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kobject: convert ibmasm to use kref, not kobject

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The IBM asm driver is using a kobject only for reference counting,
nothing else.  So switch it to use a kref instead, which is all that is
needed, and is much smaller.

Cc: Max Asböck <amax@us.ibm.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman
2007-12-03 21:16:20 -07:00
parent d7b3788965
commit a045171f87
2 changed files with 9 additions and 13 deletions
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10
drivers/misc/ibmasm/ibmasm.h
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@ -31,6 +31,7 @@
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/kref.h>
#include <linux/device.h>
#include <linux/input.h>
@ -92,24 +93,25 @@ struct command {
unsigned char *buffer;
size_t buffer_size;
int status;
struct kobject kobj;
struct kref kref;
spinlock_t *lock;
};
#define to_command(c) container_of(c, struct command, kobj)
#define to_command(c) container_of(c, struct command, kref)
void ibmasm_free_command(struct kref *kref);
static inline void command_put(struct command *cmd)
{
unsigned long flags;
spinlock_t *lock = cmd->lock;
spin_lock_irqsave(lock, flags);
kobject_put(&cmd->kobj);
kref_put(&cmd->kref, ibmasm_free_command);
spin_unlock_irqrestore(lock, flags);
}
static inline void command_get(struct command *cmd)
{
kobject_get(&cmd->kobj);
kref_get(&cmd->kref);
}