diff options
Diffstat (limited to 'drivers/usb/misc/iowarrior.c')
| -rw-r--r-- | drivers/usb/misc/iowarrior.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index 7dc9d3c69984..82966458a004 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -18,7 +18,7 @@ #include <linux/init.h> #include <linux/slab.h> #include <linux/sched.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/poll.h> #include <linux/usb/iowarrior.h> @@ -61,6 +61,7 @@ MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); /* Module parameters */ +static DEFINE_MUTEX(iowarrior_mutex); static int debug = 0; module_param(debug, bool, 0644); MODULE_PARM_DESC(debug, "debug=1 enables debugging messages"); @@ -493,7 +494,7 @@ static long iowarrior_ioctl(struct file *file, unsigned int cmd, return -ENOMEM; /* lock this object */ - lock_kernel(); + mutex_lock(&iowarrior_mutex); mutex_lock(&dev->mutex); /* verify that the device wasn't unplugged */ @@ -585,7 +586,7 @@ static long iowarrior_ioctl(struct file *file, unsigned int cmd, error_out: /* unlock the device */ mutex_unlock(&dev->mutex); - unlock_kernel(); + mutex_unlock(&iowarrior_mutex); kfree(buffer); return retval; } @@ -602,12 +603,12 @@ static int iowarrior_open(struct inode *inode, struct file *file) dbg("%s", __func__); - lock_kernel(); + mutex_lock(&iowarrior_mutex); subminor = iminor(inode); interface = usb_find_interface(&iowarrior_driver, subminor); if (!interface) { - unlock_kernel(); + mutex_unlock(&iowarrior_mutex); err("%s - error, can't find device for minor %d", __func__, subminor); return -ENODEV; @@ -617,7 +618,7 @@ static int iowarrior_open(struct inode *inode, struct file *file) dev = usb_get_intfdata(interface); if (!dev) { mutex_unlock(&iowarrior_open_disc_lock); - unlock_kernel(); + mutex_unlock(&iowarrior_mutex); return -ENODEV; } @@ -644,7 +645,7 @@ static int iowarrior_open(struct inode *inode, struct file *file) out: mutex_unlock(&dev->mutex); - unlock_kernel(); + mutex_unlock(&iowarrior_mutex); return retval; } |