32  * nanddev_read_bbt() - Read the BBT (Bad Block Table)
34  * @block: bbt block address
35  * @update: true - get version and overwrite bbt.cache with new version;
36  *	false - get bbt version only;
38  * Initialize the in-memory BBT.
47 					   BITS_PER_LONG) * sizeof(*nand->bbt.cache);  in nanddev_read_bbt()
57 	if (!nand->bbt.cache)  in nanddev_read_bbt()
114 	if (update && version > nand->bbt.version) {  in nanddev_read_bbt()
115 		memcpy(nand->bbt.cache, data_buf, nbytes);  in nanddev_read_bbt()
116 		nand->bbt.version = version;  in nanddev_read_bbt()
131 					   BITS_PER_LONG) * sizeof(*nand->bbt.cache);  in nanddev_write_bbt()
140 	BBT_DBG("write_bbt to blk=%d ver=%d\n", block, nand->bbt.version);  in nanddev_write_bbt()
141 	if (!nand->bbt.cache)  in nanddev_write_bbt()
164 	memcpy(data_buf, nand->bbt.cache, nbytes);  in nanddev_write_bbt()
166 	bbt_info->version = nand->bbt.version;  in nanddev_write_bbt()
239 	nand->bbt.version = 0;  in nanddev_scan_bbt()
244 	nand->bbt.option |= NANDDEV_BBT_SCANNED;  in nanddev_scan_bbt()
245 	if (nand->bbt.version == 0) {  in nanddev_scan_bbt()
249 			nand->bbt.option = 0;  in nanddev_scan_bbt()
260  * nanddev_bbt_init() - Initialize the BBT (Bad Block Table)
263  * Initialize the in-memory BBT.
274 	nand->bbt.cache = kcalloc(nwords, sizeof(*nand->bbt.cache),  in snanddev_bbt_init()
276 	if (!nand->bbt.cache)  in snanddev_bbt_init()
284  * nanddev_bbt_cleanup() - Cleanup the BBT (Bad Block Table)
291 	kfree(nand->bbt.cache);  in snanddev_bbt_cleanup()
296  * nanddev_bbt_update() - Update a BBT
299  * Update the BBT. Currently a NOP function since on-flash bbt is not yet
307 	if (nand->bbt.cache &&  in snanddev_bbt_update()
308 	    nand->bbt.option & NANDDEV_BBT_USE_FLASH) {  in snanddev_bbt_update()
342 			nand->bbt.version++;  in snanddev_bbt_update()
369  * @entry: the BBT entry
372  *	   is bigger than the BBT size.
378 	unsigned long *pos = nand->bbt.cache +  in snanddev_bbt_get_block_status()
384 	if (nand->bbt.option & NANDDEV_BBT_USE_FLASH &&  in snanddev_bbt_get_block_status()
385 	    !(nand->bbt.option & NANDDEV_BBT_SCANNED))  in snanddev_bbt_get_block_status()
402  *				    in-memory BBT
404  * @entry: the BBT entry to update
407  * Update an entry of the in-memory BBT. If you want to push the updated BBT
410  * Return: 0 in case of success or -%ERANGE if @entry is bigger than the BBT
418 	unsigned long *pos = nand->bbt.cache +  in snanddev_bbt_set_block_status()