(ccm_n.sfn)); /* Per WUSB1.0[6.5.2] */
- memcpy(ccm_n.tkid, &tkid_le, sizeof(ccm_n.tkid));
+ put_unaligned_le32(tkid, ccm_n.tkid);
ccm_n.src_addr = wusbhc->uwb_rc->uwb_dev.dev_addr;
ccm_n.dest_addr.data[0] = wusb_dev->addr;
ccm_n.dest_addr.data[1] = 0;
@@ -472,7 +457,7 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
/* Send Handshake3 */
hs[2].bMessageNumber = 3;
hs[2].bStatus = 0;
- memcpy(hs[2].tTKID, &tkid_le, sizeof(hs[2].tTKID));
+ put_unaligned_le32(tkid, hs[2].tTKID);
hs[2].bReserved = 0;
memcpy(hs[2].CDID, &wusb_dev->cdid, sizeof(hs[2].CDID));
memcpy(hs[2].nonce, hs[0].nonce, sizeof(hs[2].nonce));