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Commit 1bda8b79 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Greg Kroah-Hartman
Browse files

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: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarSagi Grimberg <sagi@grimberg.me>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 1f925643

drivers/nvme/host/nvme.h

+3 −0
Original line number Diff line number Diff line
@@ -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)