[PATCH 5/9] MTD: export few functions from nand_base.c

Maxim Levitsky
2010-01-12T19:33:45Z

>From 5af23e4a8b1459ae53f7c39d7f3890b75ebf51a5 Mon Sep 17 00:00:00 2001
From: Maxim Levitsky <maximlevitsky@gmail.com>
Date: Tue, 12 Jan 2010 20:59:31 +0200
Subject: [PATCH 5/9] MTD: export few functions from nand_base.c

This exports:

nand_do_read_oob
nand_do_write_oob
nand_get_device
nand_put_device

This functions will be used to implement custom oob based
bad block handling in upcoming smartmedia common module

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
---
drivers/mtd/nand/nand_base.c | 18 +++++++++---------
include/linux/mtd/nand.h | 12 ++++++++++++
2 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 8f2958f..13d1d67 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -96,11 +96,6 @@ static struct nand_ecclayout nand_oob_128 = {
.length = 78}}
};

-static int nand_get_device(struct nand_chip *chip, struct mtd_info *mtd,
- int new_state);
-
-static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
- struct mtd_oob_ops *ops);

/*
* For devices which display every fart in the system on a separate LED. Is
@@ -114,7 +109,7 @@ DEFINE_LED_TRIGGER(nand_led_trigger);
*
* Deselect, release chip lock and wake up anyone waiting on the device
*/
-static void nand_release_device(struct mtd_info *mtd)
+void nand_release_device(struct mtd_info *mtd)
{
struct nand_chip *chip = mtd->priv;

@@ -128,6 +123,7 @@ static void nand_release_device(struct mtd_info *mtd)
wake_up(&chip->controller->wq);
spin_unlock(&chip->controller->lock);
}
+EXPORT_SYMBOL_GPL(nand_release_device);

/**
* nand_read_byte - [DEFAULT] read one byte from the chip
@@ -721,7 +717,7 @@ static void panic_nand_get_device(struct nand_chip *chip,
*
* Get the device and lock it for exclusive access
*/
-static int
+int
nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state)
{
spinlock_t *lock = &chip->controller->lock;
@@ -756,6 +752,7 @@ nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state)
remove_wait_queue(wq, &wait);
goto retry;
}
+EXPORT_SYMBOL_GPL(nand_get_device);

/**
* panic_nand_wait - [GENERIC] wait until the command is done
@@ -1536,7 +1533,7 @@ static int nand_write_oob_syndrome(struct mtd_info *mtd,
*
* NAND read out-of-band data from the spare area
*/
-static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
+int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
struct mtd_oob_ops *ops)
{
int page, realpage, chipnr, sndcmd = 1;
@@ -1620,6 +1617,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
ops->oobretlen = ops->ooblen;
return 0;
}
+EXPORT_SYMBOL_GPL(nand_do_read_oob);

/**
* nand_read_oob - [MTD Interface] NAND read data and/or out-of-band
@@ -2110,7 +2108,7 @@ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len,
*
* NAND write out-of-band
*/
-static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
+int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
struct mtd_oob_ops *ops)
{
int chipnr, page, status, len;
@@ -2181,6 +2179,7 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,

return 0;
}
+EXPORT_SYMBOL_GPL(nand_do_write_oob);

/**
* nand_write_oob - [MTD Interface] NAND write data and/or out-of-band
@@ -3082,6 +3081,7 @@ EXPORT_SYMBOL_GPL(nand_scan_ident);
EXPORT_SYMBOL_GPL(nand_scan_tail);
EXPORT_SYMBOL_GPL(nand_release);

+
static int __init nand_base_init(void)
{
led_trigger_register_simple("nand-disk", &nand_led_trigger);
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index ccab9df..8c2333a 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -469,6 +469,18 @@ extern int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
extern int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t * retlen, uint8_t * buf);

+extern int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops);
+
+extern int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
+ struct mtd_oob_ops *ops);
+
+extern int nand_get_device(struct nand_chip *chip,
+ struct mtd_info *mtd, int new_state);
+
+extern void nand_release_device(struct mtd_info *mtd);
+
+
/**
* struct platform_nand_chip - chip level device structure
* @nr_chips: max. number of chips to scan for
--
1.6.3.3