From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Achatz Subject: [PATCH 2/3] HID: roccat: declaring meaning of pack pragma usage in koneplus driver Date: Sat, 06 Nov 2010 19:52:46 +0100 Message-ID: <1289069566.5166.3.camel@neuromancer> References: <1287943025.2623.16.camel@neuromancer> <1288978962.2585.15.camel@neuromancer> Reply-To: erazor_de@users.sourceforge.net Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-in-01.arcor-online.net ([151.189.21.41]:51785 "EHLO mail-in-01.arcor-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751659Ab0KFSws (ORCPT ); Sat, 6 Nov 2010 14:52:48 -0400 In-Reply-To: Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Jiri Kosina Cc: Randy Dunlap , Bruno =?ISO-8859-1?Q?Pr=E9mont?= , Stephane Chatty , Don Prince , Dmitry Torokhov , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org Using pack pragma to prevent padding bytes in binary data structures used for hardware communication. Explanation of these pragmas was requested. Signed-off-by: Stefan Achatz --- drivers/hid/hid-roccat-koneplus.h | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/hid/hid-roccat-koneplus.h b/drivers/hid/hid-roccat-koneplus.h index bf750fa..c25a799 100644 --- a/drivers/hid/hid-roccat-koneplus.h +++ b/drivers/hid/hid-roccat-koneplus.h @@ -14,6 +14,9 @@ #include +/* + * Binary data structures for communication with hardware must have no padding. + */ #pragma pack(push) #pragma pack(1) -- 1.7.2.3