diff options
| author |   Selvan Mani <smani@micron.com> | 2012-11-07 06:03:53 -0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2012-11-23 14:32:55 +0100 |
| commit | eda45314922f500f3547d36d317efc05ed823e3e (patch) | |
| tree | 8486c7d169c4166511cae5b39abe6191016cfeef /drivers/block/mtip32xx/mtip32xx.c | |
| parent | mtip32xx: fix potential crash on SEC_ERASE_UNIT (diff) | |
| download | linux-dev-eda45314922f500f3547d36d317efc05ed823e3e.tar.xz linux-dev-eda45314922f500f3547d36d317efc05ed823e3e.zip | |
mtip32xx: Fix to make lba address correct in big-endian systems
Earlier lba address was assigned directly to lba_low and lba_low_ex,
which would result in a different number (bytes reversed) in
big-endian systems. Now assigning lba address byte-by-byte to fis.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Selvan Mani <smani@micron.com>
Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to '')
| -rw-r--r-- | drivers/block/mtip32xx/mtip32xx.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index dfb7196bbde9..df46b5a3f56f 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -2465,8 +2465,12 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t start, fis->opts = 1 << 7; fis->command = (dir == READ ? ATA_CMD_FPDMA_READ : ATA_CMD_FPDMA_WRITE); - *((unsigned int *) &fis->lba_low) = (start & 0xFFFFFF); - *((unsigned int *) &fis->lba_low_ex) = ((start >> 24) & 0xFFFFFF); + fis->lba_low = start & 0xFF; + fis->lba_mid = (start >> 8) & 0xFF; + fis->lba_hi = (start >> 16) & 0xFF; + fis->lba_low_ex = (start >> 24) & 0xFF; + fis->lba_mid_ex = (start >> 32) & 0xFF; + fis->lba_hi_ex = (start >> 40) & 0xFF; fis->device = 1 << 6; fis->features = nsect & 0xFF; fis->features_ex = (nsect >> 8) & 0xFF; |