Merge tag 'char-misc-4.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...

[karo-tx-linux.git] / drivers / vfio / pci / vfio_pci.c

diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 063c1ce6fa422e24d1bceb0ef10aeeccce864b96..f041b1a6cf665e6410917d3608de5fe0ac557476 100644 (file)
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -226,7 +226,14 @@ static int vfio_pci_enable(struct vfio_pci_device *vdev)
        if (ret)
                return ret;
 
-       vdev->reset_works = (pci_reset_function(pdev) == 0);
+       /* If reset fails because of the device lock, fail this path entirely */
+       ret = pci_try_reset_function(pdev);
+       if (ret == -EAGAIN) {
+               pci_disable_device(pdev);
+               return ret;
+       }
+
+       vdev->reset_works = !ret;
        pci_save_state(pdev);
        vdev->pci_saved_state = pci_store_saved_state(pdev);
        if (!vdev->pci_saved_state)