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

[Andrew Lunn <andrew@lunn.ch>]

On Thu, Sep 03, 2026 at 09:29:11AM +0000, Wei Fang wrote:
> > Change fec_ptp_init() to return an error code instead of silently
> > ignoring failures during PTP initialization.
> > 
> > The PPS IRQ is not required for the FEC/PTP functionality, so its
> > absence should not make the probe fail. However, an unavailable
> > optional IRQ should be distinguished from an actual error returned
> > during the IRQ lookup.
> > 
> > If a platform does not support the PPS IRQ, it can omit the IRQ from
> > its device tree and the optional lookup will return -ENXIO. Propagate
> > other errors from the IRQ lookup instead of silently ignoring them.
> > 
> > Also propagate failures from devm_request_irq() and ptp_clock_register().
> > 
> > Update the function declaration in fec.h accordingly.
> > 
> > Found by manual code inspection.
> > 
> > Fixes: b86bcb299092 ("net: fec_ptp: Use platform_get_irq_xxx_optional() to
> > avoid error message")
> 
> If this is a bug fix, it should target to net tree rather than net-next.

https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html

Stable rules say it must be a bug that bothers people. Does this
bother you?

       Andrew