diff options
Diffstat (limited to 'drivers/usb/misc/legousbtower.c')
| -rw-r--r-- | drivers/usb/misc/legousbtower.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c index 1336745b8f55..779bcf0373ad 100644 --- a/drivers/usb/misc/legousbtower.c +++ b/drivers/usb/misc/legousbtower.c @@ -83,6 +83,7 @@ #include <linux/module.h> #include <linux/smp_lock.h> #include <linux/completion.h> +#include <linux/mutex.h> #include <asm/uaccess.h> #include <linux/usb.h> #include <linux/poll.h> @@ -256,7 +257,7 @@ static void tower_disconnect (struct usb_interface *interface); /* prevent races between open() and disconnect */ -static DECLARE_MUTEX (disconnect_sem); +static DEFINE_MUTEX (disconnect_mutex); /* file operations needed when we register this driver */ static struct file_operations tower_fops = { @@ -349,7 +350,7 @@ static int tower_open (struct inode *inode, struct file *file) nonseekable_open(inode, file); subminor = iminor(inode); - down (&disconnect_sem); + mutex_lock (&disconnect_mutex); interface = usb_find_interface (&tower_driver, subminor); @@ -427,7 +428,7 @@ unlock_exit: up (&dev->sem); unlock_disconnect_exit: - up (&disconnect_sem); + mutex_unlock (&disconnect_mutex); dbg(2, "%s: leave, return value %d ", __FUNCTION__, retval); @@ -1005,7 +1006,7 @@ static void tower_disconnect (struct usb_interface *interface) dbg(2, "%s: enter", __FUNCTION__); - down (&disconnect_sem); + mutex_lock (&disconnect_mutex); dev = usb_get_intfdata (interface); usb_set_intfdata (interface, NULL); @@ -1027,7 +1028,7 @@ static void tower_disconnect (struct usb_interface *interface) up (&dev->sem); } - up (&disconnect_sem); + mutex_unlock (&disconnect_mutex); info("LEGO USB Tower #%d now disconnected", (minor - LEGO_USB_TOWER_MINOR_BASE)); |