Date: Fri, 4 May 2007 20:52:47 -0500
From: Chris Adams <cmadams@hiwaay.net>
To: Daniel J Blueman <daniel.blueman@gmail.com>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: ExpressCard hotswap support?
Message-ID: <20070505015246.GD1004160@hiwaay.net>
References: <6278d2220705040304n6bfe14e8h7d3a1302315f36a5@mail.gmail.com>
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Once upon a time, Daniel J Blueman <daniel.blueman@gmail.com> said:
> On 4 May, 01:20, Chris Adams <cmadams@hiwaay.net> wrote:
> >I've got a Thinkpad Z60m with an ExpressCard slot, and I got a Belkin
> >F5U250 GigE ExpressCard (Marvell 88E8053 chip using sky2 driver).  It
> >appears that Linux only recognizes it if I insert the card with the
> >system powered off.  If I hot-insert the card, nothing happens (no
> >messages logged, no PCI device shows up, nothing).
> 
> The BIOS initialises and powers up the downstream PCI express port
> when it detects a card is present.
> 
> When Linux boots, it enumerates the bus and sees it, but does not do
> prior configuration to enable, configure and cause link negotiation on
> all PCI express ports I believe; this requires chipset and (sometimes
> revision-) specific code, which wouldn't be so robust as the BIOS
> doing the footwork.

Actually, for me, loading pciehp with pciehp_force=1 set works.
-- 
Chris Adams <cmadams@hiwaay.net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.
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