From 986994a27587efd8ce4c595cab89b570f7475359 Mon Sep 17 00:00:00 2001
From: Parav Pandit <parav@mellanox.com>
Date: Thu, 26 Jan 2017 17:17:28 +0200
Subject: nvme: Use CNS as 8-bit field and avoid endianness conversion

This patch defines CNS field as 8-bit field and avoids cpu_to/from_le
conversions.
Also initialize nvme_command cns value explicitly to NVME_ID_CNS_NS
for readability (don't rely on the fact that NVME_ID_CNS_NS = 0).

Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
---
 include/linux/nvme.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'include/linux')

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 0b676a02cf3e..5b32521456d6 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -644,7 +644,9 @@ struct nvme_identify {
 	__le32			nsid;
 	__u64			rsvd2[2];
 	union nvme_data_ptr	dptr;
-	__le32			cns;
+	__u8			cns;
+	__u8			rsvd3;
+	__le16			ctrlid;
 	__u32			rsvd11[5];
 };
 
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