From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754909AbdJINTU (ORCPT ); Mon, 9 Oct 2017 09:19:20 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:43462 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754892AbdJINTQ (ORCPT ); Mon, 9 Oct 2017 09:19:16 -0400 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Mauro Carvalho Chehab" , "Steven Toth" , "Dan Carpenter" Date: Mon, 09 Oct 2017 13:30:34 +0100 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.2 57/74] [media] saa7164: fix endian conversion in saa7164_bus_set() In-Reply-To: X-SA-Exim-Connect-IP: 2a02:8011:400e:2:6f00:88c8:c921:d332 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.2.94-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Dan Carpenter commit 773ddbd228dc16a4829836e1dc16383e44c8575e upstream. The msg->command field is 32 bits, and we should fill it with a call to cpu_to_le32(). The current code is broke on big endian systems. On little endian systems it truncates the 32 bit value to 16 bits which probably still works fine. Signed-off-by: Dan Carpenter Cc: Steven Toth Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Ben Hutchings --- drivers/media/video/saa7164/saa7164-bus.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/media/video/saa7164/saa7164-bus.c +++ b/drivers/media/video/saa7164/saa7164-bus.c @@ -149,7 +149,7 @@ int saa7164_bus_set(struct saa7164_dev * saa7164_bus_verify(dev); msg->size = cpu_to_le16(msg->size); - msg->command = cpu_to_le16(msg->command); + msg->command = cpu_to_le32(msg->command); msg->controlselector = cpu_to_le16(msg->controlselector); if (msg->size > dev->bus.m_wMaxReqSize) { @@ -464,7 +464,7 @@ int saa7164_bus_get(struct saa7164_dev * peekout: msg->size = le16_to_cpu(msg->size); - msg->command = le16_to_cpu(msg->command); + msg->command = le32_to_cpu(msg->command); msg->controlselector = le16_to_cpu(msg->controlselector); ret = SAA_OK; out: