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-rw-r--r--include/asm-powerpc/nvram.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/asm-powerpc/nvram.h b/include/asm-powerpc/nvram.h
index 9877982508b..4e7059cc611 100644
--- a/include/asm-powerpc/nvram.h
+++ b/include/asm-powerpc/nvram.h
@@ -10,6 +10,8 @@
#ifndef _ASM_POWERPC_NVRAM_H
#define _ASM_POWERPC_NVRAM_H
+#include <linux/errno.h>
+
#define NVRW_CNT 0x20
#define NVRAM_HEADER_LEN 16 /* sizeof(struct nvram_header) */
#define NVRAM_BLOCK_LEN 16
@@ -71,7 +73,16 @@ extern int nvram_clear_error_log(void);
extern struct nvram_partition *nvram_find_partition(int sig, const char *name);
extern int pSeries_nvram_init(void);
+
+#ifdef CONFIG_MMIO_NVRAM
extern int mmio_nvram_init(void);
+#else
+static inline int mmio_nvram_init(void)
+{
+ return -ENODEV;
+}
+#endif
+
#endif /* __KERNEL__ */
/* PowerMac specific nvram stuffs */