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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 ea62bed6bc83..bbbfd79adbaf 100644
--- a/drivers/parport/share.c
+++ b/drivers/parport/share.c
@@ -32,6 +32,7 @@
32#include <linux/kmod.h> 32#include <linux/kmod.h>
33 33
34#include <linux/spinlock.h> 34#include <linux/spinlock.h>
35#include <linux/mutex.h>
35#include <asm/irq.h> 36#include <asm/irq.h>
36 37
37#undef PARPORT_PARANOID 38#undef PARPORT_PARANOID
@@ -50,7 +51,7 @@ static DEFINE_SPINLOCK(full_list_lock);
50 51
51static LIST_HEAD(drivers); 52static LIST_HEAD(drivers);
52 53
53static DECLARE_MUTEX(registration_lock); 54static DEFINE_MUTEX(registration_lock);
54 55
55/* What you can do to a port that's gone away.. */ 56/* What you can do to a port that's gone away.. */
56static void dead_write_lines (struct parport *p, unsigned char b){} 57static void dead_write_lines (struct parport *p, unsigned char b){}
@@ -158,11 +159,11 @@ int parport_register_driver (struct parport_driver *drv)
158 if (list_empty(&portlist)) 159 if (list_empty(&portlist))
159 get_lowlevel_driver (); 160 get_lowlevel_driver ();
160 161
161 down(&registration_lock); 162 mutex_lock(&registration_lock);
162 list_for_each_entry(port, &portlist, list) 163 list_for_each_entry(port, &portlist, list)
163 drv->attach(port); 164 drv->attach(port);
164 list_add(&drv->list, &drivers); 165 list_add(&drv->list, &drivers);
165 up(&registration_lock); 166 mutex_unlock(&registration_lock);
166 167
167 return 0; 168 return 0;
168} 169}
@@ -188,11 +189,11 @@ void parport_unregister_driver (struct parport_driver *drv)
188{ 189{
189 struct parport *port; 190 struct parport *port;
190 191
191 down(&registration_lock); 192 mutex_lock(&registration_lock);
192 list_del_init(&drv->list); 193 list_del_init(&drv->list);
193 list_for_each_entry(port, &portlist, list) 194 list_for_each_entry(port, &portlist, list)
194 drv->detach(port); 195 drv->detach(port);
195 up(&registration_lock); 196 mutex_unlock(&registration_lock);
196} 197}
197 198
198static void free_port (struct parport *port) 199static void free_port (struct parport *port)
@@ -366,7 +367,7 @@ void parport_announce_port (struct parport *port)
366#endif 367#endif
367 368
368 parport_proc_register(port); 369 parport_proc_register(port);
369 down(&registration_lock); 370 mutex_lock(&registration_lock);
370 spin_lock_irq(&parportlist_lock); 371 spin_lock_irq(&parportlist_lock);
371 list_add_tail(&port->list, &portlist); 372 list_add_tail(&port->list, &portlist);
372 for (i = 1; i < 3; i++) { 373 for (i = 1; i < 3; i++) {
@@ -383,7 +384,7 @@ void parport_announce_port (struct parport *port)
383 if (slave) 384 if (slave)
384 attach_driver_chain(slave); 385 attach_driver_chain(slave);
385 } 386 }
386 up(&registration_lock); 387 mutex_unlock(&registration_lock);
387} 388}
388 389
389/** 390/**
@@ -409,7 +410,7 @@ void parport_remove_port(struct parport *port)
409{ 410{
410 int i; 411 int i;
411 412
412 down(&registration_lock); 413 mutex_lock(&registration_lock);
413 414
414 /* Spread the word. */ 415 /* Spread the word. */
415 detach_driver_chain (port); 416 detach_driver_chain (port);
@@ -436,7 +437,7 @@ void parport_remove_port(struct parport *port)
436 } 437 }
437 spin_unlock(&parportlist_lock); 438 spin_unlock(&parportlist_lock);
438 439
439 up(&registration_lock); 440 mutex_unlock(&registration_lock);
440 441
441 parport_proc_unregister(port); 442 parport_proc_unregister(port);
442 443