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aqc111: fix double endianness swap on BE 

If you are using a function that does a swap in place,
you cannot just reuse the buffer on the assumption that it has
not been changed.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Oliver Neukum 2019-05-09 11:08:18 +02:00 committed by David S. Miller
parent 369b46e9fb
commit 2cf672709b
1 changed files with 4 additions and 2 deletions
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6
drivers/net/usb/aqc111.c
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@ -1428,7 +1428,7 @@ static int aqc111_resume(struct usb_interface *intf)
{
struct usbnet *dev = usb_get_intfdata(intf);
struct aqc111_data *aqc111_data = dev->driver_priv;
u16 reg16;
u16 reg16, oldreg16;
u8 reg8;
netif_carrier_off(dev->net);
@ -1444,9 +1444,11 @@ static int aqc111_resume(struct usb_interface *intf)
/* Configure RX control register => start operation */
reg16 = aqc111_data->rxctl;
reg16 &= ~SFR_RX_CTL_START;
/* needs to be saved in case endianness is swapped */
oldreg16 = reg16;
aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
reg16 |= SFR_RX_CTL_START;
reg16 = oldreg16 | SFR_RX_CTL_START;
aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
aqc111_set_phy_speed(dev, aqc111_data->autoneg,