Re: [PATCH net] bnxt_en: enable PTM function

On Fri, Aug 7, 2026 at 2:16 AM Vadim Fedorenko
<[email protected]> wrote:
>
> On 06.08.2026 21:35, Michael Chan wrote:
> > On Thu, Aug 6, 2026 at 1:22 PM Vadim Fedorenko
> > <[email protected]> wrote:
> >>
> >> The patch mentioned in Fixes missed one main point of implementing
> >> proper PTM support. To make it fully operational it has to be explicitly
> >> enabled. Add missing call in probe callback and disable it in teardown
> >> callback.
> >
> > We were actually discussing this internally just a few weeks ago.  I
> > think the FW always enables it and that's why pci_enable_ptm() is not
> > strictly required.  I'll let Pavan comment on this further.  Thanks.
>
> In my test even though firmware was acting as requestor, pcie_ptm_enabled()
> returns false and disables setup of getcrosststamp callback. This happens
> because kernel doesn't know that PTM is enabled.

I think the right thing to do would be to first check the capability
from FW (which actually decides whether we can support PTM on the
installed RC/platform) and then enable it in the kernel.
This is what we internally decided to do. Can you wait for us to
complete that work and send the patch?