#1: mods to allow EUCLEAN and EBADMSG to percolate up into YAFFS bbt handling

diff -r yaffs2-8a3135f/yaffs_mtdif2_multi.c yaffs2-8a3135f.patched/yaffs_mtdif2_multi.c
194c194
< 	    && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) {
---
> 	    /* KAM && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR*/) {
199c199
< 	    && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) {
---
> 	    /* KAM && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR*/) {


#2: mods to create new yaffs mount option "chunk-error-strikes-max-xx"

diff -r yaffs2-8a3135f/yaffs_guts.c yaffs2-8a3135f.patched/yaffs_guts.c
37a38,41
> /* Extern declarations */
> 
> extern unsigned int yaffs_chunk_error_strikes_max; // KAM: see: yaffs_vfs_multi.c
> 
219c223
< 		if (bi->chunk_error_strikes > 3) {
---
> 		if (bi->chunk_error_strikes > yaffs_chunk_error_strikes_max) {
diff -r yaffs2-8a3135f/yaffs_vfs_multi.c yaffs2-8a3135f.patched/yaffs_vfs_multi.c
38a39
> #include <linux/kernel.h> // KAM - for simple_strtol
187a189,190
> unsigned int yaffs_chunk_error_strikes_max = 3; // KAM - could not find a way to access options in yaffs_guts.c - created global
> 
2540a2544
> 	int chunk_error_strikes_max; // KAM
2542a2547,2561
> // KAM - start new code
> #define STRIKES_OPTION_PREFIX "chunk-error-strikes-max-"
> 
> static int get_strikes_from_option(char* option) {
> 	int strikes = 3; // default
> 	char* start = strstr(option, STRIKES_OPTION_PREFIX);
> 	if (start != NULL) {
> 		char* end;
> 		start = start + strlen(STRIKES_OPTION_PREFIX); // skip prefix
> 		strikes = (int)simple_strtol(start,&end,10);
> 	}
> 	return strikes;
> }
> // KAM - end new code
> 
2598a2618,2619
> 		} else if (strstr(cur_opt, STRIKES_OPTION_PREFIX) != NULL) {             // KAM
> 			options->chunk_error_strikes_max = get_strikes_from_option(cur_opt); // KAM
2717a2739,2741
> 	yaffs_trace(YAFFS_TRACE_OS, "chunk_error_strikes_max %d", options.chunk_error_strikes_max);  // KAM
> 	yaffs_chunk_error_strikes_max = options.chunk_error_strikes_max;                             // KAM - could not find a way to access options in yaffs_guts.c - created global
>