Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760302Ab2EKOc0 (ORCPT ); Fri, 11 May 2012 10:32:26 -0400 Received: from cantor2.suse.de ([195.135.220.15]:41104 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751976Ab2EKOcV (ORCPT ); Fri, 11 May 2012 10:32:21 -0400 Date: Fri, 11 May 2012 16:32:13 +0200 (CEST) From: Jiri Kosina To: Nestor Lopez Casado Cc: jrnieder@gmail.com, Benjamin Tissoires , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, hugo@osvaldobarrera.com.ar, 671292@bugs.debian.org, stable@vger.kernel.org Subject: Re: [PATCH v2 1/1] HID: logitech: read all 32 bits of report type bitfield In-Reply-To: <1336745836-17385-1-git-send-email-nlopezcasad@logitech.com> Message-ID: References: <1336745836-17385-1-git-send-email-nlopezcasad@logitech.com> User-Agent: Alpine 2.00 (LNX 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1261 Lines: 33 On Fri, 11 May 2012, Nestor Lopez Casado wrote: > From: Jonathan Nieder > > On big-endian systems (e.g., Apple PowerBook), trying to use a > logitech wireless mouse with the Logitech Unifying Receiver does not > work with v3.2 and later kernels. The device doesn't show up in > /dev/input. Older kernels work fine. > > That is because the new hid-logitech-dj driver claims the device. The > device arrival notification appears: > > 20 00 41 02 00 00 00 00 00 00 00 00 00 00 00 > > and we read the report_types bitfield (02 00 00 00) to find out what > kind of device it is. Unfortunately the driver only reads the first 8 > bits and treats that value as a 32-bit little-endian number, so on a > powerpc the report type seems to be 0x02000000 and is not recognized. > > Even on little-endian machines, connecting a media center remote > control (report type 00 01 00 00) with this driver loaded would > presumably fail for the same reason. Applied, thanks. -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/