Hi Greg,

please consider backporting

a5a441ae283d ("ice/ptp: fix crosstimestamp reporting")

into linux-6.12.y

It fixes a regression from the series around d4bea547ebb57 ("ice/ptp: Remove convert_art_to_tsc()") which affected multiple drivers and occasionally caused phc2sys to fail on ioctl(fd, PTP_SYS_OFFSET_PRECISE, ...).

This was the initial fix for ice but apparently tagging it for stable was forgotten during submission.

A similar fix for e1000e can be found here:

Link: https://lore.kernel.org/lkml/20250709-e1000e_crossts-v2-1-2aae94384c59@bloch...

The hunk was moved around slightly in the upstream commit 92456e795ac6 ("ice: Add unified ice_capture_crosststamp"). Let me know if you therefore want a separate patch, I just didn't want to to steal the credits here.

Thanks a lot!

Markus