From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bastien Nocera Subject: Re: RFC: Wacom Bluetooth HID driver, first pass Date: Mon, 16 Mar 2009 23:58:54 +0000 Message-ID: <1237247934.32264.10670.camel@cookie.hadess.net> References: <1236988799.32264.6310.camel@cookie.hadess.net> <1237200912.32264.9867.camel@cookie.hadess.net> <93531296-64B0-4D4B-A4A9-26F3D67DF579@holtmann.org> <1237213799.32264.10090.camel@cookie.hadess.net> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.redhat.com ([66.187.233.31]:34336 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754451AbZCQASg (ORCPT ); Mon, 16 Mar 2009 20:18:36 -0400 In-Reply-To: <1237213799.32264.10090.camel@cookie.hadess.net> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Marcel Holtmann Cc: linux-input , BlueZ development , mjg , Peter Hutterer , zap@homelink.ru On Mon, 2009-03-16 at 14:29 +0000, Bastien Nocera wrote: > On Mon, 2009-03-16 at 15:00 +0100, Marcel Holtmann wrote: > > > A couple of notes: > > > - the wheel action is reversed, it's a simple fix, done locally > > > - hidp and the Bluetooth sub-system says it can't probe the device > > > with > > > error "-14" when hid-wacom.ko isn't already loaded Bluetooth: HIDP (Human Interface Emulation) ver 1.2 wacom 0005:056A:0081.0001: parse failed wacom: probe of 0005:056A:0081.0001 failed with error -14 wacom driver registered > > what was the reason for not forcing HID to load the generic driver? > > What generic driver? If you're talking about the default Wacom driver, > it isn't an HID driver, and requires a USB device. > > > I > > lost track on how HID is suppose to handle these. You could also > > introduce a phony export like we do with L2CAP to ensure it is loaded > > even if userspace isn't ready to handle this dependency. > > Well, the problem is that the driver _does_ load, but I'm not certain > about the sequence of events between the Bluetooth sub-system, the > user-space enabling (see the linked patch to bluetoothd), and the HID > sub-system. Turning the device off and on again works though. No idea what's happening. > > > - I'm getting oopses in hci_conn_del() when the device goes away > > > (eg. I > > > turn it off). > > > > Try to run a net-next-2.6 or bluetooth-next-2.6 kernel. Kyle should > > have merged these patches into the latest rawhide kernel. > > I was hoping this would be fixed in the latest linus-2.6 tree, guess > not. No more crashes. Great stuff. I sent a fixed up patch to the list earlier. Cheers