linux-kernel - Re: expresscard hotplug not working

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Message-ID: <4A9BCC0B.1010107@rtr.ca>
Date:	Mon, 31 Aug 2009 09:11:39 -0400
From:	Mark Lord <lkml@....ca>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Mike Mohr <akihana@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: expresscard hotplug not working

Matthew Garrett wrote:
> On Mon, Aug 31, 2009 at 08:45:47AM -0400, Mark Lord wrote:
> 
>> With acpiphp loaded, hotplug works on the ExpressCard slot
>> of my Dell i9400 notebook.  Well, it *mostly* works.
> 
> Ok, that's good.
> 
>> The part that is still b0rked is that inserted cards get
>> "forgotten" about over suspend/resume (RAM) cycles.
> 
> I can entirely believe that that's broken. Thanks, I'll take a look at that.
..

Great!  Email me directly (or CC: me) if/when you'd like some more testing.

Another thing that could be a factor here, is that neither method
(acpiphp or pciehp) seems "automatic".  The user has to know to load
one or the other module, or at least manually add them to /etc/modules.

This could account for some reports of the mechanism failing.

Shouldn't one or the other module be loaded automatically somehow
when a system has hotpluggable slots?

Probably a chicken-and-egg issue, I suppose, or something for a distro to fuss over.

Cheers
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