linux-kernel - Re: [PATCH -next] vp_vdpa: fix error return code in vp_vdpa

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Date:   Thu, 20 May 2021 09:05:38 +0200
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     Wei Yongjun <weiyongjun1@...wei.com>
Cc:     "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>, Eli Cohen <elic@...dia.com>,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Hulk Robot <hulkci@...wei.com>
Subject: Re: [PATCH -next] vp_vdpa: fix error return code in vp_vdpa_probe()

On Wed, May 19, 2021 at 02:16:46PM +0000, Wei Yongjun wrote:
>Fix to return negative error code -ENOMEM from the error handling
>case instead of 0, as done elsewhere in this function.
>
>Fixes: 11d8ffed00b2 ("vp_vdpa: switch to use vp_modern_map_vq_notify()")
>Reported-by: Hulk Robot <hulkci@...wei.com>
>Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
>---
> 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..e5d92db728d3 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 = -ENOMEM;
> 			dev_warn(&pdev->dev, "Fail to map vq notify %d\n", i);
> 			goto err;
> 		}
>

Reviewed-by: Stefano Garzarella <sgarzare@...hat.com>