mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 06:18:54 +00:00
681ea4b930
This patch contains the following possible cleanups: - make the needlessly global function __nvram_set_checksum static - #if 0 the unused global function nvram_set_checksum - remove the EXPORT_SYMBOL's for both functions Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
26 lines
844 B
C
26 lines
844 B
C
#ifndef _LINUX_NVRAM_H
|
|
#define _LINUX_NVRAM_H
|
|
|
|
#include <linux/ioctl.h>
|
|
|
|
/* /dev/nvram ioctls */
|
|
#define NVRAM_INIT _IO('p', 0x40) /* initialize NVRAM and set checksum */
|
|
#define NVRAM_SETCKS _IO('p', 0x41) /* recalculate checksum */
|
|
|
|
/* for all current systems, this is where NVRAM starts */
|
|
#define NVRAM_FIRST_BYTE 14
|
|
/* all these functions expect an NVRAM offset, not an absolute */
|
|
#define NVRAM_OFFSET(x) ((x)-NVRAM_FIRST_BYTE)
|
|
|
|
#ifdef __KERNEL__
|
|
/* __foo is foo without grabbing the rtc_lock - get it yourself */
|
|
extern unsigned char __nvram_read_byte(int i);
|
|
extern unsigned char nvram_read_byte(int i);
|
|
extern void __nvram_write_byte(unsigned char c, int i);
|
|
extern void nvram_write_byte(unsigned char c, int i);
|
|
extern int __nvram_check_checksum(void);
|
|
extern int nvram_check_checksum(void);
|
|
#endif
|
|
|
|
#endif /* _LINUX_NVRAM_H */
|