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Commit 3a3ab48c authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Thomas Gleixner
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[MTD] Make map_word_ff ware of the flash buswidth 



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: default avatarThomas Gleixner <tglx@linutronix.de>
parent 22fd9a87

include/linux/mtd/map.h

+13 −4
Original line number Diff line number Diff line 


/* 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__
@@ -340,12 +340,21 @@ 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++) {

	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;