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vp_vdpa: Fix return value check for vdpa_alloc_device()

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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: 64b9f64f80 ("vdpa: introduce virtio pci driver")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Link: https://lore.kernel.org/r/20210715080026.242-2-xieyongji@bytedance.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
This commit is contained in:
Xie Yongji 2021-07-15 16:00:24 +08:00 committed by Michael S. Tsirkin
parent 2b847f2114
commit 9632e78e82
1 changed files with 2 additions and 2 deletions
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4
drivers/vdpa/virtio_pci/vp_vdpa.c
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@ -436,9 +436,9 @@ static int vp_vdpa_probe(struct pci_dev *pdev, const struct pci_device_id *id)
vp_vdpa = vdpa_alloc_device(struct vp_vdpa, vdpa,
dev, &vp_vdpa_ops, NULL);
if (vp_vdpa == NULL) {
if (IS_ERR(vp_vdpa)) {
dev_err(dev, "vp_vdpa: Failed to allocate vDPA structure\n");
return -ENOMEM;
return PTR_ERR(vp_vdpa);
}
mdev = &vp_vdpa->mdev;