diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/base/base.h | 1 | ||||
| -rw-r--r-- | drivers/base/bus.c | 26 | ||||
| -rw-r--r-- | drivers/base/dd.c | 2 |
3 files changed, 28 insertions, 1 deletions
diff --git a/drivers/base/base.h b/drivers/base/base.h index 645f6269292..783752b68a9 100644 --- a/drivers/base/base.h +++ b/drivers/base/base.h @@ -5,6 +5,7 @@ extern int bus_add_driver(struct device_driver *); extern void bus_remove_driver(struct device_driver *); extern void driver_detach(struct device_driver * drv); +extern int driver_probe_device(struct device_driver *, struct device *); static inline struct class_device *to_class_dev(struct kobject *obj) { diff --git a/drivers/base/bus.c b/drivers/base/bus.c index fa41ee90a53..7e17488271a 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -160,6 +160,30 @@ static ssize_t driver_unbind(struct device_driver *drv, } static DRIVER_ATTR(unbind, S_IWUSR, NULL, driver_unbind); +/* + * Manually attach a device to a driver. + * Note: the driver must want to bind to the device, + * it is not possible to override the driver's id table. + */ +static ssize_t driver_bind(struct device_driver *drv, + const char *buf, size_t count) +{ + struct bus_type *bus = get_bus(drv->bus); + struct device *dev; + int err = -ENODEV; + + dev = bus_find_device(bus, NULL, (void *)buf, driver_helper); + if ((dev) && + (dev->driver == NULL)) { + down(&dev->sem); + err = driver_probe_device(drv, dev); + up(&dev->sem); + put_device(dev); + } + return err; +} +static DRIVER_ATTR(bind, S_IWUSR, NULL, driver_bind); + static struct device * next_device(struct klist_iter * i) { @@ -425,6 +449,7 @@ int bus_add_driver(struct device_driver * drv) driver_add_attrs(bus, drv); driver_create_file(drv, &driver_attr_unbind); + driver_create_file(drv, &driver_attr_bind); } return error; } @@ -442,6 +467,7 @@ int bus_add_driver(struct device_driver * drv) void bus_remove_driver(struct device_driver * drv) { if (drv->bus) { + driver_remove_file(drv, &driver_attr_bind); driver_remove_file(drv, &driver_attr_unbind); driver_remove_attrs(drv->bus, drv); klist_remove(&drv->knode_bus); diff --git a/drivers/base/dd.c b/drivers/base/dd.c index 6db3a789c54..16323f9cbff 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -65,7 +65,7 @@ void device_bind_driver(struct device * dev) * * This function must be called with @dev->sem held. */ -static int driver_probe_device(struct device_driver * drv, struct device * dev) +int driver_probe_device(struct device_driver * drv, struct device * dev) { int ret = 0; |