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sh: Replace an explicit computation by the use of the container_of macro

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The macro container_of from kernel.h performs the same
pointer arithmetic operation.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
type T;
expression mptr;
expression member;
@@

- (void *)((char *)mptr - offsetof(T, member))
+ container_of(mptr, T, member)
// </smpl>

Signed-off-by: Nicolas Palix <npalix@diku.dk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Nicolas Palix 2009-12-07 10:38:55 +01:00 committed by Paul Mundt
parent 87a705dde4
commit f701b39998
1 changed files with 5 additions and 4 deletions
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9
arch/sh/kernel/cpu/irq/ipr.c
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@ -17,16 +17,17 @@
* for more details. * for more details.
*/ */
#include <linux/init.h> #include <linux/init.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/topology.h> #include <linux/topology.h>
static inline struct ipr_desc *get_ipr_desc(unsigned int irq) static inline struct ipr_desc *get_ipr_desc(unsigned int irq)
{ {
struct irq_chip *chip = get_irq_chip(irq); struct irq_chip *chip = get_irq_chip(irq);
return (void *)((char *)chip - offsetof(struct ipr_desc, chip)); return container_of(chip, struct ipr_desc, chip);
} }
static void disable_ipr_irq(unsigned int irq) static void disable_ipr_irq(unsigned int irq)