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[MTD] Make map_word_ff ware of the flash buswidth

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map_word_ff() was setting the mapword to ~0UL regardless of the
buswidth of the mapped flash chip. The read_map functions are
buswidth aware and therefor the map_word_equal function failed.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2005-05-24 20:50:18 +02:00 committed by Thomas Gleixner
parent 22fd9a8750
commit 3a3ab48c68
1 changed files with 13 additions and 4 deletions
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17
include/linux/mtd/map.h
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@ -1,6 +1,6 @@
/* Overhauled routines for dealing with different mmap regions of flash */
/* $Id: map.h,v 1.48 2005/02/16 15:54:59 nico Exp $ */
/* $Id: map.h,v 1.49 2005/05/24 18:45:15 gleixner Exp $ */
#ifndef __LINUX_MTD_MAP_H__
#define __LINUX_MTD_MAP_H__
@ -340,13 +340,22 @@ static inline map_word map_word_load_partial(struct map_info *map, map_word orig
return orig;
}
#if BITS_PER_LONG < 64
#define MAP_FF_LIMIT 4
#else
#define MAP_FF_LIMIT 8
#endif
static inline map_word map_word_ff(struct map_info *map)
{
map_word r;
int i;
for (i=0; i<map_words(map); i++) {
r.x[i] = ~0UL;
if (map_bank_width(map) < MAP_FF_LIMIT) {
r.x[0] = (1 << (8*map_bank_width(map))) - 1;
} else {
for (i=0; i<map_words(map); i++)
r.x[i] = ~0UL;
}
return r;
}