nvme: fix the definition of the doorbell buffer config support bit

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")
Cc: stable@vger.kernel.org

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 25d8225dbd046d4dcac62e8261d1e49981b72df9..8efff888bd9bccdd4794bfaf4be66a3631e90cf1 100644 (file)
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -254,7 +254,7 @@ enum {
        NVME_CTRL_VWC_PRESENT                   = 1 << 0,
        NVME_CTRL_OACS_SEC_SUPP                 = 1 << 0,
        NVME_CTRL_OACS_DIRECTIVES               = 1 << 5,
-       NVME_CTRL_OACS_DBBUF_SUPP               = 1 << 7,
+       NVME_CTRL_OACS_DBBUF_SUPP               = 1 << 8,
 };
 
 struct nvme_lbaf {