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Diffstat (limited to 'drivers/mtd/mtdblock.c')
-rw-r--r--drivers/mtd/mtdblock.c52
1 files changed, 27 insertions, 25 deletions
diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c
index b7c32c242bc..e84756644fd 100644
--- a/drivers/mtd/mtdblock.c
+++ b/drivers/mtd/mtdblock.c
@@ -1,20 +1,22 @@
-/*
+/*
* Direct MTD block device access
*
- * $Id: mtdblock.c,v 1.66 2004/11/25 13:52:52 joern Exp $
+ * $Id: mtdblock.c,v 1.68 2005/11/07 11:14:20 gleixner Exp $
*
* (C) 2000-2003 Nicolas Pitre <nico@cam.org>
* (C) 1999-2003 David Woodhouse <dwmw2@infradead.org>
*/
#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
#include <linux/slab.h>
+#include <linux/types.h>
#include <linux/vmalloc.h>
+
#include <linux/mtd/mtd.h>
#include <linux/mtd/blktrans.h>
@@ -30,7 +32,7 @@ static struct mtdblk_dev {
/*
* Cache stuff...
- *
+ *
* Since typical flash erasable sectors are much larger than what Linux's
* buffer cache can handle, we must implement read-modify-write on flash
* sectors for each block write requests. To avoid over-erasing flash sectors
@@ -44,7 +46,7 @@ static void erase_callback(struct erase_info *done)
wake_up(wait_q);
}
-static int erase_write (struct mtd_info *mtd, unsigned long pos,
+static int erase_write (struct mtd_info *mtd, unsigned long pos,
int len, const char *buf)
{
struct erase_info erase;
@@ -102,18 +104,18 @@ static int write_cached_data (struct mtdblk_dev *mtdblk)
return 0;
DEBUG(MTD_DEBUG_LEVEL2, "mtdblock: writing cached data for \"%s\" "
- "at 0x%lx, size 0x%x\n", mtd->name,
+ "at 0x%lx, size 0x%x\n", mtd->name,
mtdblk->cache_offset, mtdblk->cache_size);
-
- ret = erase_write (mtd, mtdblk->cache_offset,
+
+ ret = erase_write (mtd, mtdblk->cache_offset,
mtdblk->cache_size, mtdblk->cache_data);
if (ret)
return ret;
/*
* Here we could argubly set the cache state to STATE_CLEAN.
- * However this could lead to inconsistency since we will not
- * be notified if this content is altered on the flash by other
+ * However this could lead to inconsistency since we will not
+ * be notified if this content is altered on the flash by other
* means. Let's declare it empty and leave buffering tasks to
* the buffer cache instead.
*/
@@ -122,7 +124,7 @@ static int write_cached_data (struct mtdblk_dev *mtdblk)
}
-static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
+static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
int len, const char *buf)
{
struct mtd_info *mtd = mtdblk->mtd;
@@ -132,7 +134,7 @@ static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
DEBUG(MTD_DEBUG_LEVEL2, "mtdblock: write on \"%s\" at 0x%lx, size 0x%x\n",
mtd->name, pos, len);
-
+
if (!sect_size)
return MTD_WRITE (mtd, pos, len, &retlen, buf);
@@ -140,11 +142,11 @@ static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
unsigned long sect_start = (pos/sect_size)*sect_size;
unsigned int offset = pos - sect_start;
unsigned int size = sect_size - offset;
- if( size > len )
+ if( size > len )
size = len;
if (size == sect_size) {
- /*
+ /*
* We are covering a whole sector. Thus there is no
* need to bother with the cache while it may still be
* useful for other partial writes.
@@ -158,7 +160,7 @@ static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
if (mtdblk->cache_state == STATE_DIRTY &&
mtdblk->cache_offset != sect_start) {
ret = write_cached_data(mtdblk);
- if (ret)
+ if (ret)
return ret;
}
@@ -191,7 +193,7 @@ static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
}
-static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
+static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
int len, char *buf)
{
struct mtd_info *mtd = mtdblk->mtd;
@@ -199,9 +201,9 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
size_t retlen;
int ret;
- DEBUG(MTD_DEBUG_LEVEL2, "mtdblock: read on \"%s\" at 0x%lx, size 0x%x\n",
+ DEBUG(MTD_DEBUG_LEVEL2, "mtdblock: read on \"%s\" at 0x%lx, size 0x%x\n",
mtd->name, pos, len);
-
+
if (!sect_size)
return MTD_READ (mtd, pos, len, &retlen, buf);
@@ -209,7 +211,7 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
unsigned long sect_start = (pos/sect_size)*sect_size;
unsigned int offset = pos - sect_start;
unsigned int size = sect_size - offset;
- if (size > len)
+ if (size > len)
size = len;
/*
@@ -267,12 +269,12 @@ static int mtdblock_open(struct mtd_blktrans_dev *mbd)
int dev = mbd->devnum;
DEBUG(MTD_DEBUG_LEVEL1,"mtdblock_open\n");
-
+
if (mtdblks[dev]) {
mtdblks[dev]->count++;
return 0;
}
-
+
/* OK, it's not open. Create cache info for it */
mtdblk = kmalloc(sizeof(struct mtdblk_dev), GFP_KERNEL);
if (!mtdblk)
@@ -291,7 +293,7 @@ static int mtdblock_open(struct mtd_blktrans_dev *mbd)
}
mtdblks[dev] = mtdblk;
-
+
DEBUG(MTD_DEBUG_LEVEL1, "ok\n");
return 0;
@@ -319,7 +321,7 @@ static int mtdblock_release(struct mtd_blktrans_dev *mbd)
DEBUG(MTD_DEBUG_LEVEL1, "ok\n");
return 0;
-}
+}
static int mtdblock_flush(struct mtd_blktrans_dev *dev)
{