Commit 3a6b0761 authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

nvmet: get transport reference for passthru ctrl 



Grab a reference to the transport driver to ensure it can't be unloaded
while a passthrough controller is active.

Fixes: c1fef73f ("nvmet: add passthru code to process commands")
Reported-by: default avatarChaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarLogan Gunthorpe <logang@deltatee.com>
parent 52a3974f

drivers/nvme/target/passthru.c

+2 −0
Original line number Diff line number Diff line
@@ -517,6 +517,7 @@ int nvmet_passthru_ctrl_enable(struct nvmet_subsys *subsys) 
		subsys->ver = NVME_VS(1, 2, 1);

	}



	__module_get(subsys->passthru_ctrl->ops->module);

	mutex_unlock(&subsys->lock);

	return 0;
@@ -531,6 +532,7 @@ static void __nvmet_passthru_ctrl_disable(struct nvmet_subsys *subsys) 
{

	if (subsys->passthru_ctrl) {

		xa_erase(&passthru_subsystems, subsys->passthru_ctrl->cntlid);

		module_put(subsys->passthru_ctrl->ops->module);

		nvme_put_ctrl(subsys->passthru_ctrl);

	}

	subsys->passthru_ctrl = NULL;

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