[PATCH] driver core: fix error handling in bus_add_device

The error handling in bus_add_device() and device_attach() is simply
non-existing. This patch propagates any error from device_attach to
the upper layers to allow for a proper recovery.

From: Hannes Reinecke <hare@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index eab2030c506d..6db3a789c54f 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -119,7 +119,8 @@ static int __device_attach(struct device_driver * drv, void * data)
  *      driver_probe_device() for each pair. If a compatible
  *      pair is found, break out and return.
  *
- *      Returns 1 if the device was bound to a driver; 0 otherwise.
+ *      Returns 1 if the device was bound to a driver;
+ *      0 if no matching device was found; error code otherwise.
  */
 int device_attach(struct device * dev)
 {