Re: [PATCH v3 1/2] PCI: dwc: ep: Fix MSI-X configuration to write to correct physical function

[Manivannan Sadhasivam]

On Fri, Mar 06, 2026 at 12:45:19PM -0600, Bjorn Helgaas wrote:
> On Tue, Feb 24, 2026 at 02:08:16PM +0530, Aksh Garg wrote:
> > The MSI-X configuration code reads from the correct physical function's
> > register space using dw_pcie_ep_readw_dbi(), but writes back only to
> > PF0 using the old dw_pcie_writew_dbi() helper. This causes incorrect
> > MSI-X configuration for other PFs.
> > 
> > Fix this by using dw_pcie_ep_writew_dbi() to write to the correct PF's
> > register space, matching the read operation.
> 
> Is this another case of using "PF" in a non-SR-IOV context, as I asked
> about here?
> 
>   https://lore.kernel.org/all/20260223185558.GA3701139@bhelgaas
> 
> I do not want to use "PF" unless we're talking about a device with an
> SR-IOV Capability and we're doing something specific to SR-IOV.
> 

Fixed the subject and commit log:
https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git/commit/?h=controller/dwc&id=271d0b1f058ae9815e75233d04b23e3558c3e4f4

- Mani

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