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| author | David Vrabel <david.vrabel@csr.com> | 2008-10-20 19:07:19 +0400 |
|---|---|---|
| committer | David Vrabel <david.vrabel@csr.com> | 2008-10-20 19:07:19 +0400 |
| commit | 61e0e79ee3c609eb34edf2fe023708cba6a79b1f (patch) | |
| tree | 663deacffd4071120dc9badb70428fe5f124c7b9 /drivers/mtd/ftl.c | |
| parent | c15895ef30c2c03e99802951787183039a349d32 (diff) | |
| parent | 0cfd81031a26717fe14380d18275f8e217571615 (diff) | |
| download | linux-61e0e79ee3c609eb34edf2fe023708cba6a79b1f.tar.xz | |
Merge branch 'master' into for-upstream
Conflicts:
Documentation/ABI/testing/sysfs-bus-usb
drivers/Makefile
Diffstat (limited to 'drivers/mtd/ftl.c')
| -rw-r--r-- | drivers/mtd/ftl.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c index f34f20c78911..9bf581c4f740 100644 --- a/drivers/mtd/ftl.c +++ b/drivers/mtd/ftl.c @@ -1005,6 +1005,29 @@ static int ftl_writesect(struct mtd_blktrans_dev *dev, return ftl_write((void *)dev, buf, block, 1); } +static int ftl_discardsect(struct mtd_blktrans_dev *dev, + unsigned long sector, unsigned nr_sects) +{ + partition_t *part = (void *)dev; + uint32_t bsize = 1 << part->header.EraseUnitSize; + + DEBUG(1, "FTL erase sector %ld for %d sectors\n", + sector, nr_sects); + + while (nr_sects) { + uint32_t old_addr = part->VirtualBlockMap[sector]; + if (old_addr != 0xffffffff) { + part->VirtualBlockMap[sector] = 0xffffffff; + part->EUNInfo[old_addr/bsize].Deleted++; + if (set_bam_entry(part, old_addr, 0)) + return -EIO; + } + nr_sects--; + sector++; + } + + return 0; +} /*====================================================================*/ static void ftl_freepart(partition_t *part) @@ -1069,6 +1092,7 @@ static struct mtd_blktrans_ops ftl_tr = { .blksize = SECTOR_SIZE, .readsect = ftl_readsect, .writesect = ftl_writesect, + .discard = ftl_discardsect, .getgeo = ftl_getgeo, .add_mtd = ftl_add_mtd, .remove_dev = ftl_remove_dev, |