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SubjectRe: [PATCH 3/4] vDPA/ifcvf: Fix return value check for vdpa_alloc_device()
On Thu, Jul 15, 2021 at 04:00:25PM +0800, Xie Yongji wrote:
>The vdpa_alloc_device() returns an error pointer upon
>failure, not NULL. To handle the failure correctly, this
>replaces NULL check with IS_ERR() check and propagate the
>error upwards.
>
>Fixes: 5a2414bc454e ("virtio: Intel IFC VF driver for VDPA")
>Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
>Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
>---
> drivers/vdpa/ifcvf/ifcvf_main.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c
>index 21b78f1cd521..351c6cfb24c3 100644
>--- a/drivers/vdpa/ifcvf/ifcvf_main.c
>+++ b/drivers/vdpa/ifcvf/ifcvf_main.c
>@@ -493,9 +493,9 @@ static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
>
> adapter = vdpa_alloc_device(struct ifcvf_adapter, vdpa,
> dev, &ifc_vdpa_ops, NULL);
>- if (adapter == NULL) {
>+ if (IS_ERR(adapter)) {
> IFCVF_ERR(pdev, "Failed to allocate vDPA structure");
>- return -ENOMEM;
>+ return PTR_ERR(adapter);
> }
>
> pci_set_master(pdev);
>--
>2.11.0
>

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

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