Bjorn Helgaas [off-list ref] writes:

On Mon, Mar 22, 2021 at 09:18:21AM -0700, Vinicius Costa Gomes wrote:

quoted

In practice, enabling PTM also sets the enabled_ptm flag in the PCI
device, the flag will be used for detecting if PTM is enabled before
adding support for the SYSOFFSET_PRECISE ioctl() (which is added by
implementing the getcrosststamp() PTP function).

I think you're referring to the "pci_dev.ptm_enabled" flag.  I'm not
sure what the connection to this patch is.  The SYSOFFSET_PRECISE
stuff also seems to belong with some other patch.

Yeah, I will improve the commit message to make it clear that this patch
is a preparation patch for the one that will add support for
PTP_SYS_OFFSET_PRECISE/getcrosststamp() and what's the relation with
PCIe PTM.

This patch merely enables PTM if it's supported (might be worth
expanding Precision Time Measurement for context).

Yes. Will expand the definition in the commit message.


Cheers,
-- 
Vinicius