From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.136]:42250 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752413AbcDNCbH (ORCPT ); Wed, 13 Apr 2016 22:31:07 -0400 Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DF43820274 for ; Thu, 14 Apr 2016 02:31:00 +0000 (UTC) Received: from x250 (unknown [49.64.218.63]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CACF12017E for ; Thu, 14 Apr 2016 02:30:59 +0000 (UTC) Date: Thu, 14 Apr 2016 10:30:48 +0800 From: Shawn Guo To: stable@vger.kernel.org Subject: Please add patch "staging: android: ion: Set the length of the DMA sg entries in buffer" to 4.1 and 4.4 stable kernel Message-ID: <20160414023048.GA6949@x250> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: stable-owner@vger.kernel.org List-ID: Hi stable team, This is the first time I request to add a patch that is already on upstream to stable kernel. I'm not sure if this is the correct procedure, but I'm following option 2 in stable_kernel_rules.txt to request add the following patch to 4.1 and 4.4 stable kernel. commit 70bc916b2c80913753fb188d4daee50a64d21ba0 upstream. We are seeing a problem on an ARM64 platform running Android 4.4 + Linux 4.1. A sanity check in GPU driver detects that the scatterlist created by ION driver does not have a valid dma_length, and hence refuses to work. And the requested patch fixes our problem. Thanks, Shawn