76 static int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td)  in check_pattern()  argument
91 	for (i = 0; i < td->len; i++) {  in check_pattern()
97 		p += td->len;  in check_pattern()
98 		end += td->len;  in check_pattern()
99 		for (i = end; i < len; i++) {  in check_pattern()
123 	for (i = 0; i < td->len; i++) {  in check_short_pattern()
148 	size_t retlen, len, totlen;  in read_bbt()  local
156 		len = min(totlen, (size_t) (1 << this->bbt_erase_shift));  in read_bbt()
157 		res = mtd->read(mtd, from, len, &retlen, buf);  in read_bbt()
159 			if (retlen != len) {  in read_bbt()
167 		for (i = 0; i < len; i++) {  in read_bbt()
192 		totlen -= len;  in read_bbt()
193 		from += len;  in read_bbt()
237 			 size_t len)  in scan_read_raw()  argument
246 	ops.len = len;  in scan_read_raw()
254 static int scan_write_bbt(struct mtd_info *mtd, loff_t offs, size_t len,  in scan_write_bbt()  argument
264 	ops.len = len;  in scan_write_bbt()
310 			   int scanlen, int len)  in scan_block_full()  argument
318 	for (j = 0; j < len; j++, buf += scanlen) {  in scan_block_full()
329 			   loff_t offs, uint8_t *buf, int len)  in scan_block_fast()  argument
340 	for (j = 0; j < len; j++) {  in scan_block_fast()
373 	int i, numblocks, len, scanlen;  in create_bbt()  local
381 		len = 1 << (this->bbt_erase_shift - this->page_shift);  in create_bbt()
384 			len = 2;  in create_bbt()
386 			len = 1;  in create_bbt()
392 		readlen = bd->len;  in create_bbt()
396 		readlen = len * mtd->writesize;  in create_bbt()
422 					      scanlen, len);  in create_bbt()
424 			ret = scan_block_fast(mtd, bd, from, buf, len);  in create_bbt()
568 	size_t retlen, len = 0;  in write_bbt()  local
662 			len = 1 << this->bbt_erase_shift;  in write_bbt()
663 			res = mtd->read(mtd, to, len, &retlen, buf);  in write_bbt()
665 				if (retlen != len) {  in write_bbt()
676 			ops.ooblen = (len >> this->page_shift) * mtd->oobsize;  in write_bbt()
677 			ops.oobbuf = &buf[len];  in write_bbt()
687 			ooboffs = len + (pageoffs * mtd->oobsize);  in write_bbt()
691 			len = (size_t) (numblocks >> sft);  in write_bbt()
693 			len = (len + (mtd->writesize - 1)) &  in write_bbt()
696 			memset(buf, 0xff, len +  in write_bbt()
697 			       (len >> this->page_shift)* mtd->oobsize);  in write_bbt()
699 			ooboffs = len;  in write_bbt()
701 			memcpy(&buf[ooboffs + td->offs], td->pattern, td->len);  in write_bbt()
723 		einfo.len = 1 << this->bbt_erase_shift;  in write_bbt()
728 		res = scan_write_bbt(mtd, to, len, buf, &buf[len]);  in write_bbt()
955 	int len, res = 0;  in nand_scan_bbt()  local
960 	len = mtd->size >> (this->bbt_erase_shift + 2);  in nand_scan_bbt()
962 	this->bbt = kzalloc(len, GFP_KERNEL);  in nand_scan_bbt()
981 	len = (1 << this->bbt_erase_shift);  in nand_scan_bbt()
982 	len += (len >> this->page_shift) * mtd->oobsize;  in nand_scan_bbt()
983 	buf = vmalloc(len);  in nand_scan_bbt()
1021 	int len, res = 0, writeops = 0;  in nand_update_bbt()  local
1031 	len = (1 << this->bbt_erase_shift);  in nand_update_bbt()
1032 	len += (len >> this->page_shift) * mtd->oobsize;  in nand_update_bbt()
1033 	buf = kmalloc(len, GFP_KERNEL);  in nand_update_bbt()
1077 	.len = 1,
1084 	.len = 2,
1091 	.len = 1,
1098 	.len = 2,
1107 	.len = 6,
1120 	.len = 4,
1130 	.len = 4,