diff options
Diffstat (limited to 'net/atm/resources.c')
| -rw-r--r-- | net/atm/resources.c | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/net/atm/resources.c b/net/atm/resources.c index 224190537c9..18ac80698f8 100644 --- a/net/atm/resources.c +++ b/net/atm/resources.c @@ -18,6 +18,8 @@ #include <linux/bitops.h> #include <linux/capability.h> #include <linux/delay.h> +#include <linux/mutex.h> + #include <net/sock.h> /* for struct sock */ #include "common.h" @@ -26,7 +28,7 @@ LIST_HEAD(atm_devs); -DECLARE_MUTEX(atm_dev_mutex); +DEFINE_MUTEX(atm_dev_mutex); static struct atm_dev *__alloc_atm_dev(const char *type) { @@ -65,9 +67,9 @@ struct atm_dev *atm_dev_lookup(int number) { struct atm_dev *dev; - down(&atm_dev_mutex); + mutex_lock(&atm_dev_mutex); dev = __atm_dev_lookup(number); - up(&atm_dev_mutex); + mutex_unlock(&atm_dev_mutex); return dev; } @@ -83,11 +85,11 @@ struct atm_dev *atm_dev_register(const char *type, const struct atmdev_ops *ops, type); return NULL; } - down(&atm_dev_mutex); + mutex_lock(&atm_dev_mutex); if (number != -1) { if ((inuse = __atm_dev_lookup(number))) { atm_dev_put(inuse); - up(&atm_dev_mutex); + mutex_unlock(&atm_dev_mutex); kfree(dev); return NULL; } @@ -112,12 +114,12 @@ struct atm_dev *atm_dev_register(const char *type, const struct atmdev_ops *ops, printk(KERN_ERR "atm_dev_register: " "atm_proc_dev_register failed for dev %s\n", type); - up(&atm_dev_mutex); + mutex_unlock(&atm_dev_mutex); kfree(dev); return NULL; } list_add_tail(&dev->dev_list, &atm_devs); - up(&atm_dev_mutex); + mutex_unlock(&atm_dev_mutex); return dev; } @@ -133,9 +135,9 @@ void atm_dev_deregister(struct atm_dev *dev) * with same number can appear, such we need deregister proc, * release async all vccs and remove them from vccs list too */ - down(&atm_dev_mutex); + mutex_lock(&atm_dev_mutex); list_del(&dev->dev_list); - up(&atm_dev_mutex); + mutex_unlock(&atm_dev_mutex); atm_dev_release_vccs(dev); atm_proc_dev_deregister(dev); @@ -196,16 +198,16 @@ int atm_dev_ioctl(unsigned int cmd, void __user *arg) return -EFAULT; if (get_user(len, &iobuf->length)) return -EFAULT; - down(&atm_dev_mutex); + mutex_lock(&atm_dev_mutex); list_for_each(p, &atm_devs) size += sizeof(int); if (size > len) { - up(&atm_dev_mutex); + mutex_unlock(&atm_dev_mutex); return -E2BIG; } tmp_buf = kmalloc(size, GFP_ATOMIC); if (!tmp_buf) { - up(&atm_dev_mutex); + mutex_unlock(&atm_dev_mutex); return -ENOMEM; } tmp_p = tmp_buf; @@ -213,7 +215,7 @@ int atm_dev_ioctl(unsigned int cmd, void __user *arg) dev = list_entry(p, struct atm_dev, dev_list); *tmp_p++ = dev->number; } - up(&atm_dev_mutex); + mutex_unlock(&atm_dev_mutex); error = ((copy_to_user(buf, tmp_buf, size)) || put_user(size, &iobuf->length)) ? -EFAULT : 0; @@ -400,13 +402,13 @@ static __inline__ void *dev_get_idx(loff_t left) void *atm_dev_seq_start(struct seq_file *seq, loff_t *pos) { - down(&atm_dev_mutex); + mutex_lock(&atm_dev_mutex); return *pos ? dev_get_idx(*pos) : (void *) 1; } void atm_dev_seq_stop(struct seq_file *seq, void *v) { - up(&atm_dev_mutex); + mutex_unlock(&atm_dev_mutex); } void *atm_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos) |