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authorJames Bottomley <JBottomley@Parallels.com>2013-07-24 12:43:18 -0700
committerJames Bottomley <JBottomley@Parallels.com>2013-07-24 14:18:12 -0700
commite1be09808e030d57bb743618eb41e2bc31dd464c (patch)
treed17034c79f22fbd304ab95146e8f9de22ad30f96 /drivers/scsi/isci
parent53a983c4f8b4246f5ff00567411be55967b0350a (diff)
downloadlinux-e1be09808e030d57bb743618eb41e2bc31dd464c.tar.bz2
[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 e73823f7a2c921dcf068d34ea03bd682498d9e42 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>
Diffstat (limited to 'drivers/scsi/isci')
-rw-r--r--drivers/scsi/isci/request.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c
index 7b082157eb79..99d2930b18c8 100644
--- a/drivers/scsi/isci/request.c
+++ b/drivers/scsi/isci/request.c
@@ -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)