diff options
Diffstat (limited to 'drivers/isdn/hysdn/hysdn_procconf.c')
| -rw-r--r-- | drivers/isdn/hysdn/hysdn_procconf.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/isdn/hysdn/hysdn_procconf.c b/drivers/isdn/hysdn/hysdn_procconf.c index 90b35e1a4b7..96b3e39c335 100644 --- a/drivers/isdn/hysdn/hysdn_procconf.c +++ b/drivers/isdn/hysdn/hysdn_procconf.c @@ -16,11 +16,13 @@ #include <linux/poll.h> #include <linux/proc_fs.h> #include <linux/pci.h> -#include <linux/smp_lock.h> +#include <linux/slab.h> +#include <linux/mutex.h> #include <net/net_namespace.h> #include "hysdn_defs.h" +static DEFINE_MUTEX(hysdn_conf_mutex); static char *hysdn_procconf_revision = "$Revision: 1.8.6.4 $"; #define INFO_OUT_LEN 80 /* length of info line including lf */ @@ -233,7 +235,7 @@ hysdn_conf_open(struct inode *ino, struct file *filep) char *cp, *tmp; /* now search the addressed card */ - lock_kernel(); + mutex_lock(&hysdn_conf_mutex); card = card_root; while (card) { pd = card->procconf; @@ -242,7 +244,7 @@ hysdn_conf_open(struct inode *ino, struct file *filep) card = card->next; /* search next entry */ } if (!card) { - unlock_kernel(); + mutex_unlock(&hysdn_conf_mutex); return (-ENODEV); /* device is unknown/invalid */ } if (card->debug_flags & (LOG_PROC_OPEN | LOG_PROC_ALL)) @@ -254,7 +256,7 @@ hysdn_conf_open(struct inode *ino, struct file *filep) /* write only access -> write boot file or conf line */ if (!(cnf = kmalloc(sizeof(struct conf_writedata), GFP_KERNEL))) { - unlock_kernel(); + mutex_unlock(&hysdn_conf_mutex); return (-EFAULT); } cnf->card = card; @@ -266,7 +268,7 @@ hysdn_conf_open(struct inode *ino, struct file *filep) /* read access -> output card info data */ if (!(tmp = kmalloc(INFO_OUT_LEN * 2 + 2, GFP_KERNEL))) { - unlock_kernel(); + mutex_unlock(&hysdn_conf_mutex); return (-EFAULT); /* out of memory */ } filep->private_data = tmp; /* start of string */ @@ -300,10 +302,10 @@ hysdn_conf_open(struct inode *ino, struct file *filep) *cp++ = '\n'; *cp = 0; /* end of string */ } else { /* simultaneous read/write access forbidden ! */ - unlock_kernel(); + mutex_unlock(&hysdn_conf_mutex); return (-EPERM); /* no permission this time */ } - unlock_kernel(); + mutex_unlock(&hysdn_conf_mutex); return nonseekable_open(ino, filep); } /* hysdn_conf_open */ @@ -318,7 +320,7 @@ hysdn_conf_close(struct inode *ino, struct file *filep) int retval = 0; struct proc_dir_entry *pd; - lock_kernel(); + mutex_lock(&hysdn_conf_mutex); /* search the addressed card */ card = card_root; while (card) { @@ -328,7 +330,7 @@ hysdn_conf_close(struct inode *ino, struct file *filep) card = card->next; /* search next entry */ } if (!card) { - unlock_kernel(); + mutex_unlock(&hysdn_conf_mutex); return (-ENODEV); /* device is unknown/invalid */ } if (card->debug_flags & (LOG_PROC_OPEN | LOG_PROC_ALL)) @@ -351,7 +353,7 @@ hysdn_conf_close(struct inode *ino, struct file *filep) kfree(filep->private_data); /* release memory */ } - unlock_kernel(); + mutex_unlock(&hysdn_conf_mutex); return (retval); } /* hysdn_conf_close */ |