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path: root/drivers/parport/share.c
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Diffstat (limited to 'drivers/parport/share.c')
-rw-r--r--drivers/parport/share.c19
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(&registration_lock);
+ mutex_lock(&registration_lock);
list_for_each_entry(port, &portlist, list)
drv->attach(port);
list_add(&drv->list, &drivers);
- up(&registration_lock);
+ mutex_unlock(&registration_lock);
return 0;
}
@@ -188,11 +189,11 @@ void parport_unregister_driver (struct parport_driver *drv)
{
struct parport *port;
- down(&registration_lock);
+ mutex_lock(&registration_lock);
list_del_init(&drv->list);
list_for_each_entry(port, &portlist, list)
drv->detach(port);
- up(&registration_lock);
+ mutex_unlock(&registration_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(&registration_lock);
+ mutex_lock(&registration_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(&registration_lock);
+ mutex_unlock(&registration_lock);
}
/**
@@ -409,7 +410,7 @@ void parport_remove_port(struct parport *port)
{
int i;
- down(&registration_lock);
+ mutex_lock(&registration_lock);
/* Spread the word. */
detach_driver_chain (port);
@@ -436,7 +437,7 @@ void parport_remove_port(struct parport *port)
}
spin_unlock(&parportlist_lock);
- up(&registration_lock);
+ mutex_unlock(&registration_lock);
parport_proc_unregister(port);