[PATCH 4.12 25/27] nvme: fix the definition of the doorbell buffer config support bit

Greg Kroah-Hartman
2017-09-05T07:16:08Z

From: Changpeng Liu <changpeng.liu@intel.com>

commit 223694b9ae8bfba99f3528d49d07a740af6ff95a upstream.

NVMe 1.3 specification defines the Optional Admin Command Support feature
flags, bit 8 set to '1' then the controller supports the Doorbell Buffer
Config command. Bit 7 is used for Virtualization Mangement command.

Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Fixes: f9f38e33 ("nvme: improve performance for virtual NVMe devices")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
include/linux/nvme.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -245,7 +245,7 @@ enum {
NVME_CTRL_ONCS_WRITE_ZEROES = 1 << 3,
NVME_CTRL_VWC_PRESENT = 1 << 0,
NVME_CTRL_OACS_SEC_SUPP = 1 << 0,
- NVME_CTRL_OACS_DBBUF_SUPP = 1 << 7,
+ NVME_CTRL_OACS_DBBUF_SUPP = 1 << 8,
};

struct nvme_lbaf {