ar71xx: add detailed interrupt statistics for the ag71xx driver

[openwrt.git] / target / linux / ar71xx / files / drivers / net / ag71xx / ag71xx_main.c

diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
index ebcb907..97a677c 100644 (file)
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
@@ -1,7 +1,7 @@
 /*
  *  Atheros AR71xx built-in ethernet mac driver
  *
- *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
+ *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
  *
  *  Based on Atheros' AG7100 driver
@@ -435,16 +435,12 @@ static void ag71xx_hw_stop(struct ag71xx *ag)
 static int ag71xx_open(struct net_device *dev)
 {
        struct ag71xx *ag = netdev_priv(dev);
-       int err;
+       int ret;
 
-       err = ag71xx_phy_connect(ag);
-       if (err)
+       ret = ag71xx_rings_init(ag);
+       if (ret)
                goto err;
 
-       err = ag71xx_rings_init(ag);
-       if (err)
-               goto err_ring_cleanup;
-
        napi_enable(&ag->napi);
 
        netif_carrier_off(dev);
@@ -461,10 +457,9 @@ static int ag71xx_open(struct net_device *dev)
 
        return 0;
 
- err_ring_cleanup:
-       ag71xx_rings_cleanup(ag);
  err:
-       return err;
+       ag71xx_rings_cleanup(ag);
+       return ret;
 }
 
 static int ag71xx_stop(struct net_device *dev)
@@ -487,7 +482,6 @@ static int ag71xx_stop(struct net_device *dev)
        spin_unlock_irqrestore(&ag->lock, flags);
 
        ag71xx_rings_cleanup(ag);
-       ag71xx_phy_disconnect(ag);
 
        return 0;
 }
@@ -801,6 +795,8 @@ static irqreturn_t ag71xx_interrupt(int irq, void *dev_id)
                napi_schedule(&ag->napi);
        }
 
+       ag71xx_debugfs_update_int_stats(ag, status);
+
        return IRQ_HANDLED;
 }
 
@@ -924,10 +920,22 @@ static int __init ag71xx_probe(struct platform_device *pdev)
 
        ag71xx_dump_regs(ag);
 
+       err = ag71xx_phy_connect(ag);
+       if (err)
+               goto err_unregister_netdev;
+
+       err = ag71xx_debugfs_init(ag);
+       if (err)
+               goto err_phy_disconnect;
+
        platform_set_drvdata(pdev, dev);
 
        return 0;
 
+ err_phy_disconnect:
+       ag71xx_phy_disconnect(ag);
+ err_unregister_netdev:
+       unregister_netdev(dev);
  err_free_irq:
        free_irq(dev->irq, dev);
  err_unmap_mii_ctrl:
@@ -948,6 +956,8 @@ static int __exit ag71xx_remove(struct platform_device *pdev)
        if (dev) {
                struct ag71xx *ag = netdev_priv(dev);
 
+               ag71xx_debugfs_exit(ag);
+               ag71xx_phy_disconnect(ag);
                unregister_netdev(dev);
                free_irq(dev->irq, dev);
                iounmap(ag->mii_ctrl);
@@ -971,10 +981,14 @@ static int __init ag71xx_module_init(void)
 {
        int ret;
 
-       ret = ag71xx_mdio_driver_init();
+       ret = ag71xx_debugfs_root_init();
        if (ret)
                goto err_out;
 
+       ret = ag71xx_mdio_driver_init();
+       if (ret)
+               goto err_debugfs_exit;
+
        ret = platform_driver_register(&ag71xx_driver);
        if (ret)
                goto err_mdio_exit;
@@ -983,6 +997,8 @@ static int __init ag71xx_module_init(void)
 
  err_mdio_exit:
        ag71xx_mdio_driver_exit();
+ err_debugfs_exit:
+       ag71xx_debugfs_root_exit();
  err_out:
        return ret;
 }
@@ -991,6 +1007,7 @@ static void __exit ag71xx_module_exit(void)
 {
        platform_driver_unregister(&ag71xx_driver);
        ag71xx_mdio_driver_exit();
+       ag71xx_debugfs_root_exit();
 }
 
 module_init(ag71xx_module_init);