tlan: Add PHY reset timeout
Add a timeout to prevent infinite loop waiting for PHY to reset.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/ti/tlan.c b/drivers/net/ethernet/ti/tlan.c
index c4021de..8278150 100644
--- a/drivers/net/ethernet/ti/tlan.c
+++ b/drivers/net/ethernet/ti/tlan.c
@@ -2568,6 +2568,7 @@
struct tlan_priv *priv = netdev_priv(dev);
u16 phy;
u16 value;
+ unsigned long timeout = jiffies + HZ;
phy = priv->phy[priv->phy_num];
@@ -2575,9 +2576,13 @@
tlan_mii_sync(dev->base_addr);
value = MII_GC_LOOPBK | MII_GC_RESET;
tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
- tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
- while (value & MII_GC_RESET)
+ do {
tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
+ if (time_after(jiffies, timeout)) {
+ netdev_err(dev, "PHY reset timeout\n");
+ return;
+ }
+ } while (value & MII_GC_RESET);
/* Wait for 500 ms and initialize.
* I don't remember why I wait this long.