From: Keith Busch <keith.busch@intel.com> mainline inclusion from mainline-5.2-rc2 commit e43269e6e5c49d7fec599e6bba71963935b0e4ba category: bugfix bugzilla: 167363 CVE: NA --------------------------- If a controller disabling didn't start a freeze, don't wait for the operation to complete. Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Reviewed-by: Hou Tao <houtao1@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/nvme/host/pci.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index d295594da64d7..78ce02e476aad 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2185,7 +2185,7 @@ static void nvme_pci_disable(struct nvme_dev *dev) static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown) { - bool dead = true; + bool dead = true, freeze = false; struct pci_dev *pdev = to_pci_dev(dev->dev); mutex_lock(&dev->shutdown_lock); @@ -2193,8 +2193,10 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown) u32 csts = readl(dev->bar + NVME_REG_CSTS); if (dev->ctrl.state == NVME_CTRL_LIVE || - dev->ctrl.state == NVME_CTRL_RESETTING) + dev->ctrl.state == NVME_CTRL_RESETTING) { + freeze = true; nvme_start_freeze(&dev->ctrl); + } dead = !!((csts & NVME_CSTS_CFS) || !(csts & NVME_CSTS_RDY) || pdev->error_state != pci_channel_io_normal); } @@ -2203,10 +2205,8 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown) * Give the controller a chance to complete all entered requests if * doing a safe shutdown. */ - if (!dead) { - if (shutdown) - nvme_wait_freeze_timeout(&dev->ctrl, NVME_IO_TIMEOUT); - } + if (!dead && shutdown && freeze) + nvme_wait_freeze_timeout(&dev->ctrl, NVME_IO_TIMEOUT); nvme_stop_queues(&dev->ctrl); -- 2.25.1