X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=yaffs_tagscompat.c;h=56ac906d6c5c8141589257e65ee7116d137cee2a;hp=35d33c91fcee285ec557bac232e909a5faee31e4;hb=6648cbf52d6695755941ff8607fd7a0cda542e05;hpb=511baf572f96c689043518d443086b8dd6751089 diff --git a/yaffs_tagscompat.c b/yaffs_tagscompat.c index 35d33c9..56ac906 100644 --- a/yaffs_tagscompat.c +++ b/yaffs_tagscompat.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2010 Aleph One Ltd. + * Copyright (C) 2002-2011 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning @@ -305,9 +305,7 @@ int yaffs_tags_compat_wr(struct yaffs_dev *dev, yaffs_calc_ecc(data, &spare); yaffs_load_tags_to_spare(&spare, &tags); - } - return yaffs_wr_nand(dev, nand_chunk, data, &spare); } @@ -320,48 +318,44 @@ int yaffs_tags_compat_rd(struct yaffs_dev *dev, enum yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_UNKNOWN; static struct yaffs_spare spare_ff; static int init; + int deleted; if (!init) { memset(&spare_ff, 0xFF, sizeof(spare_ff)); init = 1; } - if (yaffs_rd_chunk_nand(dev, nand_chunk, - data, &spare, &ecc_result, 1)) { - /* ext_tags may be NULL */ - if (ext_tags) { - - int deleted = - (hweight8(spare.page_status) < 7) ? 1 : 0; + if (!yaffs_rd_chunk_nand(dev, nand_chunk, + data, &spare, &ecc_result, 1)) + return YAFFS_FAIL; - ext_tags->is_deleted = deleted; - ext_tags->ecc_result = ecc_result; - ext_tags->block_bad = 0; /* We're reading it */ - /* therefore it is not a bad block */ - ext_tags->chunk_used = - (memcmp(&spare_ff, &spare, sizeof(spare_ff)) != - 0) ? 1 : 0; + /* ext_tags may be NULL */ + if (!ext_tags) + return YAFFS_OK; - if (ext_tags->chunk_used) { - yaffs_get_tags_from_spare(dev, &spare, &tags); + deleted = (hweight8(spare.page_status) < 7) ? 1 : 0; - ext_tags->obj_id = tags.obj_id; - ext_tags->chunk_id = tags.chunk_id; - ext_tags->n_bytes = tags.n_bytes_lsb; + ext_tags->is_deleted = deleted; + ext_tags->ecc_result = ecc_result; + ext_tags->block_bad = 0; /* We're reading it */ + /* therefore it is not a bad block */ + ext_tags->chunk_used = + memcmp(&spare_ff, &spare, sizeof(spare_ff)) ? 1 : 0; - if (dev->data_bytes_per_chunk >= 1024) - ext_tags->n_bytes |= - (((unsigned)tags. - n_bytes_msb) << 10); + if (ext_tags->chunk_used) { + yaffs_get_tags_from_spare(dev, &spare, &tags); + ext_tags->obj_id = tags.obj_id; + ext_tags->chunk_id = tags.chunk_id; + ext_tags->n_bytes = tags.n_bytes_lsb; - ext_tags->serial_number = tags.serial_number; - } - } + if (dev->data_bytes_per_chunk >= 1024) + ext_tags->n_bytes |= + (((unsigned)tags.n_bytes_msb) << 10); - return YAFFS_OK; - } else { - return YAFFS_FAIL; + ext_tags->serial_number = tags.serial_number; } + + return YAFFS_OK; } int yaffs_tags_compat_mark_bad(struct yaffs_dev *dev, int flash_block) @@ -407,7 +401,7 @@ int yaffs_tags_compat_query_block(struct yaffs_dev *dev, else if (memcmp(&spare_ff, &spare0, sizeof(spare_ff)) == 0) *state = YAFFS_BLOCK_STATE_EMPTY; else - *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; + *state = YAFFS_BLOCK_STATE_NEEDS_SCAN; return YAFFS_OK; }