[PATCH AUTOSEL for 4.9 43/54] nvmet: cancel fatal error and flush async work before free controller

[alexander . levin]

From: Sagi Grimberg <s...@grimberg.me>

[ Upstream commit 06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5 ]

Make sure they are not running and we can free the controller
safely.

Signed-off-by: Roy Shterman <r...@lightbitslabs.com>
Signed-off-by: Sagi Grimberg <s...@grimberg.me>
Reviewed-by: Christoph Hellwig <h...@lst.de>
Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
---
 drivers/nvme/target/core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 55ce769cecee..fbd6d487103f 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -816,6 +816,9 @@ static void nvmet_ctrl_free(struct kref *ref)
        list_del(&ctrl->subsys_entry);
        mutex_unlock(&subsys->lock);
 
+       flush_work(&ctrl->async_event_work);
+       cancel_work_sync(&ctrl->fatal_err_work);
+
        ida_simple_remove(&subsys->cntlid_ida, ctrl->cntlid);
        nvmet_subsys_put(subsys);
 
-- 
2.11.0