rb532: check the link status with a timer

SVN-Revision: 15765

target/linux/rb532/patches-2.6.28/100-check_media.patch

@@ -0,0 +1,51 @@
+--- a/drivers/net/korina.c
++++ b/drivers/net/korina.c
+@@ -133,6 +133,7 @@ struct korina_private {
+ 	int dma_halt_cnt;
+ 	int dma_run_cnt;
+ 	struct napi_struct napi;
++	struct timer_list media_check_timer;
+ 	struct mii_if_info mii_if;
+ 	struct net_device *dev;
+ 	int phy_addr;
+@@ -663,6 +664,15 @@ static void korina_check_media(struct ne
+ 						&lp->eth_regs->ethmac2);
+ }
+ 
++static void korina_poll_media(unsigned long data)
++{
++	struct net_device *dev = (struct net_device *) data;
++	struct korina_private *lp = netdev_priv(dev);
++
++	korina_check_media(dev, 0);
++	mod_timer(&lp->media_check_timer, jiffies + HZ);
++}
++
+ static void korina_set_carrier(struct mii_if_info *mii)
+ {
+ 	if (mii->force_media) {
+@@ -1034,6 +1044,7 @@ static int korina_open(struct net_device
+ 		    dev->name, lp->und_irq);
+ 		goto err_free_ovr_irq;
+ 	}
++	mod_timer(&lp->media_check_timer, jiffies + 1);
+ out:
+ 	return ret;
+ 
+@@ -1053,6 +1064,8 @@ static int korina_close(struct net_devic
+ 	struct korina_private *lp = netdev_priv(dev);
+ 	u32 tmp;
+ 
++	del_timer(&lp->media_check_timer);
++
+ 	/* Disable interrupts */
+ 	disable_irq(lp->rx_irq);
+ 	disable_irq(lp->tx_irq);
+@@ -1177,6 +1190,7 @@ static int korina_probe(struct platform_
+ 			": cannot register net device %d\n", rc);
+ 		goto probe_err_register;
+ 	}
++	setup_timer(&lp->media_check_timer, korina_poll_media, (unsigned long) dev);
+ out:
+ 	return rc;
+