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nvme: fix memory leak for power latency tolerance

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[ Upstream commit 510a405d94 ]

Unconditionally hide device pm latency tolerance when uninitializing
the controller to ensure all qos resources are released so that we're
not leaking this memory. This is safe to call if none were allocated in
the first place, or were previously freed.

Fixes: c5552fde102fc("nvme: Enable autonomous power state transitions")
Suggested-by: Keith Busch <keith.busch@intel.com>
Tested-by: David Milburn <dmilburn@redhat.com>
Signed-off-by: Yufen Yu <yuyufen@huawei.com>
[changelog]
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yufen Yu 2019-05-16 19:30:07 -07:00 • committed by Greg Kroah-Hartman
commit c0d3e166e1
1 changed files with 1 additions and 0 deletions
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1
drivers/nvme/host/core.c
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@ -3525,6 +3525,7 @@ EXPORT_SYMBOL_GPL(nvme_start_ctrl);
void nvme_uninit_ctrl(struct nvme_ctrl *ctrl)
{
dev_pm_qos_hide_latency_tolerance(ctrl->device);
cdev_device_del(&ctrl->cdev, ctrl->device);
}
EXPORT_SYMBOL_GPL(nvme_uninit_ctrl);