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

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Message-ID: <20070409223643.GB2198@aitel.hist.no>
Date:	Tue, 10 Apr 2007 00:36:43 +0200
From:	Helge Hafting <helgehaf@...el.hist.no>
To:	Dmitry Torokhov <dtor@...ightbb.com>
Cc:	linux-kernel@...r.kernel.org, linux-usb-devel@...ts.sourceforge.net
Subject: Re: usb touchscreen breakage in 2.6.21-rc5-mm4 ?

On Fri, Apr 06, 2007 at 10:37:12PM -0400, Dmitry Torokhov wrote:
> 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.
> 
Unfortunately, I have:
CONFIG_USB_TOUCHSCREEN=y
CONFIG_USB_TOUCHSCREEN_EGALAX=y

Anything else I may have missed?

Helge Hafting
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