4 files changed, 22 insertions, 21 deletions

diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index e7b4187da05..6695a51e09e 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -40,7 +40,6 @@
 #include <linux/if_arp.h>
 #include <linux/ip.h>
 #include <linux/tcp.h>
-#include <linux/smp_lock.h>
 #include <linux/spinlock.h>
 #include <linux/rwsem.h>
 #include <linux/stddef.h>
@@ -180,6 +179,7 @@ struct channel {
  * channel.downl.
  */
 
+static DEFINE_MUTEX(ppp_mutex);
 static atomic_t ppp_unit_count = ATOMIC_INIT(0);
 static atomic_t channel_count = ATOMIC_INIT(0);
 
@@ -362,7 +362,6 @@ static const int npindex_to_ethertype[NUM_NP] = {
  */
 static int ppp_open(struct inode *inode, struct file *file)
 {
-        cycle_kernel_lock();
         /*
          * This could (should?) be enforced by the permissions on /dev/ppp.
          */
@@ -582,7 +581,7 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                  * this fd and reopening /dev/ppp.
                  */
                 err = -EINVAL;
-                lock_kernel();
+                mutex_lock(&ppp_mutex);
                 if (pf->kind == INTERFACE) {
                         ppp = PF_TO_PPP(pf);
                         if (file == ppp->owner)
@@ -594,7 +593,7 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                 } else
                         printk(KERN_DEBUG "PPPIOCDETACH file->f_count=%ld\n",
                                atomic_long_read(&file->f_count));
-                unlock_kernel();
+                mutex_unlock(&ppp_mutex);
                 return err;
         }
 
@@ -602,7 +601,7 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                 struct channel *pch;
                 struct ppp_channel *chan;
 
-                lock_kernel();
+                mutex_lock(&ppp_mutex);
                 pch = PF_TO_CHANNEL(pf);
 
                 switch (cmd) {
@@ -624,7 +623,7 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                                 err = chan->ops->ioctl(chan, cmd, arg);
                         up_read(&pch->chan_sem);
                 }
-                unlock_kernel();
+                mutex_unlock(&ppp_mutex);
                 return err;
         }
 
@@ -634,7 +633,7 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                 return -EINVAL;
         }
 
-        lock_kernel();
+        mutex_lock(&ppp_mutex);
         ppp = PF_TO_PPP(pf);
         switch (cmd) {
         case PPPIOCSMRU:
@@ -782,7 +781,7 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
         default:
                 err = -ENOTTY;
         }
-        unlock_kernel();
+        mutex_unlock(&ppp_mutex);
         return err;
 }
 
@@ -795,7 +794,7 @@ static int ppp_unattached_ioctl(struct net *net, struct ppp_file *pf,
         struct ppp_net *pn;
         int __user *p = (int __user *)arg;
 
-        lock_kernel();
+        mutex_lock(&ppp_mutex);
         switch (cmd) {
         case PPPIOCNEWUNIT:
                 /* Create a new ppp unit */
@@ -846,7 +845,7 @@ static int ppp_unattached_ioctl(struct net *net, struct ppp_file *pf,
         default:
                 err = -ENOTTY;
         }
-        unlock_kernel();
+        mutex_unlock(&ppp_mutex);
         return err;
 }
 
diff --git a/drivers/net/wan/cosa.c b/drivers/net/wan/cosa.c
index f0bd70fb650..04c6cd4333f 100644
--- a/drivers/net/wan/cosa.c
+++ b/drivers/net/wan/cosa.c
@@ -89,7 +89,6 @@
 #include <linux/spinlock.h>
 #include <linux/mutex.h>
 #include <linux/device.h>
-#include <linux/smp_lock.h>
 #include <asm/io.h>
 #include <asm/dma.h>
 #include <asm/byteorder.h>
@@ -174,6 +173,7 @@ struct cosa_data {
  * Character device major number. 117 was allocated for us.
  * The value of 0 means to allocate a first free one.
  */
+static DEFINE_MUTEX(cosa_chardev_mutex);
 static int cosa_major = 117;
 
 /*
@@ -944,7 +944,7 @@ static int cosa_open(struct inode *inode, struct file *file)
         int n;
         int ret = 0;
 
-        lock_kernel();
+        mutex_lock(&cosa_chardev_mutex);
         if ((n=iminor(file->f_path.dentry->d_inode)>>CARD_MINOR_BITS)
                 >= nr_cards) {
                 ret = -ENODEV;
@@ -976,7 +976,7 @@ static int cosa_open(struct inode *inode, struct file *file)
         chan->rx_done = chrdev_rx_done;
         spin_unlock_irqrestore(&cosa->lock, flags);
 out:
-        unlock_kernel();
+        mutex_unlock(&cosa_chardev_mutex);
         return ret;
 }
 
@@ -1212,10 +1212,10 @@ static long cosa_chardev_ioctl(struct file *file, unsigned int cmd,
         struct cosa_data *cosa;
         long ret;
 
-        lock_kernel();
+        mutex_lock(&cosa_chardev_mutex);
         cosa = channel->cosa;
         ret = cosa_ioctl_common(cosa, channel, cmd, arg);
-        unlock_kernel();
+        mutex_unlock(&cosa_chardev_mutex);
         return ret;
 }
 
diff --git a/net/wanrouter/wanmain.c b/net/wanrouter/wanmain.c
index 258daa80ad9..2bf23406637 100644
--- a/net/wanrouter/wanmain.c
+++ b/net/wanrouter/wanmain.c
@@ -48,7 +48,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>       /* support for loadable modules */
 #include <linux/slab.h>         /* kmalloc(), kfree() */
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/mm.h>
 #include <linux/string.h>       /* inline mem*, str* functions */
 
@@ -71,6 +71,7 @@
  *      WAN device IOCTL handlers
  */
 
+static DEFINE_MUTEX(wanrouter_mutex);
 static int wanrouter_device_setup(struct wan_device *wandev,
                                   wandev_conf_t __user *u_conf);
 static int wanrouter_device_stat(struct wan_device *wandev,
@@ -376,7 +377,7 @@ long wanrouter_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
         if (wandev->magic != ROUTER_MAGIC)
                 return -EINVAL;
 
-        lock_kernel();
+        mutex_lock(&wanrouter_mutex);
         switch (cmd) {
         case ROUTER_SETUP:
                 err = wanrouter_device_setup(wandev, data);
@@ -408,7 +409,7 @@ long wanrouter_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                         err = wandev->ioctl(wandev, cmd, arg);
                 else err = -EINVAL;
         }
-        unlock_kernel();
+        mutex_unlock(&wanrouter_mutex);
         return err;
 }
 
diff --git a/net/wanrouter/wanproc.c b/net/wanrouter/wanproc.c
index c44d96b3a43..11f25c7a7a0 100644
--- a/net/wanrouter/wanproc.c
+++ b/net/wanrouter/wanproc.c
@@ -27,7 +27,7 @@
 #include <linux/module.h>
 #include <linux/wanrouter.h>    /* WAN router API definitions */
 #include <linux/seq_file.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 
 #include <net/net_namespace.h>
 #include <asm/io.h>
@@ -66,6 +66,7 @@
  *      /proc/net/router
  */
 
+static DEFINE_MUTEX(config_mutex);
 static struct proc_dir_entry *proc_router;
 
 /* Strings */
@@ -85,7 +86,7 @@ static void *r_start(struct seq_file *m, loff_t *pos)
         struct wan_device *wandev;
         loff_t l = *pos;
 
-        lock_kernel();
+        mutex_lock(&config_mutex);
         if (!l--)
                 return SEQ_START_TOKEN;
         for (wandev = wanrouter_router_devlist; l-- && wandev;
@@ -104,7 +105,7 @@ static void *r_next(struct seq_file *m, void *v, loff_t *pos)
 static void r_stop(struct seq_file *m, void *v)
         __releases(kernel_lock)
 {
-        unlock_kernel();
+        mutex_unlock(&config_mutex);
 }
 
 static int config_show(struct seq_file *m, void *v)