linux-kernel - Re: [PATCH net-next v4 1/3] net: stmmac: Add generic suspend/resume helper for PCI-based controllers

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Message-ID: <aRSkoTJjVlUC6ZLQ@shell.armlinux.org.uk>
Date: Wed, 12 Nov 2025 15:15:45 +0000
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Jakub Kicinski <kuba@...nel.org>
Cc: Yao Zi <ziyao@...root.org>, Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>,
	Yanteng Si <si.yanteng@...ux.dev>,
	Huacai Chen <chenhuacai@...nel.org>,
	Philipp Stanner <phasta@...nel.org>,
	Tiezhu Yang <yangtiezhu@...ngson.cn>,
	Qunqin Zhao <zhaoqunqin@...ngson.cn>,
	Vladimir Oltean <vladimir.oltean@....com>,
	Furong Xu <0x1207@...il.com>,
	Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
	Jacob Keller <jacob.e.keller@...el.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v4 1/3] net: stmmac: Add generic suspend/resume
 helper for PCI-based controllers

On Wed, Nov 12, 2025 at 06:57:20AM -0800, Jakub Kicinski wrote:
> On Tue, 11 Nov 2025 10:07:26 +0000 Yao Zi wrote:
> > +config STMMAC_LIBPCI
> > +	tristate "STMMAC PCI helper library"
> > +	depends on PCI
> > +	default y
> > +	help
> > +	  This selects the PCI bus helpers for the stmmac driver. If you
> > +	  have a controller with PCI interface, say Y or M here.
> 
> I didn't pay enough attention to the discussion on v2, sorry.
> I understand that there's precedent for a library symbol hiding
> real symbols in this driver but it really makes for a poor user
> experience.
> 
> The symbol should be hidden, and select'ed by what needs it.
> With the PCI dependency on the real symbol, not here.
> 
> The "default y" may draw the attention of the Superior Penguin.
> He may have quite a lot to criticize in this area, so let's
> not risk it..

Okay, should we also convert STMMAC_PLATFORM to behave the same way,
because it's odd to have one bus type acting one way and the other
differently.

-- 
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