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| author | Maxim Levitsky <maximlevitsky@gmail.com> | 2010-02-26 21:08:40 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-02-26 21:13:49 +0100 |
| commit | 133fa8c7d70d16b07db3a3d87ea18291db8f8ebf (patch) | |
| tree | 0a5a8ab311a46dbfd8cb3f90dce98adafc6c8473 /drivers/mtd/sm_ftl.c | |
| parent | mtd: nand: Add driver for Ricoh xD/SmartMedia reader (diff) | |
| download | linux-133fa8c7d70d16b07db3a3d87ea18291db8f8ebf.tar.xz linux-133fa8c7d70d16b07db3a3d87ea18291db8f8ebf.zip | |
mtd: Few follow up cleanups for Smartmedia/xD support
* Test results of few functions that were declared with __must_check
* Fix bogus gcc warning about uinitialized variable 'ret'
* Remove unused variable from mtdblock_remove_dev
* Don't use deprecated DMA_32BIT_MASK
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/sm_ftl.c')
| -rw-r--r-- | drivers/mtd/sm_ftl.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c index a59ebb48cae1..9fb56c76ae89 100644 --- a/drivers/mtd/sm_ftl.c +++ b/drivers/mtd/sm_ftl.c @@ -228,7 +228,7 @@ static int sm_read_sector(struct sm_ftl *ftl, struct mtd_info *mtd = ftl->trans->mtd; struct mtd_oob_ops ops; struct sm_oob tmp_oob; - int ret; + int ret = -EIO; int try = 0; /* FTL can contain -1 entries that are by default filled with bits */ @@ -753,6 +753,7 @@ static int sm_init_zone(struct sm_ftl *ftl, int zone_num) uint16_t block; int lba; int i = 0; + int len; dbg("initializing zone %d", zone_num); @@ -856,7 +857,9 @@ static int sm_init_zone(struct sm_ftl *ftl, int zone_num) i %= (kfifo_len(&zone->free_sectors) / 2); while (i--) { - kfifo_out(&zone->free_sectors, (unsigned char *)&block, 2); + len = kfifo_out(&zone->free_sectors, + (unsigned char *)&block, 2); + WARN_ON(len != 2); kfifo_in(&zone->free_sectors, (const unsigned char *)&block, 2); } return 0; @@ -947,17 +950,17 @@ restart: if (ftl->unstable) return -EIO; - /* No spare blocks */ - /* We could still continue by erasing the current block, + + /* If there are no spare blocks, */ + /* we could still continue by erasing/writing the current block, but for such worn out media it doesn't worth the trouble, and the dangers */ - - if (!kfifo_len(&zone->free_sectors)) { + if (kfifo_out(&zone->free_sectors, + (unsigned char *)&write_sector, 2) != 2) { dbg("no free sectors for write!"); return -EIO; } - kfifo_out(&zone->free_sectors, (unsigned char *)&write_sector, 2); if (sm_write_block(ftl, ftl->cache_data, zone_num, write_sector, ftl->cache_block, ftl->cache_data_invalid_bitmap)) |