From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933479AbcI3Rkv (ORCPT ); Fri, 30 Sep 2016 13:40:51 -0400 Received: from mga14.intel.com ([192.55.52.115]:43580 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932430AbcI3Rkg (ORCPT ); Fri, 30 Sep 2016 13:40:36 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,273,1473145200"; d="scan'208";a="15071375" Date: Fri, 30 Sep 2016 23:19:11 +0530 From: Vinod Koul To: Colin King Cc: Linus Walleij , Dan Williams , linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH][V2] dmaengine: coh901318: fix integer overflow when shifting more than 32 places Message-ID: <20160930174911.GW2467@localhost> References: <20160929181438.14374-1-colin.king@canonical.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160929181438.14374-1-colin.king@canonical.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Sep 29, 2016 at 07:14:38PM +0100, Colin King wrote: > From: Colin Ian King > > Currently U300_DMA_CHANNELS is set to 40, meaning that the shift of 1 can > be more than 32 places, which leads to a 32 bit integer overflow. Fix this > by using 1ULL instead of 1 before shifting it. Also add braces on the > for-loop to keep with coding style conventions. Applied, thanks -- ~Vinod