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nvme-pci: Fix controller freeze wait disabling 

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>
This commit is contained in:
Keith Busch 2019-05-14 14:07:38 -06:00
parent a6a4b66bd8
commit e43269e6e5
1 changed files with 6 additions and 6 deletions
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12
drivers/nvme/host/pci.c
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@ -2376,7 +2376,7 @@ 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);
@ -2384,8 +2384,10 @@ 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);
}
@ -2394,10 +2396,8 @@ 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);