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authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-20 03:24:11 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-20 03:24:11 +0200
commit39ab05c8e0b519ff0a04a869f065746e6e8c3d95 (patch)
treee73f0ba74c4ea7a80dff9b2dd9445a3a74190e28 /drivers/base/dd.c
parentsignal.h need a definition of struct task_struct (diff)
parentdebugfs: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning (diff)
downloadlinux-39ab05c8e0b519ff0a04a869f065746e6e8c3d95.tar.xz
linux-39ab05c8e0b519ff0a04a869f065746e6e8c3d95.zip
Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (44 commits) debugfs: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning sysfs: remove "last sysfs file:" line from the oops messages drivers/base/memory.c: fix warning due to "memory hotplug: Speed up add/remove when blocks are larger than PAGES_PER_SECTION" memory hotplug: Speed up add/remove when blocks are larger than PAGES_PER_SECTION SYSFS: Fix erroneous comments for sysfs_update_group(). driver core: remove the driver-model structures from the documentation driver core: Add the device driver-model structures to kerneldoc Translated Documentation/email-clients.txt RAW driver: Remove call to kobject_put(). reboot: disable usermodehelper to prevent fs access efivars: prevent oops on unload when efi is not enabled Allow setting of number of raw devices as a module parameter Introduce CONFIG_GOOGLE_FIRMWARE driver: Google Memory Console driver: Google EFI SMI x86: Better comments for get_bios_ebda() x86: get_bios_ebda_length() misc: fix ti-st build issues params.c: Use new strtobool function to process boolean inputs debugfs: move to new strtobool ... Fix up trivial conflicts in fs/debugfs/file.c due to the same patch being applied twice, and an unrelated cleanup nearby.
Diffstat (limited to 'drivers/base/dd.c')
-rw-r--r--drivers/base/dd.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 29917c7506cb..6658da743c3a 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -245,6 +245,10 @@ int device_attach(struct device *dev)
device_lock(dev);
if (dev->driver) {
+ if (klist_node_attached(&dev->p->knode_driver)) {
+ ret = 1;
+ goto out_unlock;
+ }
ret = device_bind_driver(dev);
if (ret == 0)
ret = 1;
@@ -257,6 +261,7 @@ int device_attach(struct device *dev)
ret = bus_for_each_drv(dev->bus, NULL, dev, __device_attach);
pm_runtime_put_sync(dev);
}
+out_unlock:
device_unlock(dev);
return ret;
}
@@ -408,17 +413,16 @@ void *dev_get_drvdata(const struct device *dev)
}
EXPORT_SYMBOL(dev_get_drvdata);
-void dev_set_drvdata(struct device *dev, void *data)
+int dev_set_drvdata(struct device *dev, void *data)
{
int error;
- if (!dev)
- return;
if (!dev->p) {
error = device_private_init(dev);
if (error)
- return;
+ return error;
}
dev->p->driver_data = data;
+ return 0;
}
EXPORT_SYMBOL(dev_set_drvdata);