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| author |   Christoph Hellwig <hch@lst.de> | 2018-11-20 16:57:54 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-11-30 17:23:22 +0100 |
| commit | 14a1336e6fff47dd1028b484d6c802105c58e2ee (patch) | |
| tree | 75f6379c283a095ecc5ae4d0798df0694819986f /drivers/nvme/host/nvme.h | |
| parent | nvme-pci: fix surprise removal (diff) | |
| download | linux-dev-14a1336e6fff47dd1028b484d6c802105c58e2ee.tar.xz linux-dev-14a1336e6fff47dd1028b484d6c802105c58e2ee.zip | |
nvme: warn when finding multi-port subsystems without multipathing enabled
Without CONFIG_NVME_MULTIPATH enabled a multi-port subsystem might
show up as invididual devices and cause problems, warn about it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Diffstat (limited to '')
| -rw-r--r-- | drivers/nvme/host/nvme.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index cee79cb388af..081cbdcce880 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -531,6 +531,9 @@ static inline void nvme_mpath_check_last_path(struct nvme_ns *ns) static inline int nvme_mpath_init(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id) { + if (ctrl->subsys->cmic & (1 << 3)) + dev_warn(ctrl->device, +"Please enable CONFIG_NVME_MULTIPATH for full support of multi-port devices.\n"); return 0; } static inline void nvme_mpath_uninit(struct nvme_ctrl *ctrl) |