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nvme-pci: detach dma-bufs only on removal

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Detaching the dma-bufs on every shutdown permanently prevents dma-buf
I/O after resuming from a suspend. The mappings remain valid across
suspend, so detach these only when the device is being removed.

Fixes: ce5e386c11 ("nvme-pci: implement dma-buf backed requests")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Link: https://patch.msgid.link/20261021184658.644645-3-kbusch@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Keith Busch 2026-10-21 11:46:58 -07:00 committed by Jens Axboe
parent bcbd808652
commit fd13f31ac6
1 changed files with 1 additions and 3 deletions
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4
drivers/nvme/host/pci.c
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@ -3578,9 +3578,6 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown)
nvme_unquiesce_admin_queue(&dev->ctrl);
}
mutex_unlock(&dev->shutdown_lock);
if (shutdown)
nvme_pci_remove_dmabuf(&dev->dmabufs);
}
static int nvme_disable_prepare_reset(struct nvme_dev *dev, bool shutdown)
@ -4150,6 +4147,7 @@ static void nvme_remove(struct pci_dev *pdev)
nvme_stop_ctrl(&dev->ctrl);
nvme_remove_namespaces(&dev->ctrl);
nvme_dev_disable(dev, true);
nvme_pci_remove_dmabuf(&dev->dmabufs);
nvme_free_host_mem(dev);
nvme_dev_remove_admin(dev);
nvme_dbbuf_dma_free(dev);