diff options
Diffstat (limited to 'include/linux/nvram.h')
| -rw-r--r-- | include/linux/nvram.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/nvram.h b/include/linux/nvram.h index eb5b52a9a747..a1e01dc89759 100644 --- a/include/linux/nvram.h +++ b/include/linux/nvram.h @@ -5,8 +5,18 @@ #include <linux/errno.h> #include <uapi/linux/nvram.h> +struct nvram_ops { + ssize_t (*get_size)(void); + ssize_t (*read)(char *, size_t, loff_t *); + ssize_t (*write)(char *, size_t, loff_t *); +}; + +extern const struct nvram_ops arch_nvram_ops; + static inline ssize_t nvram_get_size(void) { + if (arch_nvram_ops.get_size) + return arch_nvram_ops.get_size(); return -ENODEV; } @@ -21,11 +31,15 @@ static inline void nvram_write_byte(unsigned char val, int addr) static inline ssize_t nvram_read(char *buf, size_t count, loff_t *ppos) { + if (arch_nvram_ops.read) + return arch_nvram_ops.read(buf, count, ppos); return -ENODEV; } static inline ssize_t nvram_write(char *buf, size_t count, loff_t *ppos) { + if (arch_nvram_ops.write) + return arch_nvram_ops.write(buf, count, ppos); return -ENODEV; } |