linux-kernel - Re: 2.6.20-rc6 pb

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Message-Id: <1170066737.13904.12.camel@localhost>
Date:	Mon, 29 Jan 2007 11:32:17 +0100
From:	Soeren Sonnenburg <kernel@....de>
To:	Jiri Kosina <jikos@...os.cz>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-usb-devel <linux-usb-devel@...ts.sourceforge.net>
Subject: Re: 2.6.20-rc6 pb_fnmode regression

On Mon, 2007-01-29 at 10:55 +0100, Jiri Kosina wrote:
> On Sat, 27 Jan 2007, Soeren Sonnenburg wrote:
> 
> > I realized that any setting to /sys/module/usbhid/parameters/pb_fnmode 
> > is just ignored until the machine does a suspend-resume cycle.
[...]
> I would rather be inclined to just make the 
> /sys/module/usbhid/parameters/pb_fnmode read-only (which is what most of 
> the drivers do anyway), to avoid this kind of confusion.
> 
> Do you have really any strong use-case, when setting the parameter during 
> runtime would be much more useful than just do it during modprobe or 
> rmmod/modprobe cycle?

Well I need in-kernel usbhid and the way this was implemented in 2.6.19
(and before) one could change pb_fnmode on-the-fly. This is mentioned in
all the power/i/mac/book tutorials and everyone is used to switching
modes this way.

I can happily patch the kernel to use the pb_fnmode but nonetheless this
is a regression to pre 2.6.20* and will confuse others too...

Soeren
-- 
Sometimes, there's a moment as you're waking, when you become aware of
the real world around you, but you're still dreaming.
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