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authorAlan Stern <stern@rowland.harvard.edu>2005-11-23 15:43:50 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-23 23:03:06 -0800
commit2b08c8d0468866f86da97f836c6ac14338cb81a9 (patch)
treeeca60a3b6811a825cd3642a666aa523a18fe484b
parent133747e8d1e912863edfb3869e36b97b9939d4fc (diff)
[PATCH] Small fixes to driver core
This patch (as603) makes a few small fixes to the driver core: Change spin_lock_irq for a klist lock to spin_lock; Fix reference count leaks; Minor spelling and formatting changes. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--drivers/base/bus.c21
-rw-r--r--drivers/base/dd.c8
2 files changed, 12 insertions, 17 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 03204bfd17af..fa601b085eba 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -133,7 +133,7 @@ static struct kobj_type ktype_bus = {
decl_subsys(bus, &ktype_bus, NULL);
-/* Manually detach a device from it's associated driver. */
+/* Manually detach a device from its associated driver. */
static int driver_helper(struct device *dev, void *data)
{
const char *name = data;
@@ -151,14 +151,13 @@ static ssize_t driver_unbind(struct device_driver *drv,
int err = -ENODEV;
dev = bus_find_device(bus, NULL, (void *)buf, driver_helper);
- if ((dev) &&
- (dev->driver == drv)) {
+ if (dev && dev->driver == drv) {
device_release_driver(dev);
err = count;
}
- if (err)
- return err;
- return count;
+ put_device(dev);
+ put_bus(bus);
+ return err;
}
static DRIVER_ATTR(unbind, S_IWUSR, NULL, driver_unbind);
@@ -175,16 +174,14 @@ static ssize_t driver_bind(struct device_driver *drv,
int err = -ENODEV;
dev = bus_find_device(bus, NULL, (void *)buf, driver_helper);
- if ((dev) &&
- (dev->driver == NULL)) {
+ if (dev && dev->driver == NULL) {
down(&dev->sem);
err = driver_probe_device(drv, dev);
up(&dev->sem);
- put_device(dev);
}
- if (err)
- return err;
- return count;
+ put_device(dev);
+ put_bus(bus);
+ return err;
}
static DRIVER_ATTR(bind, S_IWUSR, NULL, driver_bind);
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 3565e9795301..3b419c9a1e7e 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -62,7 +62,6 @@ void device_bind_driver(struct device * dev)
* because we don't know the format of the ID structures, nor what
* is to be considered a match and what is not.
*
- *
* This function returns 1 if a match is found, an error if one
* occurs (that is not -ENODEV or -ENXIO), and 0 otherwise.
*
@@ -158,7 +157,6 @@ static int __driver_attach(struct device * dev, void * data)
driver_probe_device(drv, dev);
up(&dev->sem);
-
return 0;
}
@@ -225,15 +223,15 @@ void driver_detach(struct device_driver * drv)
struct device * dev;
for (;;) {
- spin_lock_irq(&drv->klist_devices.k_lock);
+ spin_lock(&drv->klist_devices.k_lock);
if (list_empty(&drv->klist_devices.k_list)) {
- spin_unlock_irq(&drv->klist_devices.k_lock);
+ spin_unlock(&drv->klist_devices.k_lock);
break;
}
dev = list_entry(drv->klist_devices.k_list.prev,
struct device, knode_driver.n_node);
get_device(dev);
- spin_unlock_irq(&drv->klist_devices.k_lock);
+ spin_unlock(&drv->klist_devices.k_lock);
down(&dev->sem);
if (dev->driver == drv)