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>

parent 751a0cc0

drivers/nvme/host/nvme.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -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)