linux-kernel - Re: usb touchscreen breakage in 2.6.21-rc5-mm4 ?

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Message-Id: <200704062237.13118.dtor@insightbb.com>
Date:	Fri, 6 Apr 2007 22:37:12 -0400
From:	Dmitry Torokhov <dtor@...ightbb.com>
To:	Helge Hafting <helgehaf@...el.hist.no>
Cc:	linux-kernel@...r.kernel.org, linux-usb-devel@...ts.sourceforge.net
Subject: Re: usb touchscreen breakage in 2.6.21-rc5-mm4 ?

On Friday 06 April 2007 20:54, Helge Hafting wrote:
> I have an usb  touchscreen (egalax variety) that works with
> the 2.6.18 kernel supplied by debian.
> 
> It fails when I compile 2.6.21-rc5-mm4, tuned to the machine
> in question.  Unlike the debian kernel, this kernel don't use
> modules in order to save boot time.
> 
> The strange thing is, 2.6.21-rc5-mm4 recognizes the device.
> dmesg says things like 
> usb 3-2: Manufacturer: eGalac Inc.
> usb 3-2: Product: USB TouchController
> 
> and a lot more. Unlike 2.6.18, it never gets around to say
> "usbcore: registered new driver usbtouchscreen"
> which seems to indicate a problem.
> usbcore registers several other drivers, such as usbserial and pl2303
> that makes the gps work. It also registers other drivers like
> usb-storage,usbfs,hub,libusual,hiddev,usbhid.  But not usbtouchscreen.
> I believe I have turned on every config option for usb touchscreen,
> this should not be missing.
> 
> Is there something wrong, or could there be a seemingly unrelated option
> that I need to turn on?

Please make sure that you have CONFIG_USB_TOUCHSCREEN turned on.

-- 
Dmitry
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