Patch "nvme: fix the definition of the doorbell buffer config support bit" has been added to the 4.12-stable tree

Patch "nvme: fix the definition of the doorbell buffer config support bit" has been added to the 4.12-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

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

to the 4.12-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     nvme-fix-the-definition-of-the-doorbell-buffer-config-support-bit.patch
and it can be found in the queue-4.12 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 223694b9ae8bfba99f3528d49d07a740af6ff95a Mon Sep 17 00:00:00 2001
From: Changpeng Liu <changpeng.liu@intel.com>
Date: Thu, 31 Aug 2017 11:22:49 +0800
Subject: nvme: fix the definition of the doorbell buffer config support bit

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 {


Patches currently in stable-queue which might be from changpeng.liu@intel.com are

queue-4.12/nvme-fix-the-definition-of-the-doorbell-buffer-config-support-bit.patch