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| author | Christoph Hellwig | 2018-11-20 16:57:54 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2018-12-17 09:24:40 +0100 |
| commit | 1bda8b7996656c85005db7ac2a86b797c7f6cd1d (patch) | |
| tree | bad41cd490517463700c6047135780186f254a2c /drivers/nvme/host/nvme.h | |
| parent | fscache, cachefiles: remove redundant variable 'cache' (diff) | |
| download | kernel-qcow2-linux-1bda8b7996656c85005db7ac2a86b797c7f6cd1d.tar.gz kernel-qcow2-linux-1bda8b7996656c85005db7ac2a86b797c7f6cd1d.tar.xz kernel-qcow2-linux-1bda8b7996656c85005db7ac2a86b797c7f6cd1d.zip | |
nvme: warn when finding multi-port subsystems without multipathing enabled
[ Upstream commit 14a1336e6fff47dd1028b484d6c802105c58e2ee ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/nvme/host/nvme.h')
| -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 bb4a2003c097..60220de2db52 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -537,6 +537,9 @@ 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) |