netdev - Re: [PATCH 1/6] bus: Add shared MDIO bus framework

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20160426182335.GE30107@lunn.ch>
Date:	Tue, 26 Apr 2016 20:23:35 +0200
From:	Andrew Lunn <andrew@...n.ch>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Florian Fainelli <f.fainelli@...il.com>,
	Pramod Kumar <pramod.kumar@...adcom.com>,
	Rob Herring <robh+dt@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Masahiro Yamada <yamada.masahiro@...ionext.com>,
	Chen-Yu Tsai <wens@...e.org>,
	Mark Rutland <mark.rutland@....com>,
	devicetree@...r.kernel.org, Pawel Moll <pawel.moll@....com>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	netdev@...r.kernel.org, Punit Agrawal <punit.agrawal@....com>,
	linux-kernel@...r.kernel.org,
	BCM Kernel Feedback <bcm-kernel-feedback-list@...adcom.com>,
	linux-arm-kernel@...ts.infradead.org,
	Anup Patel <anup.patel@...adcom.com>,
	Kishon Vijay Abraham I <kishon@...com>
Subject: Re: [PATCH 1/6] bus: Add shared MDIO bus framework

> A more complex problem would be having a PHY driver for a device
> that can be either an ethernet phy or some other phy.

I doubt that ever happens. You can have up to 32 different devices on
an MDIO bus. Since an Ethernet PHY and a "some other sort of PHY" are
completely different things, why would a hardware engineer place them
on the same address? It is like saying your ATA controller and VGA
controller share the same slot on the PCI bus...

   Andrew