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[SCSI] isci: fix breakage caused by >16byte CDB patch 

Oops, apparently no-one I cc'd at intel actually bothered to check this
patch for the isci driver:

commit e73823f7a2
Author: James Bottomley <JBottomley@Parallels.com>
Date:   Tue May 7 15:38:18 2013 -0700

    [SCSI] libsas: implement > 16 byte CDB support

sci_swab32_cpy needs multiples of four, so for commands that aren't that, it's
rounding the wrong way.  fix by doing (len+3)/4 instead of len/4.

Reported-by: Tony Luck <tony.luck@intel.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Bottomley 2013-07-24 12:43:18 -07:00
parent 53a983c4f8
commit e1be09808e
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/isci/request.c
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@ -185,7 +185,7 @@ static void sci_io_request_build_ssp_command_iu(struct isci_request *ireq)
cmd_iu->_r_c = 0;
sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cmd->cmnd,
task->ssp_task.cmd->cmd_len / sizeof(u32));
(task->ssp_task.cmd->cmd_len+3) / sizeof(u32));
}
static void sci_task_request_build_ssp_task_iu(struct isci_request *ireq)