diff options
Diffstat (limited to 'drivers/isdn/hysdn/hysdn_proclog.c')
| -rw-r--r-- | drivers/isdn/hysdn/hysdn_proclog.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/isdn/hysdn/hysdn_proclog.c b/drivers/isdn/hysdn/hysdn_proclog.c index e83f6fda32fe..37a9dd337308 100644 --- a/drivers/isdn/hysdn/hysdn_proclog.c +++ b/drivers/isdn/hysdn/hysdn_proclog.c @@ -15,13 +15,14 @@ #include <linux/proc_fs.h> #include <linux/sched.h> #include <linux/slab.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include "hysdn_defs.h" /* the proc subdir for the interface is defined in the procconf module */ extern struct proc_dir_entry *hysdn_proc_entry; +static DEFINE_MUTEX(hysdn_log_mutex); static void put_log_buffer(hysdn_card * card, char *cp); /*************************************************/ @@ -251,7 +252,7 @@ hysdn_log_open(struct inode *ino, struct file *filep) struct procdata *pd = NULL; unsigned long flags; - lock_kernel(); + mutex_lock(&hysdn_log_mutex); card = card_root; while (card) { pd = card->proclog; @@ -260,7 +261,7 @@ hysdn_log_open(struct inode *ino, struct file *filep) card = card->next; /* search next entry */ } if (!card) { - unlock_kernel(); + mutex_unlock(&hysdn_log_mutex); return (-ENODEV); /* device is unknown/invalid */ } filep->private_data = card; /* remember our own card */ @@ -278,10 +279,10 @@ hysdn_log_open(struct inode *ino, struct file *filep) filep->private_data = &pd->log_head; spin_unlock_irqrestore(&card->hysdn_lock, flags); } else { /* simultaneous read/write access forbidden ! */ - unlock_kernel(); + mutex_unlock(&hysdn_log_mutex); return (-EPERM); /* no permission this time */ } - unlock_kernel(); + mutex_unlock(&hysdn_log_mutex); return nonseekable_open(ino, filep); } /* hysdn_log_open */ @@ -300,7 +301,7 @@ hysdn_log_close(struct inode *ino, struct file *filep) hysdn_card *card; int retval = 0; - lock_kernel(); + mutex_lock(&hysdn_log_mutex); if ((filep->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_WRITE) { /* write only access -> write debug level written */ retval = 0; /* success */ @@ -339,7 +340,7 @@ hysdn_log_close(struct inode *ino, struct file *filep) kfree(inf); } } /* read access */ - unlock_kernel(); + mutex_unlock(&hysdn_log_mutex); return (retval); } /* hysdn_log_close */ |