From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 27BDFC742A2 for ; Thu, 11 Jul 2019 18:46:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EDCA621019 for ; Thu, 11 Jul 2019 18:46:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731022AbfGKSqN (ORCPT ); Thu, 11 Jul 2019 14:46:13 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38816 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731006AbfGKSqM (ORCPT ); Thu, 11 Jul 2019 14:46:12 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 63C2130832E9; Thu, 11 Jul 2019 18:46:12 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4E05A5D720; Thu, 11 Jul 2019 18:46:12 +0000 (UTC) Received: from zmail21.collab.prod.int.phx2.redhat.com (zmail21.collab.prod.int.phx2.redhat.com [10.5.83.24]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 3C4B51818485; Thu, 11 Jul 2019 18:46:12 +0000 (UTC) Date: Thu, 11 Jul 2019 14:46:11 -0400 (EDT) From: Pankaj Gupta To: "Michael S. Tsirkin" Cc: virtualization@lists.linux-foundation.org, dan j williams , yuval shaia , linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org, cohuck@redhat.com, lcapitulino@redhat.com Message-ID: <1464566100.41069898.1562870771867.JavaMail.zimbra@redhat.com> In-Reply-To: <20190711134648-mutt-send-email-mst@kernel.org> References: <20190710175832.17252-1-pagupta@redhat.com> <20190711134648-mutt-send-email-mst@kernel.org> Subject: Re: [PATCH v2] virtio_pmem: fix sparse warning MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [10.67.116.73, 10.4.195.27] Thread-Topic: virtio_pmem: fix sparse warning Thread-Index: VglBfntAUfpmr8NxVnObWKSCyUc5eA== X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.44]); Thu, 11 Jul 2019 18:46:12 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > > On Wed, Jul 10, 2019 at 11:28:32PM +0530, Pankaj Gupta wrote: > > This patch fixes below sparse warning related to __virtio > > type in virtio pmem driver. This is reported by Intel test > > bot on linux-next tree. > > > > nd_virtio.c:56:28: warning: incorrect type in assignment > > (different base types) > > nd_virtio.c:56:28: expected unsigned int [unsigned] [usertype] type > > nd_virtio.c:56:28: got restricted __virtio32 > > nd_virtio.c:93:59: warning: incorrect type in argument 2 > > (different base types) > > nd_virtio.c:93:59: expected restricted __virtio32 [usertype] val > > nd_virtio.c:93:59: got unsigned int [unsigned] [usertype] ret > > > > Reported-by: kbuild test robot > > Signed-off-by: Pankaj Gupta > > --- > > > > This fixes a warning, so submitting it as a separate > > patch on top of virtio pmem series. > > > > include/uapi/linux/virtio_pmem.h | 6 +++--- > > 1 file changed, 3 insertions(+), 3 deletions(-) > > > > diff --git a/include/uapi/linux/virtio_pmem.h > > b/include/uapi/linux/virtio_pmem.h > > index efcd72f2d20d..7a7435281362 100644 > > --- a/include/uapi/linux/virtio_pmem.h > > +++ b/include/uapi/linux/virtio_pmem.h > > @@ -10,7 +10,7 @@ > > #ifndef _UAPI_LINUX_VIRTIO_PMEM_H > > #define _UAPI_LINUX_VIRTIO_PMEM_H > > > > -#include > > +#include > > #include > > #include > > > > @@ -23,12 +23,12 @@ struct virtio_pmem_config { > > > > struct virtio_pmem_resp { > > /* Host return status corresponding to flush request */ > > - __u32 ret; > > + __virtio32 ret; > > }; > > > > struct virtio_pmem_req { > > /* command type */ > > - __u32 type; > > + __virtio32 type; > > }; > > > > #endif > > Same comment as previously: pls use __le and fix accessors. Now, I think I got it. __virtio is for legacy devices to solve the endianess. By default virtio 1.0 and later are little endian. Will send updated patch soon. Thank you, Pankaj > > > -- > > 2.20.1 >