1 files changed, 18 insertions, 27 deletions

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index f18ab8e220db..c458c030fadf 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -2115,33 +2115,8 @@ static void lan78xx_remove_mdio(struct lan78xx_net *dev)
 static void lan78xx_link_status_change(struct net_device *net)
 {
 	struct phy_device *phydev = net->phydev;
-	int temp;
-
-	/* At forced 100 F/H mode, chip may fail to set mode correctly
-	 * when cable is switched between long(~50+m) and short one.
-	 * As workaround, set to 10 before setting to 100
-	 * at forced 100 F/H mode.
-	 */
-	if (!phydev->autoneg && (phydev->speed == 100)) {
-		/* disable phy interrupt */
-		temp = phy_read(phydev, LAN88XX_INT_MASK);
-		temp &= ~LAN88XX_INT_MASK_MDINTPIN_EN_;
-		phy_write(phydev, LAN88XX_INT_MASK, temp);
 
-		temp = phy_read(phydev, MII_BMCR);
-		temp &= ~(BMCR_SPEED100 | BMCR_SPEED1000);
-		phy_write(phydev, MII_BMCR, temp); /* set to 10 first */
-		temp |= BMCR_SPEED100;
-		phy_write(phydev, MII_BMCR, temp); /* set to 100 later */
-
-		/* clear pending interrupt generated while workaround */
-		temp = phy_read(phydev, LAN88XX_INT_STS);
-
-		/* enable phy interrupt back */
-		temp = phy_read(phydev, LAN88XX_INT_MASK);
-		temp |= LAN88XX_INT_MASK_MDINTPIN_EN_;
-		phy_write(phydev, LAN88XX_INT_MASK, temp);
-	}
+	phy_print_status(phydev);
 }
 
 static int irq_map(struct irq_domain *d, unsigned int irq,
@@ -3604,13 +3579,29 @@ static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb,
 		size = (rx_cmd_a & RX_CMD_A_LEN_MASK_);
 		align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
 
+		if (unlikely(size > skb->len)) {
+			netif_dbg(dev, rx_err, dev->net,
+				  "size err rx_cmd_a=0x%08x\n",
+				  rx_cmd_a);
+			return 0;
+		}
+
 		if (unlikely(rx_cmd_a & RX_CMD_A_RED_)) {
 			netif_dbg(dev, rx_err, dev->net,
 				  "Error rx_cmd_a=0x%08x", rx_cmd_a);
 		} else {
-			u32 frame_len = size - ETH_FCS_LEN;
+			u32 frame_len;
 			struct sk_buff *skb2;
 
+			if (unlikely(size < ETH_FCS_LEN)) {
+				netif_dbg(dev, rx_err, dev->net,
+					  "size err rx_cmd_a=0x%08x\n",
+					  rx_cmd_a);
+				return 0;
+			}
+
+			frame_len = size - ETH_FCS_LEN;
+
 			skb2 = napi_alloc_skb(&dev->napi, frame_len);
 			if (!skb2)
 				return 0;