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Date: Fri, 9 Jan 2009 15:20:55 -0800
From: Greg Kroah-Hartman <gregkh@...e.de>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...e.de>,
Alan Cox <alan@...rguk.ukuu.org.uk>,
Kay Sievers <kay.sievers@...y.org>
Subject: [PATCH 2/4] Revert "driver core: move knode_driver into private structure"
This reverts commit 93e746db183b3bdbbda67900f79b5835f9cb388f.
Turns out that device_initialize shouldn't fail silently.
This series needs to be reworked in order to get into proper
shape.
Reported-by: Stefan Richter <stefanr@...6.in-berlin.de>
Cc: Alan Cox <alan@...rguk.ukuu.org.uk>
Cc: Kay Sievers <kay.sievers@...y.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
drivers/base/base.h | 4 ----
drivers/base/dd.c | 13 +++++--------
drivers/base/driver.c | 13 +++----------
include/linux/device.h | 1 +
4 files changed, 9 insertions(+), 22 deletions(-)
diff --git a/drivers/base/base.h b/drivers/base/base.h
index 8af0bb2..f5cf31c 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -68,7 +68,6 @@ struct class_private {
*
* @klist_children - klist containing all children of this device
* @knode_parent - node in sibling list
- * @knode_driver - node in driver list
* @device - pointer back to the struct class that this structure is
* associated with.
*
@@ -77,13 +76,10 @@ struct class_private {
struct device_private {
struct klist klist_children;
struct klist_node knode_parent;
- struct klist_node knode_driver;
struct device *device;
};
#define to_device_private_parent(obj) \
container_of(obj, struct device_private, knode_parent)
-#define to_device_private_driver(obj) \
- container_of(obj, struct device_private, knode_driver)
/* initialisation functions */
extern int devices_init(void);
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 6fdaf76..315bed8 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -28,7 +28,7 @@
static void driver_bound(struct device *dev)
{
- if (klist_node_attached(&dev->p->knode_driver)) {
+ if (klist_node_attached(&dev->knode_driver)) {
printk(KERN_WARNING "%s: device %s already bound\n",
__func__, kobject_name(&dev->kobj));
return;
@@ -41,7 +41,7 @@ static void driver_bound(struct device *dev)
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);
+ klist_add_tail(&dev->knode_driver, &dev->driver->p->klist_devices);
}
static int driver_sysfs_add(struct device *dev)
@@ -310,7 +310,7 @@ static void __device_release_driver(struct device *dev)
drv->remove(dev);
devres_release_all(dev);
dev->driver = NULL;
- klist_remove(&dev->p->knode_driver);
+ klist_remove(&dev->knode_driver);
}
}
@@ -340,7 +340,6 @@ EXPORT_SYMBOL_GPL(device_release_driver);
*/
void driver_detach(struct device_driver *drv)
{
- struct device_private *dev_prv;
struct device *dev;
for (;;) {
@@ -349,10 +348,8 @@ void driver_detach(struct device_driver *drv)
spin_unlock(&drv->p->klist_devices.k_lock);
break;
}
- dev_prv = list_entry(drv->p->klist_devices.k_list.prev,
- struct device_private,
- knode_driver.n_node);
- dev = dev_prv->device;
+ dev = list_entry(drv->p->klist_devices.k_list.prev,
+ struct device, knode_driver.n_node);
get_device(dev);
spin_unlock(&drv->p->klist_devices.k_lock);
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index b76cc69..1e2bda7 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -19,14 +19,7 @@
static struct device *next_device(struct klist_iter *i)
{
struct klist_node *n = klist_next(i);
- struct device *dev = NULL;
- struct device_private *dev_prv;
-
- if (n) {
- dev_prv = to_device_private_driver(n);
- dev = dev_prv->device;
- }
- return dev;
+ return n ? container_of(n, struct device, knode_driver) : NULL;
}
/**
@@ -49,7 +42,7 @@ int driver_for_each_device(struct device_driver *drv, struct device *start,
return -EINVAL;
klist_iter_init_node(&drv->p->klist_devices, &i,
- start ? &start->p->knode_driver : NULL);
+ start ? &start->knode_driver : NULL);
while ((dev = next_device(&i)) && !error)
error = fn(dev, data);
klist_iter_exit(&i);
@@ -83,7 +76,7 @@ struct device *driver_find_device(struct device_driver *drv,
return NULL;
klist_iter_init_node(&drv->p->klist_devices, &i,
- (start ? &start->p->knode_driver : NULL));
+ (start ? &start->knode_driver : NULL));
while ((dev = next_device(&i)))
if (match(dev, data) && get_device(dev))
break;
diff --git a/include/linux/device.h b/include/linux/device.h
index 8987f47..c66ceb1 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -366,6 +366,7 @@ struct device_dma_parameters {
};
struct device {
+ struct klist_node knode_driver;
struct klist_node knode_bus;
struct device *parent;
--
1.6.0.4
--
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