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driver-core: Move kobj_to_dev from genhd.h to device.h

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This function is not really specific to the genhd layer and there are various
re-implementations or open-coded variants of it all throughout the kernel. To
avoid further duplications move the function to a more generic place.

While moving also convert it from a macro to a inline function.

Potential users of this function can be detected and converted using the
following coccinelle patch:

// <smpl>
@@
expression k;
@@
-container_of(k, struct device, kobj)
+kobj_to_dev(kobj)
// </smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lars-Peter Clausen 2012-07-03 18:49:35 +02:00 committed by Greg Kroah-Hartman
parent 8153584e3f
commit a423296375
2 changed files with 5 additions and 1 deletions
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5
include/linux/device.h
View File

@ -689,6 +689,11 @@ struct device {
void (*release)(struct device *dev);
};
static inline struct device *kobj_to_dev(struct kobject *kobj)
{
return container_of(kobj, struct device, kobj);
}
/* Get the wakeup routines, which depend on struct device */
#include <linux/pm_wakeup.h>

1
include/linux/genhd.h
View File

@ -16,7 +16,6 @@
#ifdef CONFIG_BLOCK
#define kobj_to_dev(k) container_of((k), struct device, kobj)
#define dev_to_disk(device) container_of((device), struct gendisk, part0.__dev)
#define dev_to_part(device) container_of((device), struct hd_struct, __dev)
#define disk_to_dev(disk) (&(disk)->part0.__dev)