fix the large PPS skew bug which is introduced by crazy run of bitslide module.

The bitslide module won't be reset when replugging the SFP and fiber, which may lead to the wrong bitslide.

fix the large PPS skew bug which is introduced by crazy run of bitslide module.
The bitslide module won't be reset when replugging the SFP and fiber, which may lead to the wrong bitslide.
fbfcfa5f · li hongming · Adam Wujek · aed1a0fa · fbfcfa5f
Commit fbfcfa5f authored Aug 28, 2018 by li hongming Committed by Adam Wujek Sep 21, 2018
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endpoint.c kernel/wr_nic/endpoint.c +5 -1

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--- a/kernel/wr_nic/endpoint.c
+++ b/kernel/wr_nic/endpoint.c
@@ -101,7 +101,8 @@ static void wrn_update_link_status(struct net_device *dev)
 {
 	struct wrn_ep *ep = netdev_priv(dev);
 	u32 ecr, bmsr, bmcr, lpa;
-
+	uint32_t value;
+	
 	bmsr = wrn_phy_read(dev, 0, MII_BMSR);
 	bmcr = wrn_phy_read(dev, 0, MII_BMCR);

@@ -112,6 +113,9 @@ static void wrn_update_link_status(struct net_device *dev)
 	if (!mii_link_ok(&ep->mii)) {
 		if(netif_carrier_ok(dev)) {
 			netif_carrier_off(dev);
+			/* Reset SFP */
+			value = wrn_phy_read(dev, 0, MII_BMCR);
+			wrn_phy_write(dev, 0, MII_BMCR, value | BMCR_RESET);
 			clear_bit(WRN_EP_UP, &ep->ep_flags);
 			printk(KERN_INFO "%s: Link down.\n", dev->name);
 			return;