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scsi: smartpqi: raid bypass lba calculation fix 

In the ioaccel path, the calculation of the starting LBA for
READ(6)/WRITE(6) SCSI commands does not take into account the most
significant 5 bits of the LBA: it only uses the least significant 16
bits of the starting LBA.

Reported-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
kevin Barnett 2016-09-16 15:01:51 -05:00 committed by Martin K. Petersen
parent abbada7175
commit e018ef572b
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/smartpqi/smartpqi_init.c
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@ -1954,7 +1954,8 @@ static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
is_write = true; is_write = true;
/* fall through */ /* fall through */
case READ_6: case READ_6:
first_block = (u64)get_unaligned_be16(&scmd->cmnd[2]); first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) |
(scmd->cmnd[2] << 8) | scmd->cmnd[3]);
block_cnt = (u32)scmd->cmnd[4]; block_cnt = (u32)scmd->cmnd[4];
if (block_cnt == 0) if (block_cnt == 0)
block_cnt = 256; block_cnt = 256;