From e1be09808e030d57bb743618eb41e2bc31dd464c Mon Sep 17 00:00:00 2001
From: James Bottomley <JBottomley@Parallels.com>
Date: Wed, 24 Jul 2013 12:43:18 -0700
Subject: [PATCH] [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>
---
drivers/scsi/isci/request.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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)
--
GitLab