diff options
Diffstat (limited to 'drivers/char/pcmcia/cm4000_cs.c')
| -rw-r--r-- | drivers/char/pcmcia/cm4000_cs.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c index ec73d9f6d9ed..7d091b68d247 100644 --- a/drivers/char/pcmcia/cm4000_cs.c +++ b/drivers/char/pcmcia/cm4000_cs.c @@ -30,7 +30,7 @@ #include <linux/fs.h> #include <linux/delay.h> #include <linux/bitrev.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/uaccess.h> #include <linux/io.h> @@ -55,6 +55,7 @@ __func__ , ## args); \ } while (0) +static DEFINE_MUTEX(cmm_mutex); static char *version = "cm4000_cs.c v2.4.0gm6 - All bugs added by Harald Welte"; #define T_1SEC (HZ) @@ -1418,7 +1419,7 @@ static long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) iminor(inode), ioctl_names[_IOC_NR(cmd)]); #endif - lock_kernel(); + mutex_lock(&cmm_mutex); rc = -ENODEV; link = dev_table[iminor(inode)]; if (!pcmcia_dev_present(link)) { @@ -1626,7 +1627,7 @@ static long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) rc = -ENOTTY; } out: - unlock_kernel(); + mutex_unlock(&cmm_mutex); return rc; } @@ -1640,7 +1641,7 @@ static int cmm_open(struct inode *inode, struct file *filp) if (minor >= CM4000_MAX_DEV) return -ENODEV; - lock_kernel(); + mutex_lock(&cmm_mutex); link = dev_table[minor]; if (link == NULL || !pcmcia_dev_present(link)) { ret = -ENODEV; @@ -1685,7 +1686,7 @@ static int cmm_open(struct inode *inode, struct file *filp) DEBUGP(2, dev, "<- cmm_open\n"); ret = nonseekable_open(inode, filp); out: - unlock_kernel(); + mutex_unlock(&cmm_mutex); return ret; } |