swconfig: use a mutex instead of a spinlock, many swconfig calls sleep

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30952 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/generic/files/drivers/net/phy/swconfig.c b/target/linux/generic/files/drivers/net/phy/swconfig.c
index 1baccb1..e772c94 100644 (file)
--- a/target/linux/generic/files/drivers/net/phy/swconfig.c
+++ b/target/linux/generic/files/drivers/net/phy/swconfig.c
@@ -353,7 +353,7 @@ swconfig_get_dev(struct genl_info *info)
                break;
        }
        if (dev)
-               spin_lock(&dev->lock);
+               mutex_lock(&dev->sw_mutex);
        else
                DPRINTF("device %d not found\n", id);
        swconfig_unlock();
@@ -364,7 +364,7 @@ done:
 static inline void
 swconfig_put_dev(struct switch_dev *dev)
 {
-       spin_unlock(&dev->lock);
+       mutex_unlock(&dev->sw_mutex);
 }
 
 static int
@@ -962,7 +962,7 @@ register_switch(struct switch_dev *dev, struct net_device *netdev)
                        return -ENOMEM;
        }
        swconfig_defaults_init(dev);
-       spin_lock_init(&dev->lock);
+       mutex_init(&dev->sw_mutex);
        swconfig_lock();
        dev->id = ++swdev_id;
 
@@ -1000,11 +1000,11 @@ unregister_switch(struct switch_dev *dev)
 {
        swconfig_destroy_led_trigger(dev);
        kfree(dev->portbuf);
-       spin_lock(&dev->lock);
+       mutex_lock(&dev->sw_mutex);
        swconfig_lock();
        list_del(&dev->dev_list);
        swconfig_unlock();
-       spin_unlock(&dev->lock);
+       mutex_unlock(&dev->sw_mutex);
 }
 EXPORT_SYMBOL_GPL(unregister_switch);
 

diff --git a/target/linux/generic/files/include/linux/switch.h b/target/linux/generic/files/include/linux/switch.h
index 2c88bb3..4f4085e 100644 (file)
--- a/target/linux/generic/files/include/linux/switch.h
+++ b/target/linux/generic/files/include/linux/switch.h
@@ -191,7 +191,7 @@ struct switch_dev {
        struct list_head dev_list;
        unsigned long def_global, def_port, def_vlan;
 
-       spinlock_t lock;
+       struct mutex sw_mutex;
        struct switch_port *portbuf;
 
        char buf[128];