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authorOliver Neukum <oneukum@suse.com>2019-05-09 12:08:16 +0300
committerDavid S. Miller <davem@davemloft.net>2019-05-09 19:35:40 +0300
commitb8b277525e9df2fd2dc3d1f4fe01c6796bb107fc (patch)
treed4c2af4b3e7545a1b0d5092264daf41fbdd9245c
parent873017af778439f2f8e3d87f28ddb1fcaf244a76 (diff)
downloadlinux-b8b277525e9df2fd2dc3d1f4fe01c6796bb107fc.tar.xz
aqc111: fix endianness issue in aqc111_change_mtu
If the MTU is large enough, the first write to the device is just repeated. On BE architectures, however, the first word of the command will be swapped a second time and garbage will be written. Avoid that. Signed-off-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/usb/aqc111.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/usb/aqc111.c b/drivers/net/usb/aqc111.c
index aff995be2a31..408df2d335e3 100644
--- a/drivers/net/usb/aqc111.c
+++ b/drivers/net/usb/aqc111.c
@@ -453,6 +453,8 @@ static int aqc111_change_mtu(struct net_device *net, int new_mtu)
reg16 = 0x1420;
else if (dev->net->mtu <= 16334)
reg16 = 0x1A20;
+ else
+ return 0;
aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_PAUSE_WATERLVL_LOW,
2, &reg16);