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| author | Florian Fainelli <florian@openwrt.org> | 2012-08-02 18:13:17 +0000 |
|---|---|---|
| committer | Florian Fainelli <florian@openwrt.org> | 2012-08-02 18:13:17 +0000 |
| commit | 162e272b4b2b770cd5eb97006bb4ff99b09bd8de (patch) | |
| tree | f866a780195866de338987d94cd8bf4ce7c4ae61 | |
| parent | f45132d1d444ec33df3938e3e2a78ebee750ed8b (diff) | |
| download | upstream-162e272b4b2b770cd5eb97006bb4ff99b09bd8de.tar.gz upstream-162e272b4b2b770cd5eb97006bb4ff99b09bd8de.tar.bz2 upstream-162e272b4b2b770cd5eb97006bb4ff99b09bd8de.zip | |
nuport-mac: properly protect the phy interrupt handler
SVN-Revision: 32951
| -rw-r--r-- | target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c b/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c index 657fb6a646..794987f73b 100644 --- a/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c +++ b/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c @@ -422,19 +422,25 @@ static irqreturn_t nuport_mac_link_interrupt(int irq, void *dev_id) struct nuport_mac_priv *priv = netdev_priv(dev); u32 reg; u8 phy_addr; + unsigned long flags; + irqreturn_t ret = IRQ_HANDLED; + spin_lock_irqsave(&priv->lock, flags); reg = nuport_mac_readl(LINK_INT_CSR); phy_addr = (reg >> LINK_PHY_ADDR_SHIFT) & (PHY_MAX_ADDR - 1); if (phy_addr != priv->phydev->addr) { netdev_err(dev, "spurious PHY irq (phy: %d)\n", phy_addr); - return IRQ_NONE; + ret = IRQ_NONE; + goto out; } priv->phydev->link = (reg & LINK_UP); nuport_mac_adjust_link(dev); - return IRQ_HANDLED; +out: + spin_unlock_irqrestore(&priv->lock, flags); + return ret; } static irqreturn_t nuport_mac_tx_interrupt(int irq, void *dev_id) |