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Subject[RFC 18/24] nvram: Drop nvram_* symbol exports and prototypes
Drivers now use the arch_nvram_ops calls so remove the function exports and
prototypes. nvram_check_checksum() is unused so remove it.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>

---
arch/m68k/atari/nvram.c | 6 +++---
drivers/char/nvram.c | 27 +++++----------------------
include/linux/nvram.h | 8 --------
3 files changed, 8 insertions(+), 33 deletions(-)

Index: linux/drivers/char/nvram.c
===================================================================
--- linux.orig/drivers/char/nvram.c 2015-05-31 11:01:17.000000000 +1000
+++ linux/drivers/char/nvram.c 2015-05-31 11:01:21.000000000 +1000
@@ -82,13 +82,12 @@ static ssize_t nvram_size;
* periodic 11 min sync from kernel/time/ntp.c vs. this driver.)
*/

-unsigned char __nvram_read_byte(int i)
+static unsigned char __nvram_read_byte(int i)
{
return CMOS_READ(NVRAM_FIRST_BYTE + i);
}
-EXPORT_SYMBOL(__nvram_read_byte);

-unsigned char nvram_read_byte(int i)
+static unsigned char nvram_read_byte(int i)
{
unsigned long flags;
unsigned char c;
@@ -98,16 +97,14 @@ unsigned char nvram_read_byte(int i)
spin_unlock_irqrestore(&rtc_lock, flags);
return c;
}
-EXPORT_SYMBOL(nvram_read_byte);

/* This races nicely with trying to read with checksum checking (nvram_read) */
-void __nvram_write_byte(unsigned char c, int i)
+static void __nvram_write_byte(unsigned char c, int i)
{
CMOS_WRITE(c, NVRAM_FIRST_BYTE + i);
}
-EXPORT_SYMBOL(__nvram_write_byte);

-void nvram_write_byte(unsigned char c, int i)
+static void nvram_write_byte(unsigned char c, int i)
{
unsigned long flags;

@@ -115,14 +112,13 @@ void nvram_write_byte(unsigned char c, i
__nvram_write_byte(c, i);
spin_unlock_irqrestore(&rtc_lock, flags);
}
-EXPORT_SYMBOL(nvram_write_byte);

/* On PCs, the checksum is built only over bytes 2..31 */
#define PC_CKS_RANGE_START 2
#define PC_CKS_RANGE_END 31
#define PC_CKS_LOC 32

-int __nvram_check_checksum(void)
+static int __nvram_check_checksum(void)
{
int i;
unsigned short sum = 0;
@@ -134,19 +130,6 @@ int __nvram_check_checksum(void)
__nvram_read_byte(PC_CKS_LOC+1);
return (sum & 0xffff) == expect;
}
-EXPORT_SYMBOL(__nvram_check_checksum);
-
-int nvram_check_checksum(void)
-{
- unsigned long flags;
- int rv;
-
- spin_lock_irqsave(&rtc_lock, flags);
- rv = __nvram_check_checksum();
- spin_unlock_irqrestore(&rtc_lock, flags);
- return rv;
-}
-EXPORT_SYMBOL(nvram_check_checksum);

static void __nvram_set_checksum(void)
{
Index: linux/include/linux/nvram.h
===================================================================
--- linux.orig/include/linux/nvram.h 2015-05-31 11:01:17.000000000 +1000
+++ linux/include/linux/nvram.h 2015-05-31 11:01:21.000000000 +1000
@@ -3,14 +3,6 @@

#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);
-
struct nvram_ops {
ssize_t (*read)(char *, size_t, loff_t *);
ssize_t (*write)(char *, size_t, loff_t *);
Index: linux/arch/m68k/atari/nvram.c
===================================================================
--- linux.orig/arch/m68k/atari/nvram.c 2015-05-31 11:01:11.000000000 +1000
+++ linux/arch/m68k/atari/nvram.c 2015-05-31 11:01:21.000000000 +1000
@@ -33,13 +33,13 @@
* periodic 11 min sync from kernel/time/ntp.c vs. this driver.)
*/

-unsigned char __nvram_read_byte(int i)
+static unsigned char __nvram_read_byte(int i)
{
return CMOS_READ(NVRAM_FIRST_BYTE + i);
}

/* This races nicely with trying to read with checksum checking */
-void __nvram_write_byte(unsigned char c, int i)
+static void __nvram_write_byte(unsigned char c, int i)
{
CMOS_WRITE(c, NVRAM_FIRST_BYTE + i);
}
@@ -51,7 +51,7 @@ void __nvram_write_byte(unsigned char c,
#define ATARI_CKS_RANGE_END 47
#define ATARI_CKS_LOC 48

-int __nvram_check_checksum(void)
+static int __nvram_check_checksum(void)
{
int i;
unsigned char sum = 0;



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