diff options
Diffstat (limited to 'drivers/parport/share.c')
| -rw-r--r-- | drivers/parport/share.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/parport/share.c b/drivers/parport/share.c index ea62bed6bc8..bbbfd79adba 100644 --- a/drivers/parport/share.c +++ b/drivers/parport/share.c @@ -32,6 +32,7 @@ #include <linux/kmod.h> #include <linux/spinlock.h> +#include <linux/mutex.h> #include <asm/irq.h> #undef PARPORT_PARANOID @@ -50,7 +51,7 @@ static DEFINE_SPINLOCK(full_list_lock); static LIST_HEAD(drivers); -static DECLARE_MUTEX(registration_lock); +static DEFINE_MUTEX(registration_lock); /* What you can do to a port that's gone away.. */ static void dead_write_lines (struct parport *p, unsigned char b){} @@ -158,11 +159,11 @@ int parport_register_driver (struct parport_driver *drv) if (list_empty(&portlist)) get_lowlevel_driver (); - down(®istration_lock); + mutex_lock(®istration_lock); list_for_each_entry(port, &portlist, list) drv->attach(port); list_add(&drv->list, &drivers); - up(®istration_lock); + mutex_unlock(®istration_lock); return 0; } @@ -188,11 +189,11 @@ void parport_unregister_driver (struct parport_driver *drv) { struct parport *port; - down(®istration_lock); + mutex_lock(®istration_lock); list_del_init(&drv->list); list_for_each_entry(port, &portlist, list) drv->detach(port); - up(®istration_lock); + mutex_unlock(®istration_lock); } static void free_port (struct parport *port) @@ -366,7 +367,7 @@ void parport_announce_port (struct parport *port) #endif parport_proc_register(port); - down(®istration_lock); + mutex_lock(®istration_lock); spin_lock_irq(&parportlist_lock); list_add_tail(&port->list, &portlist); for (i = 1; i < 3; i++) { @@ -383,7 +384,7 @@ void parport_announce_port (struct parport *port) if (slave) attach_driver_chain(slave); } - up(®istration_lock); + mutex_unlock(®istration_lock); } /** @@ -409,7 +410,7 @@ void parport_remove_port(struct parport *port) { int i; - down(®istration_lock); + mutex_lock(®istration_lock); /* Spread the word. */ detach_driver_chain (port); @@ -436,7 +437,7 @@ void parport_remove_port(struct parport *port) } spin_unlock(&parportlist_lock); - up(®istration_lock); + mutex_unlock(®istration_lock); parport_proc_unregister(port); |