From: Casey Chen cachen@purestorage.com
[ Upstream commit 251ef6f71be2adfd09546a26643426fe62585173 ]
nvme_dev_remove_admin could free dev->admin_q and the admin_tagset while they are being accessed by nvme_dev_disable(), which can be called by nvme_reset_work via nvme_remove_dead_ctrl.
Commit cb4bfda62afa ("nvme-pci: fix hot removal during error handling") intended to avoid requests being stuck on a removed controller by killing the admin queue. But the later fix c8e9e9b7646e ("nvme-pci: unquiesce admin queue on shutdown"), together with nvme_dev_disable(dev, true) right before nvme_dev_remove_admin() could help dispatch requests and fail them early, so we don't need nvme_dev_remove_admin() any more.
Fixes: cb4bfda62afa ("nvme-pci: fix hot removal during error handling") Signed-off-by: Casey Chen cachen@purestorage.com Reviewed-by: Keith Busch kbusch@kernel.org Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/host/pci.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 82d87d2e280c..8f1f10fa0dd6 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2605,7 +2605,6 @@ static void nvme_remove(struct pci_dev *pdev) if (!pci_device_is_present(pdev)) { nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_DEAD); nvme_dev_disable(dev, true); - nvme_dev_remove_admin(dev); }
flush_work(&dev->ctrl.reset_work);