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Move definition of container_of() to common.h

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AVR32 and AT91SAM9 both have their own identical definitions of
container_of() taken from the Linux kernel. Move it to common.h so
that all architectures can use it.

container_of() is already used by some drivers, and will be used
extensively by the new and improved SPI API.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
This commit is contained in:
Haavard Skinnemoen 2008-05-16 11:10:30 +02:00 committed by Wolfgang Denk
parent 110e006fe6
commit 289011207d
3 changed files with 11 additions and 22 deletions
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11
include/asm-arm/arch-at91sam9/hardware.h
View file

@ -51,15 +51,4 @@
#error "Unsupported AT91 processor"
#endif
/*
* container_of - cast a member of a structure out to the containing structure
*
* @ptr: the pointer to the member.
* @type: the type of the container struct this is embedded in.
* @member: the name of the member within the struct.
*/
#define container_of(ptr, type, member) ({ \
const typeof(((type *)0)->member) *__mptr = (ptr); \
(type *)((char *)__mptr - offsetof(type, member)); })
#endif

11
include/asm-avr32/u-boot.h
View file

@ -42,15 +42,4 @@ typedef struct bd_info {
#define bi_memstart bi_dram[0].start
#define bi_memsize bi_dram[0].size
/**
* container_of - cast a member of a structure out to the containing structure
*
* @ptr: the pointer to the member.
* @type: the type of the container struct this is embedded in.
* @member: the name of the member within the struct.
*/
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
#endif /* __ASM_U_BOOT_H__ */

11
include/common.h
View file

@ -176,6 +176,17 @@ typedef void (interrupt_handler_t)(void *);
(__x > __y) ? __x : __y; })
/**
* container_of - cast a member of a structure out to the containing structure
* @ptr: the pointer to the member.
* @type: the type of the container struct this is embedded in.
* @member: the name of the member within the struct.
*
*/
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
/*
* Function Prototypes
*/