linux-kernel - [PATCH] virtio_vdpa: Support surprise removal of virtio vdpa device

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Date:   Tue, 11 Jan 2022 12:08:31 +0800
From:   dongsheng li <lidongsheng@...udpu.com>
To:     mst@...hat.com, jasowang@...hat.com
Cc:     virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org,
        dongsheng li <lidongsheng@...udpu.com>
Subject: [PATCH] virtio_vdpa: Support surprise removal of virtio vdpa device

When virtio vdpa device removed, the abnormal damage of the device cannot be
perceived normally, which will cause problems similar to:

Commit 43bb40c5b926 ("virtio_pci: Support surprise removal of
virtio pci device")

Hence, add the ability to abort the command on surprise removal

Signed-off-by: dongsheng li <lidongsheng@...udpu.com>
---
 drivers/virtio/virtio_vdpa.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
index 4a9ddb44b2a7..fd930409d190 100644
--- a/drivers/virtio/virtio_vdpa.c
+++ b/drivers/virtio/virtio_vdpa.c
@@ -374,6 +374,7 @@ static void virtio_vdpa_remove(struct vdpa_device *vdpa)
 {
 	struct virtio_vdpa_device *vd_dev = vdpa_get_drvdata(vdpa);
 
+	virtio_break_device(vd_dev->vdev);
 	unregister_virtio_device(&vd_dev->vdev);
 }
 
-- 
2.17.1