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| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2011-01-30 18:37:33 +0200 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2011-03-08 10:12:48 +0200 |
| commit | 30b542ef453e6832ff682170b2db95d7bca2fe70 (patch) | |
| tree | a74ccffb6a4eebb6ec8f9d3aa2d152700f995830 /drivers/mtd/ubi/build.c | |
| parent | 10ac27970274e9094aee84a6452a25bf1b7e59e1 (diff) | |
| download | op-kernel-dev-30b542ef453e6832ff682170b2db95d7bca2fe70.zip op-kernel-dev-30b542ef453e6832ff682170b2db95d7bca2fe70.tar.gz | |
UBI: incorporate maximum write size
Incorporate MTD write buffer size into UBI device information
because UBIFS needs this field. UBI does not use it ATM, just
provides to upper layers in 'struct ubi_device_info'.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi/build.c')
| -rw-r--r-- | drivers/mtd/ubi/build.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index 5ebe280..f38e8de 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -690,11 +690,25 @@ static int io_init(struct ubi_device *ubi) ubi_assert(ubi->hdrs_min_io_size <= ubi->min_io_size); ubi_assert(ubi->min_io_size % ubi->hdrs_min_io_size == 0); + ubi->max_write_size = ubi->mtd->writebufsize; + /* + * Maximum write size has to be greater or equivalent to min. I/O + * size, and be multiple of min. I/O size. + */ + if (ubi->max_write_size < ubi->min_io_size || + ubi->max_write_size % ubi->min_io_size || + !is_power_of_2(ubi->max_write_size)) { + ubi_err("bad write buffer size %d for %d min. I/O unit", + ubi->max_write_size, ubi->min_io_size); + return -EINVAL; + } + /* Calculate default aligned sizes of EC and VID headers */ ubi->ec_hdr_alsize = ALIGN(UBI_EC_HDR_SIZE, ubi->hdrs_min_io_size); ubi->vid_hdr_alsize = ALIGN(UBI_VID_HDR_SIZE, ubi->hdrs_min_io_size); dbg_msg("min_io_size %d", ubi->min_io_size); + dbg_msg("max_write_size %d", ubi->max_write_size); dbg_msg("hdrs_min_io_size %d", ubi->hdrs_min_io_size); dbg_msg("ec_hdr_alsize %d", ubi->ec_hdr_alsize); dbg_msg("vid_hdr_alsize %d", ubi->vid_hdr_alsize); |
