diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2006-09-18 16:24:28 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-09-25 21:08:40 -0700 |
| commit | 81107bf531d2524afbcd61f3b4ad57a71295d591 (patch) | |
| tree | 8c4f985714432bee996720c2d8e4bcfbe3d70575 /drivers/base/driver.c | |
| parent | f2eaae197f4590c4d96f31b09b0ee9067421a95c (diff) | |
| download | linux-81107bf531d2524afbcd61f3b4ad57a71295d591.tar.bz2 | |
Driver core: Remove unneeded routines from driver core
This patch (as783) simplifies the driver core slightly by removing four
unnecessary _get and _put methods.
It is vital that when a driver is removed from its bus's klist of
registered drivers, or when a device is removed from a driver's klist
of bound devices, that the klist updates complete synchronously.
Otherwise the kernel might try binding an unregistered driver to a
newly-registered device, or adding a device to the klist for a new
driver before it has been removed from the old driver's klist.
Since the removals must be synchronous, they don't need to update any
reference counts. Hence the _get and _put methods can be dispensed
with.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base/driver.c')
| -rw-r--r-- | drivers/base/driver.c | 16 |
1 files changed, 1 insertions, 15 deletions
diff --git a/drivers/base/driver.c b/drivers/base/driver.c index 562600dd540a..1214cbd17d86 100644 --- a/drivers/base/driver.c +++ b/drivers/base/driver.c @@ -142,20 +142,6 @@ void put_driver(struct device_driver * drv) kobject_put(&drv->kobj); } -static void klist_devices_get(struct klist_node *n) -{ - struct device *dev = container_of(n, struct device, knode_driver); - - get_device(dev); -} - -static void klist_devices_put(struct klist_node *n) -{ - struct device *dev = container_of(n, struct device, knode_driver); - - put_device(dev); -} - /** * driver_register - register driver with bus * @drv: driver to register @@ -175,7 +161,7 @@ int driver_register(struct device_driver * drv) (drv->bus->shutdown && drv->shutdown)) { printk(KERN_WARNING "Driver '%s' needs updating - please use bus_type methods\n", drv->name); } - klist_init(&drv->klist_devices, klist_devices_get, klist_devices_put); + klist_init(&drv->klist_devices, NULL, NULL); init_completion(&drv->unloaded); return bus_add_driver(drv); } |