On Wed, 2025-10-08 at 10:15 +0000, Duan, Zhenzhong wrote: > > > > > -----Original Message----- > > From: Cédric Le Goater <[[email protected]](mailto:[email protected])> > > Subject: Re: [PATCH v2 3/3] pci: Fix wrong parameter passing to > > pci_device_get_iommu_bus_devfn() > > > > On 9/29/25 05:42, Zhenzhong Duan wrote: > > > > > The 2nd parameter of pci_device_get_iommu_bus_devfn() about root > > > > PCIBus > > > > > backed by an IOMMU for the PCI device, the 3rd is about aliased PCIBus > > > of the PCI device. > > > > > > Meanwhile the 3rd and 4th parameters are optional, pass NULL if they > > > are not needed. > > > > > > Signed-off-by: Zhenzhong Duan > > > <[[email protected]](mailto:[email protected])> > > > > > > The commit log should mention potential consequences of this change. > > > Without fix, the callback function may not be called as iommu_ops is set > for iommu_bus rather than bus. Luckily, there is no user of those > functions yet, so no real issue currently. > > > > > Will this fix need to be backported ? up to ~9.1 > > > I think no need, Clement could correct me if above explanation is wrong.
That's correct, thanks Zhenzhong > > Thanks > Zhenzhong >
