NVMe: Fix endian-related problems in user I/O submission path

When constructing the command, dsmgmt needs to be treated as a 32-bit
value, not a 16-bit value.  reftag, apptag and appmask all need to be
converted from native-endian to little-endian.  Again, sparse's bitwise
warnings caught this problem.  Thanks to Keith for pointing out the
correct way to fix the reftag.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Acked-by: Keith Busch <keith.busch@intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 09f419d4da4e..7ae7ecfc0947 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -207,11 +207,11 @@ struct nvme_common_command {
         __u8                    flags;
         __u16                   command_id;
         __le32                  nsid;
-        __u32                   cdw2[2];
+        __le32                  cdw2[2];
         __le64                  metadata;
         __le64                  prp1;
         __le64                  prp2;
-        __u32                   cdw10[6];
+        __le32                  cdw10[6];
 };
 
 struct nvme_rw_command {