[PATCH RFC] net: stmmac: Make DWMAC_ROCKCHIP and DWMAC_STM32 depend on PM_SLEEP

[Paul E. McKenney]

On Mon, Aug 18, 2025 at 08:26:05PM +0100, Russell King (Oracle) wrote:
> On Mon, Aug 18, 2025 at 12:11:09PM -0700, Paul E. McKenney wrote:
> > Hello!
> > 
> > This might be more of a bug report than a patch, but here goes...
> > 
> > Running rcuscale or refscale performance tests on datacenter ARM systems
> > gives the following build errors with CONFIG_HIBERNATION=n:
> > 
> > ERROR: modpost: "stmmac_simple_pm_ops" [drivers/net/ethernet/stmicro/stmmac/dwmac-rk.ko] undefined!
> > ERROR: modpost: "stmmac_simple_pm_ops" [drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.ko] undefined!
> 
> The kernel build bot caught this, and I asked questions of Rafael last
> week and have been waiting for a response that still hasn't come.
> 
> However, there was some discussion over the weekend (argh) on IRC from
> rdd and arnd, but I didn't have time over a weekend (shocking, I know,
> we're supposed to work 24x7 on the kernel, rather than preparing to
> travel to a different location for medical stuff) to really participate
> in that discussion.
> 
> Nevertheless, I do have a patch with my preferred solution - but whether
> that solution is what other people prefer seems to be a subject of
> disagreement according to that which happened on IRC. This affects every
> driver that I converted to use stmmac_simple_pm_ops, which is more than
> you're patching.
> 
> I've been missing around with medical stuff today, which means I also
> haven't had time today to do anything further.
> 
> It's a known problem, but (1) there's been no participation from the
> kernel community to help address it and (2) over the last few days I've
> been busy myself doing stuff related to medical stuff.
> 
> Yea, it's shocking, but it's also real life outside of the realms of
> kernel hacking.

;-) ;-) ;-)

I am happy with whatever solves the problem.  In the meantime, I will
be using my patch in testing to get this failure out of the way of
other bugs.

							Thanx, Paul