RE: [PATCH net-next v2] net: fec: Propagate PTP initialization errors

[Wei Fang]

> > Is this a real bug that bothers people? or just an improvement?
> > For real bug, I think the patch should target to net tree.
> >
> 
> I consider this a real bug rather than just an improvement, for two reasons.
> 
> First, commit b86bcb299092 was a bug fix and was also backported to stable.
> This patch fixes the error handling in that change, which incorrectly
> treats errors
> other than -ENXIO as an absent optional IRQ. Therefore, I believe this
> fix is also
> relevant to stable kernels.
> 
> Second, the current implementation can silently ignore -EPROBE_DEFER and
> continue probing instead of deferring. On an affected platform, this
> can result in
> the PPS IRQ not being set up, causing the corresponding PPS functionality to be
> unavailable to the user.
> 
> I don't have hardware to reproduce this specific case, so the issue
> was found by
> code inspection rather than a user report.
> If you think this fix is appropriate for the net tree, I'm happy to
> retarget and resend it there.
> 

It is a potential issue, so the target tree should be net.