linux-kernel - Re: PCIe Hotplug: NFG unless I boot with card already inserted.

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Message-ID: <471509FE.7080505@rtr.ca>
Date:	Tue, 16 Oct 2007 14:59:10 -0400
From:	Mark Lord <lkml@....ca>
To:	Kristen Carlson Accardi <kristen.c.accardi@...el.com>
Cc:	pcihpd-discuss@...ts.sourceforge.net,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: PCIe Hotplug:  NFG unless I boot with card already inserted.

Mark Lord wrote:
> Kristen Carlson Accardi wrote:
>> On Tue, 16 Oct 2007 14:39:33 -0400
>> Mark Lord <lkml@....ca> wrote:
>>
>>> I also checked my modprobe.d/ options, and I am using pciehp_force=1.
>>> Without that flag, none of this ever works.
>>
>> OK - I suspected something like this.  Most Dell computers don't support
>> ExpressCard hotplug using Native PCIe -- in fact, I've not seen a single
>> one, they explicitly disable it because they have not validated it or
>> they have and something didn't work right.  I'll take a look at what 
>> you've
>> got, but be aware that you are forcing pciehp to load and operate on a 
>> system
>> where they've certainly either not tested it, or tested it and something
>> bad happened.
> 
> Perhaps.  But this one works perfectly, except for two driver bugs:
> 
> 1. Driver does not notice already-inserted cards after modprobe.
> 2. Driver fails to function after suspend/resume until reloaded.
> 
> Both of those are fixable in the kernel.

Ahh.. point 2 in particular suffers from "suspend/resume" not implemented.
Or rather, implemented as a pair of "do nothing" functions.

Cheers
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