Merge nommu tree

[karo-tx-linux.git] / drivers / w1 / w1_int.c

diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c
index b5a5e04b6d37fb172256595c3e905a22f3378d6c..68565aacec7bef30085a99c4786d93de2133660a 100644 (file)
--- a/drivers/w1/w1_int.c
+++ b/drivers/w1/w1_int.c
@@ -22,23 +22,15 @@
 #include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/delay.h>
+#include <linux/kthread.h>
 
 #include "w1.h"
 #include "w1_log.h"
 #include "w1_netlink.h"
+#include "w1_int.h"
 
 static u32 w1_ids = 1;
 
-extern struct device_driver w1_driver;
-extern struct bus_type w1_bus_type;
-extern struct device w1_device;
-extern int w1_max_slave_count;
-extern int w1_max_slave_ttl;
-extern struct list_head w1_masters;
-extern spinlock_t w1_mlock;
-
-extern int w1_process(void *);
-
 static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
                                       struct device_driver *driver,
                                       struct device *device)
@@ -65,7 +57,6 @@ static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
        dev->max_slave_count    = slave_count;
        dev->slave_count        = 0;
        dev->attempts           = 0;
-       dev->kpid               = -1;
        dev->initialized        = 0;
        dev->id                 = id;
        dev->slave_ttl          = slave_ttl;
@@ -76,9 +67,6 @@ static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
        INIT_LIST_HEAD(&dev->slist);
        init_MUTEX(&dev->mutex);
 
-       init_completion(&dev->dev_released);
-       init_completion(&dev->dev_exited);
-
        memcpy(&dev->dev, device, sizeof(struct device));
        snprintf(dev->dev.bus_id, sizeof(dev->dev.bus_id),
                  "w1_bus_master%u", dev->id);
@@ -86,19 +74,16 @@ static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
 
        dev->driver = driver;
 
-       dev->groups = 23;
+       dev->groups = 1;
        dev->seq = 1;
-       dev->nls = netlink_kernel_create(NETLINK_W1, NULL);
-       if (!dev->nls) {
-               printk(KERN_ERR "Failed to create new netlink socket(%u) for w1 master %s.\n",
-                       NETLINK_NFLOG, dev->dev.bus_id);
-       }
+       dev_init_netlink(dev);
 
        err = device_register(&dev->dev);
        if (err) {
                printk(KERN_ERR "Failed to register master device. err=%d\n", err);
-               if (dev->nls && dev->nls->sk_socket)
-                       sock_release(dev->nls->sk_socket);
+
+               dev_fini_netlink(dev);
+
                memset(dev, 0, sizeof(struct w1_master));
                kfree(dev);
                dev = NULL;
@@ -110,10 +95,6 @@ static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
 static void w1_free_dev(struct w1_master *dev)
 {
        device_unregister(&dev->dev);
-       if (dev->nls && dev->nls->sk_socket)
-               sock_release(dev->nls->sk_socket);
-       memset(dev, 0, sizeof(struct w1_master) + sizeof(struct w1_bus_master));
-       kfree(dev);
 }
 
 int w1_add_master_device(struct w1_bus_master *master)
@@ -129,16 +110,16 @@ int w1_add_master_device(struct w1_bus_master *master)
                return(-EINVAL);
         }
 
-       dev = w1_alloc_dev(w1_ids++, w1_max_slave_count, w1_max_slave_ttl, &w1_driver, &w1_device);
+       dev = w1_alloc_dev(w1_ids++, w1_max_slave_count, w1_max_slave_ttl, &w1_master_driver, &w1_master_device);
        if (!dev)
                return -ENOMEM;
 
-       dev->kpid = kernel_thread(&w1_process, dev, 0);
-       if (dev->kpid < 0) {
+       dev->thread = kthread_run(&w1_process, dev, "%s", dev->name);
+       if (IS_ERR(dev->thread)) {
+               retval = PTR_ERR(dev->thread);
                dev_err(&dev->dev,
                         "Failed to create new kernel thread. err=%d\n",
-                        dev->kpid);
-               retval = dev->kpid;
+                        retval);
                goto err_out_free_dev;
        }
 
@@ -155,20 +136,14 @@ int w1_add_master_device(struct w1_bus_master *master)
        spin_unlock(&w1_mlock);
 
        msg.id.mst.id = dev->id;
-       msg.id.mst.pid = dev->kpid;
+       msg.id.mst.pid = dev->thread->pid;
        msg.type = W1_MASTER_ADD;
        w1_netlink_send(dev, &msg);
 
        return 0;
 
 err_out_kill_thread:
-       set_bit(W1_MASTER_NEED_EXIT, &dev->flags);
-       if (kill_proc(dev->kpid, SIGTERM, 1))
-               dev_err(&dev->dev,
-                        "Failed to send signal to w1 kernel thread %d.\n",
-                        dev->kpid);
-       wait_for_completion(&dev->dev_exited);
-
+       kthread_stop(dev->thread);
 err_out_free_dev:
        w1_free_dev(dev);
 
@@ -177,18 +152,14 @@ err_out_free_dev:
 
 void __w1_remove_master_device(struct w1_master *dev)
 {
-       int err;
        struct w1_netlink_msg msg;
+       pid_t pid = dev->thread->pid;
 
        set_bit(W1_MASTER_NEED_EXIT, &dev->flags);
-       err = kill_proc(dev->kpid, SIGTERM, 1);
-       if (err)
-               dev_err(&dev->dev,
-                        "%s: Failed to send signal to w1 kernel thread %d.\n",
-                        __func__, dev->kpid);
+       kthread_stop(dev->thread);
 
        while (atomic_read(&dev->refcnt)) {
-               printk(KERN_INFO "Waiting for %s to become free: refcnt=%d.\n",
+               dev_info(&dev->dev, "Waiting for %s to become free: refcnt=%d.\n",
                                dev->name, atomic_read(&dev->refcnt));
 
                if (msleep_interruptible(1000))
@@ -196,7 +167,7 @@ void __w1_remove_master_device(struct w1_master *dev)
        }
 
        msg.id.mst.id = dev->id;
-       msg.id.mst.pid = dev->kpid;
+       msg.id.mst.pid = pid;
        msg.type = W1_MASTER_REMOVE;
        w1_netlink_send(dev, &msg);