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Date: Thu, 11 Mar 2021 11:23:00 +0800 From: Jason Wang <jasowang@...hat.com> To: Zhu Lingshan <lingshan.zhu@...el.com>, mst@...hat.com, lulu@...hat.com, leonro@...dia.com Cc: virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH V3 1/6] vDPA/ifcvf: get_vendor_id returns a device specific vendor id On 2021/3/10 5:00 下午, Zhu Lingshan wrote: > In this commit, ifcvf_get_vendor_id() will return > a device specific vendor id of the probed pci device > than a hard code. > > Signed-off-by: Zhu Lingshan <lingshan.zhu@...el.com> > --- > drivers/vdpa/ifcvf/ifcvf_main.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c > index fa1af301cf55..e501ee07de17 100644 > --- a/drivers/vdpa/ifcvf/ifcvf_main.c > +++ b/drivers/vdpa/ifcvf/ifcvf_main.c > @@ -324,7 +324,10 @@ static u32 ifcvf_vdpa_get_device_id(struct vdpa_device *vdpa_dev) > > static u32 ifcvf_vdpa_get_vendor_id(struct vdpa_device *vdpa_dev) > { > - return IFCVF_SUBSYS_VENDOR_ID; > + struct ifcvf_adapter *adapter = vdpa_to_adapter(vdpa_dev); > + struct pci_dev *pdev = adapter->pdev; > + > + return pdev->subsystem_vendor; > } While at this, I wonder if we can do something similar in get_device_id() if it could be simple deduced from some simple math from the pci device id? Thanks > > static u32 ifcvf_vdpa_get_vq_align(struct vdpa_device *vdpa_dev)
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