diff options
| author | Benjamin Berg | 2023-02-09 10:00:05 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-03-11 13:55:23 +0100 |
| commit | a02a91057652d98a1445808070ae5e968417741b (patch) | |
| tree | c9f81dfb51253ef7f9de78a6c17844e7e4c51d6f | |
| parent | e38d2adf110c5ea079b41ced00984425757a8b80 (diff) | |
um: virt-pci: properly remove PCI device from bus
[ Upstream commit 339b84dcd7113dd076419ea2a47128cc53450305 ]
Triggering a bus rescan will not cause the PCI device to be removed. It
is required to explicitly stop and remove the device from the bus.
Fixes: 68f5d3f3b654 ("um: add PCI over virtio emulation driver")
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/um/drivers/virt-pci.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/arch/um/drivers/virt-pci.c b/arch/um/drivers/virt-pci.c index 3b637ad75ec8..5472b1a0a039 100644 --- a/arch/um/drivers/virt-pci.c +++ b/arch/um/drivers/virt-pci.c @@ -626,22 +626,33 @@ static void um_pci_virtio_remove(struct virtio_device *vdev) struct um_pci_device *dev = vdev->priv; int i; - /* Stop all virtqueues */ - virtio_reset_device(vdev); - vdev->config->del_vqs(vdev); - device_set_wakeup_enable(&vdev->dev, false); mutex_lock(&um_pci_mtx); for (i = 0; i < MAX_DEVICES; i++) { if (um_pci_devices[i].dev != dev) continue; + um_pci_devices[i].dev = NULL; irq_free_desc(dev->irq); + + break; } mutex_unlock(&um_pci_mtx); - um_pci_rescan(); + if (i < MAX_DEVICES) { + struct pci_dev *pci_dev; + + pci_dev = pci_get_slot(bridge->bus, i); + if (pci_dev) + pci_stop_and_remove_bus_device_locked(pci_dev); + } + + /* Stop all virtqueues */ + virtio_reset_device(vdev); + dev->cmd_vq = NULL; + dev->irq_vq = NULL; + vdev->config->del_vqs(vdev); kfree(dev); } |