diff options
| author |   Guilherme G. Piccoli <gpiccoli@canonical.com> | 2019-08-14 11:26:10 -0300 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2019-08-20 11:02:10 -0600 |
| commit | a89fcca8185633993018dc081d6b021d005e6d0b (patch) | |
| tree | 613431c0907a7577475ebf919459a86a115b9285 /drivers/nvme/host/core.c | |
| parent | nvme-multipath: fix possible I/O hang when paths are updated (diff) | |
| download | linux-dev-a89fcca8185633993018dc081d6b021d005e6d0b.tar.xz linux-dev-a89fcca8185633993018dc081d6b021d005e6d0b.zip | |
nvme: Fix cntlid validation when not using NVMEoF
Commit 1b1031ca63b2 ("nvme: validate cntlid during controller initialisation")
introduced a validation for controllers with duplicate cntlid that runs
on nvme_init_subsystem(). The problem is that the validation relies on
ctrl->cntlid, and this value is assigned (from id_ctrl value) after the
call for nvme_init_subsystem() in nvme_init_identify() for non-fabrics
scenario. That leads to ctrl->cntlid always being 0 in case we have a
physical set of controllers in the same subsystem.
This patch fixes that by loading the discovered cntlid id_ctrl value into
ctrl->cntlid before the subsystem initialization, only for the non-fabrics
case. The patch was tested with emulated nvme devices (qemu) having two
controllers in a single subsystem. Without the patch, we couldn't make
it work failing in the duplicate check; when running with the patch, we
could see the subsystem holding both controllers.
For the fabrics case we see ctrl->cntlid has a more intricate relation
with the admin connect, so we didn't change that.
Fixes: 1b1031ca63b2 ("nvme: validate cntlid during controller initialisation")
Signed-off-by: Guilherme G. Piccoli <gpiccoli@canonical.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to '')
| -rw-r--r-- | drivers/nvme/host/core.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index c258a1ce4b28..fea83fd95252 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -2597,6 +2597,9 @@ int nvme_init_identify(struct nvme_ctrl *ctrl) goto out_free; } + if (!(ctrl->ops->flags & NVME_F_FABRICS)) + ctrl->cntlid = le16_to_cpu(id->cntlid); + if (!ctrl->identified) { int i; @@ -2697,7 +2700,6 @@ int nvme_init_identify(struct nvme_ctrl *ctrl) goto out_free; } } else { - ctrl->cntlid = le16_to_cpu(id->cntlid); ctrl->hmpre = le32_to_cpu(id->hmpre); ctrl->hmmin = le32_to_cpu(id->hmmin); ctrl->hmminds = le32_to_cpu(id->hmminds); |