[PATCH net-next] tg3: copy only needed fields from userspace-provided EEE data

[Heiner Kallweit <hkallweit1@gmail.com>]

The current code overwrites fields in tp->eee with unchecked data from
edata, e.g. the bitmap with supported modes. ethtool properly returns
the received data from get_eee() call, but we have no guarantee that
other users of the ioctl set_eee() interface behave properly too.
Therefore copy only fields which are actually needed.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
 drivers/net/ethernet/broadcom/tg3.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 51685cd29..7a07c5216 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -14200,7 +14200,9 @@ static int tg3_set_eee(struct net_device *dev, struct ethtool_keee *edata)
 		return -EINVAL;
 	}
 
-	tp->eee = *edata;
+	tp->eee.eee_enabled = edata->eee_enabled;
+	tp->eee.tx_lpi_enabled = edata->tx_lpi_enabled;
+	tp->eee.tx_lpi_timer = edata->tx_lpi_timer;
 
 	tp->phy_flags |= TG3_PHYFLG_USER_CONFIGURED;
 	tg3_warn_mgmt_link_flap(tp);
-- 
2.43.2