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driver core: don't fail attaching the device if it cannot be bound

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Don't fail bus_attach_device() if the device cannot be bound.

If dev->driver has been specified, reset it to NULL if device_bind_driver()
failed and add the device as an unbound device.  As a result,
bus_attach_device() now cannot fail, and we can remove some checking from
device_add().

Also remove an unneeded check in bus_rescan_devices_helper().

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Cornelia Huck
2007-02-05 16:15:26 -08:00
committed by Greg Kroah-Hartman
parent eed40d3ad2
commit c6a46696f9
4 changed files with 11 additions and 13 deletions
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6
drivers/base/dd.c
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@@ -232,7 +232,7 @@ static int device_probe_drivers(void *data)
*
* Returns 1 if the device was bound to a driver;
* 0 if no matching device was found or multithreaded probing is done;
* error code otherwise.
* -ENODEV if the device is not registered.
*
* When called for a USB interface, @dev->parent->sem must be held.
*/
@@ -246,6 +246,10 @@ int device_attach(struct device * dev)
ret = device_bind_driver(dev);
if (ret == 0)
ret = 1;
else {
dev->driver = NULL;
ret = 0;
}
} else {
if (dev->bus->multithread_probe)
probe_task = kthread_run(device_probe_drivers, dev,