PNP: stop using the subsystem rwsem

The rwsem is not used to protect anything, so the use of it by the PNP subsystem isn't really useful, and it's doubtful if it really did anything or not. So I've removed it. Cc: Adam Belay <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
huntrar · Apr 27, 2007 · 75f1115 · 75f1115
1 parent 341487a
commit 75f1115
Showing 1 changed file with 0 additions and 6 deletions.
diff --git a/drivers/pnp/card.c b/drivers/pnp/card.c
@@ -311,22 +311,18 @@ struct pnp_dev * pnp_request_card_device(struct pnp_card_link *clink, const char
 	return NULL;
 
 found:
-	down_write(&dev->dev.bus->subsys.rwsem);
 	dev->card_link = clink;
 	dev->dev.driver = &drv->link.driver;
 	if (pnp_bus_type.probe(&dev->dev))
 		goto err_out;
 	if (device_bind_driver(&dev->dev))
 		goto err_out;
 
-	up_write(&dev->dev.bus->subsys.rwsem);
-
 	return dev;
 
 err_out:
 	dev->dev.driver = NULL;
 	dev->card_link = NULL;
-	up_write(&dev->dev.bus->subsys.rwsem);
 	return NULL;
 }
 
@@ -340,11 +336,9 @@ void pnp_release_card_device(struct pnp_dev * dev)
 	struct pnp_card_driver * drv = dev->card_link->driver;
 	if (!drv)
 		return;
-	down_write(&dev->dev.bus->subsys.rwsem);
 	drv->link.remove = &card_remove;
 	device_release_driver(&dev->dev);
 	drv->link.remove = &card_remove_first;
-	up_write(&dev->dev.bus->subsys.rwsem);
 }
 
 /*