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| author | Stefani Seibold <stefani@seibold.net> | 2010-03-06 17:50:14 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-05-21 09:37:29 -0700 |
| commit | fbb88fadf7dc2dd6d0d1aa88ff521b2f8552996a (patch) | |
| tree | af4979113cb3b7fbd8fdbba5cad35a7cb185e9b3 | |
| parent | 6f18ff91d926ab411749a199b06a49f6bc72e9af (diff) | |
| download | linux-fbb88fadf7dc2dd6d0d1aa88ff521b2f8552996a.tar.gz linux-fbb88fadf7dc2dd6d0d1aa88ff521b2f8552996a.tar.bz2 linux-fbb88fadf7dc2dd6d0d1aa88ff521b2f8552996a.zip | |
driver-core: fix potential race condition in drivers/base/dd.c
This patch fix a potential race condition in the driver_bound() function
in the file driver/base/dd.c.
The broadcast of the BUS_NOTIFY_BOUND_DRIVER notifier should be done
after adding the new device to the driver list. Otherwise notifier
listener will fail if they use functions like usb_find_interface().
The patch is against kernel 2.6.33. Please merge it.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/base/dd.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/base/dd.c b/drivers/base/dd.c index c89291f8a16b..503c2620bbcc 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -40,11 +40,11 @@ static void driver_bound(struct device *dev) pr_debug("driver: '%s': %s: bound to device '%s'\n", dev_name(dev), __func__, dev->driver->name); + klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices); + if (dev->bus) blocking_notifier_call_chain(&dev->bus->p->bus_notifier, BUS_NOTIFY_BOUND_DRIVER, dev); - - klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices); } static int driver_sysfs_add(struct device *dev) |