net: ppp: use {get,put}_unaligned_be{16,32}
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Reviewed-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ppp_async.c b/drivers/net/ppp_async.c
index 78d70a6..a1b82c9 100644
--- a/drivers/net/ppp_async.c
+++ b/drivers/net/ppp_async.c
@@ -32,6 +32,7 @@
#include <linux/init.h>
#include <linux/jiffies.h>
#include <linux/slab.h>
+#include <asm/unaligned.h>
#include <asm/uaccess.h>
#include <asm/string.h>
@@ -542,7 +543,7 @@
data = ap->tpkt->data;
count = ap->tpkt->len;
fcs = ap->tfcs;
- proto = (data[0] << 8) + data[1];
+ proto = get_unaligned_be16(data);
/*
* LCP packets with code values between 1 (configure-reqest)
@@ -963,7 +964,7 @@
code = data[0];
if (code != CONFACK && code != CONFREQ)
return;
- dlen = (data[2] << 8) + data[3];
+ dlen = get_unaligned_be16(data + 2);
if (len < dlen)
return; /* packet got truncated or length is bogus */
@@ -997,15 +998,14 @@
while (dlen >= 2 && dlen >= data[1] && data[1] >= 2) {
switch (data[0]) {
case LCP_MRU:
- val = (data[2] << 8) + data[3];
+ val = get_unaligned_be16(data + 2);
if (inbound)
ap->mru = val;
else
ap->chan.mtu = val;
break;
case LCP_ASYNCMAP:
- val = (data[2] << 24) + (data[3] << 16)
- + (data[4] << 8) + data[5];
+ val = get_unaligned_be32(data + 2);
if (inbound)
ap->raccm = val;
else