Re: [PATCH] vp_vdpa: correct the return value when fail to map notification

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On Thu, Jun 24, 2021 at 11:59:39AM +0800, Jason Wang wrote:
We forget to assign a error value when we fail to map the notification
during prove. This patch fixes it.

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Fixes: 11d8ffed00b23 ("vp_vdpa: switch to use vp_modern_map_vq_notify()")
Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
---
drivers/vdpa/virtio_pci/vp_vdpa.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/vdpa/virtio_pci/vp_vdpa.c b/drivers/vdpa/virtio_pci/vp_vdpa.c
index c76ebb531212..9145e0624565 100644
--- a/drivers/vdpa/virtio_pci/vp_vdpa.c
+++ b/drivers/vdpa/virtio_pci/vp_vdpa.c
@@ -442,6 +442,7 @@ static int vp_vdpa_probe(struct pci_dev *pdev, const struct pci_device_id *id)
			vp_modern_map_vq_notify(mdev, i,
						&vp_vdpa->vring[i].notify_pa);
		if (!vp_vdpa->vring[i].notify) {
+			ret = -EINVAL;
			dev_warn(&pdev->dev, "Fail to map vq notify %d\n", i);
			goto err;
		}
--
2.25.1

Reviewed-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>

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