[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 <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
commit ca2b94ba12f3c36fd3d6ed9d38b3798d4dad0d8b
tree d9b85e0f423d1cd0a9ad1c72cec7464bcf50c126
parent acaefc25d21f850e47ecc5098d1e0bc442c526be
author Hannes Reinecke <[email protected]> Wed, 18 May 2005 10:42:23 +0200
committer Greg Kroah-Hartman <[email protected]> Mon, 20 Jun 2005 15:15:31 -0700
drivers/base/bus.c | 13 ++++++++-----
drivers/base/dd.c | 3 ++-
2 files changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
--- 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(str
{
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
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -119,7 +119,8 @@ static int __device_attach(struct device
* 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)
{
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
