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authorChristoph Hellwig2020-09-16 18:11:01 -0700
committerChristoph Hellwig2020-09-17 10:36:25 +0200
commit3a6b076168e20a50289d71f601f1dd02be0f8e88 (patch)
treea2f312634f5c551b47b71bd28d103cf96ccbe827 /drivers/nvme
parent52a3974feb1a3eec25d8836d37a508b67b0a9cd0 (diff)
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: c1fef73f793b ("nvmet: add passthru code to process commands") Reported-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/target/passthru.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/nvme/target/passthru.c b/drivers/nvme/target/passthru.c
index 8bd7f656e240..dacfa7435d0b 100644
--- a/drivers/nvme/target/passthru.c
+++ b/drivers/nvme/target/passthru.c
@@ -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;