From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f51.google.com ([74.125.82.51]:36348 "EHLO mail-wm0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758356AbcFAPgA (ORCPT ); Wed, 1 Jun 2016 11:36:00 -0400 Subject: Re: [PATCH] IB/core: Fix different types mix in ib_device_cap_flags structure values To: Max Gurtovoy , Jason Gunthorpe , Leon Romanovsky References: <1464602994-21226-1-git-send-email-maxg@mellanox.com> <08df9022-e575-da0d-c76d-a28185c9db2d@sandisk.com> <20160531171306.GA6618@obsidianresearch.com> <20160531173033.GC7477@leon.nu> <13f16fdf-e1d2-0baa-abe1-6423d2196b72@sandisk.com> <20160531181223.GE7477@leon.nu> <20160531182100.GC21834@obsidianresearch.com> <20160531185432.GF7477@leon.nu> <20160531193956.GD21834@obsidianresearch.com> <574ECF44.3070003@mellanox.com> Cc: Bart Van Assche , matanb@mellanox.com, linux-rdma@vger.kernel.org, stable@vger.kernel.org From: Sagi Grimberg Message-ID: <574F00DC.5000002@grimberg.me> Date: Wed, 1 Jun 2016 18:35:56 +0300 MIME-Version: 1.0 In-Reply-To: <574ECF44.3070003@mellanox.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: stable-owner@vger.kernel.org List-ID: >> Which is clearly wrong. This is because signed int becomes sign >> extended when converted to uint64_t, corrupting the upper bits. >> >> Since adding the ULL's doesn't make the enum constants have uniform >> type I would not bother with the churn. > > tested this with single casting to IB_DEVICE_ON_DEMAND_PAGING (1 << 31) > to (1ULL << 31). works fine. > I'll send another patch today. Good to know, thanks Max.