[dpdk-dev] [PATCH v2] bus/pci: fix wrong intr_handle.type with uio_pci_generic

[Yang, Zhiyong]

> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas at monjalon.net]
> Sent: Friday, December 29, 2017 7:07 PM
> To: Yang, Zhiyong <zhiyong.yang at intel.com>
> Cc: dev at dpdk.org; Yigit, Ferruh <ferruh.yigit at intel.com>; stable at dpdk.org
> Subject: Re: [PATCH v2] bus/pci: fix wrong intr_handle.type with uio_pci_generic
> 
> 29/12/2017 08:55, Zhiyong Yang:
> > For virtio legacy device, testpmd startup fails when using
> > uio_pci_generic. The issue is caused by invoking the function
> > pci_ioport_map. The right intr_handle.type is already set before
> > calling it, we should avoid overwriting the default value "RTE_
> > INTR_HANDLE_UNKNOWN" in it. Besides, the removal has no harm to other
> > cases since it already is set to this value (0) at init.
> 
> To be more precise, it is set to 0 by a memset on the whole struct during
> allocation in the scan function (pci_scan_one).

Ok

> 
> > --- a/drivers/bus/pci/linux/pci.c
> > +++ b/drivers/bus/pci/linux/pci.c
> > @@ -723,7 +723,6 @@ pci_ioport_map(struct rte_pci_device *dev, int bar
> __rte_unused,
> >  	if (!found)
> >  		return -1;
> >
> > -	dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
> 
> There is the same assignment in pci_vfio_map_resource_primary(),
> pci_vfio_map_resource_secondary() and pci_uio_map_resource().
> 
> Please could you check why there is such assignments?

Well, Let me check them later.

Thanks
Zhiyong