This is a note to let you know that I've just added the patch titled
nvme-core: check ctrl css before setting up zns
to the 5.11-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-core-check-ctrl-css-before-setting-up-zns.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 27617fcbda6da43932092727740f6e3a99c77eab
Author: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>
Date: Mon Mar 8 20:58:21 2021 -0800
nvme-core: check ctrl css before setting up zns
[ Upstream commit 0ec84df4953bd42c6583a555773f1d4996a061eb ]
Ensure multiple Command Sets are supported before starting to setup a
ZNS namespace.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>
[hch: move the check around a bit]
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 206bf0a50487..c611a17e83f0 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -4069,6 +4069,12 @@ static void nvme_validate_or_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
nsid);
break;
}
+ if (!nvme_multi_css(ctrl)) {
+ dev_warn(ctrl->device,
+ "command set not reported for nsid: %d\n",
+ ns->head->ns_id);
+ break;
+ }
nvme_alloc_ns(ctrl, nsid, &ids);
break;
default:
