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| author | Hannes Reinecke <hare@suse.de> | 2005-05-18 10:42:23 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-06-20 15:15:31 -0700 |
| commit | ca2b94ba12f3c36fd3d6ed9d38b3798d4dad0d8b (patch) | |
| tree | d9b85e0f423d1cd0a9ad1c72cec7464bcf50c126 /drivers/base | |
| parent | acaefc25d21f850e47ecc5098d1e0bc442c526be (diff) | |
| download | linux-3.10-ca2b94ba12f3c36fd3d6ed9d38b3798d4dad0d8b.tar.gz linux-3.10-ca2b94ba12f3c36fd3d6ed9d38b3798d4dad0d8b.tar.bz2 linux-3.10-ca2b94ba12f3c36fd3d6ed9d38b3798d4dad0d8b.zip | |
[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>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/bus.c | 13 | ||||
| -rw-r--r-- | drivers/base/dd.c | 3 |
2 files changed, 10 insertions, 6 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 4eb19525e06..43722af90bd 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -270,11 +270,14 @@ int bus_add_device(struct device * dev) if (bus) { pr_debug("bus %s: add device %s\n", bus->name, dev->bus_id); - device_attach(dev); + error = device_attach(dev); klist_add_tail(&bus->klist_devices, &dev->knode_bus); - device_add_attrs(bus, dev); - sysfs_create_link(&bus->devices.kobj, &dev->kobj, dev->bus_id); - sysfs_create_link(&dev->kobj, &dev->bus->subsys.kset.kobj, "bus"); + if (error >= 0) + error = device_add_attrs(bus, dev); + if (!error) { + sysfs_create_link(&bus->devices.kobj, &dev->kobj, dev->bus_id); + sysfs_create_link(&dev->kobj, &dev->bus->subsys.kset.kobj, "bus"); + } } return error; } @@ -394,7 +397,7 @@ static int bus_rescan_devices_helper(struct device *dev, void *data) { int *count = data; - if (!dev->driver && device_attach(dev)) + if (!dev->driver && (device_attach(dev) > 0)) (*count)++; return 0; diff --git a/drivers/base/dd.c b/drivers/base/dd.c index eab2030c506..6db3a789c54 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) { |