nvram: Replace nvram_* function exports with static functions

Replace nvram_* functions with static functions in nvram.h. These will
become wrappers for struct nvram_ops method calls.

This patch effectively disables existing NVRAM functionality so as to
allow the rest of the series to be bisected without build failures.
That functionality is gradually re-implemented in subsequent patches.

Replace the sole validate-checksum-and-read-byte sequence with a call to
nvram_read() which will gain the same semantics in subsequent patches.

Remove unused exports.

Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 25 insertions, 7 deletions

diff --git a/include/linux/nvram.h b/include/linux/nvram.h
index 28bfb9ab94ca..eb5b52a9a747 100644
--- a/include/linux/nvram.h
+++ b/include/linux/nvram.h
@@ -2,13 +2,31 @@
 #ifndef _LINUX_NVRAM_H
 #define _LINUX_NVRAM_H
 
+#include <linux/errno.h>
 #include <uapi/linux/nvram.h>
 
-/* __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);
+static inline ssize_t nvram_get_size(void)
+{
+	return -ENODEV;
+}
+
+static inline unsigned char nvram_read_byte(int addr)
+{
+	return 0xFF;
+}
+
+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)
+{
+	return -ENODEV;
+}
+
+static inline ssize_t nvram_write(char *buf, size_t count, loff_t *ppos)
+{
+	return -ENODEV;
+}
+
 #endif  /* _LINUX_NVRAM_H */