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[2620:137:e000::1:20]) by mx.google.com with ESMTP id cq22-20020a056402221600b0046ada798c66si5498832edb.333.2022.11.28.04.43.01; Mon, 28 Nov 2022 04:43:21 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=rM3lwLht; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230041AbiK1MUg (ORCPT + 84 others); Mon, 28 Nov 2022 07:20:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59406 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231166AbiK1MUM (ORCPT ); Mon, 28 Nov 2022 07:20:12 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7BE312774; Mon, 28 Nov 2022 04:13:10 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 0D9E4B80ABE; Mon, 28 Nov 2022 12:13:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1B4D0C433C1; Mon, 28 Nov 2022 12:13:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1669637587; bh=M4dM+HhK2pKx09FXlcWB2yVvlNalhN5jRoOLB8cHF5A=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=rM3lwLhtw7SgapRd3xWjSx1gqcDJ3GfeBfVL2T30VI/Kkkm+dPrleyxwUVv2tjW8T rcLuHIGTl1kE8CbvNf5nFB+pR0cAgUB9ffxUuecjy3cebv2mQP7Z1vBny4hqvYBLy1 E8ZwG+F/skkz5WZBy8Ba7xiwDjq0VQ1kVogsq4C9gtl/Usp76zh3TmgSJiUomkiQlX /7/h60JhrUPTIA8yTE7lMInuLJucNVQ5i4J7vG4kb7iz/XZpf6dmifQrHi5qdYykap cII4pN2PsJrRriJxb1w8qihvB5H2B0RmF6aev2jWxO1XjipaFUxFOmt31Swy0BSEsi U0PCAr/uJdd4w== Date: Mon, 28 Nov 2022 14:13:03 +0200 From: Leon Romanovsky To: zhang.songyi@zte.com.cn Cc: yishaih@nvidia.com, jgg@ziepe.ca, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH linux-next] RDMA/mlx4: remove NULL check before dev_{put, hold} Message-ID: References: <202211282000293202417@zte.com.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202211282000293202417@zte.com.cn> X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 28, 2022 at 08:00:29PM +0800, zhang.songyi@zte.com.cn wrote: > From: zhang songyi > > The call netdev_{put, hold} of dev_{put, hold} will check NULL, > so there is no need to check before using dev_{put, hold}. > > Fix the following coccicheck warnings: > /drivers/infiniband/hw/mlx4/main.c:1311:2-10: WARNING: > WARNING NULL check before dev_{put, hold} functions is not needed. > > /drivers/infiniband/hw/mlx4/main.c:148:2-10: WARNING: > WARNING NULL check before dev_{put, hold} functions is not needed. > > /drivers/infiniband/hw/mlx4/main.c:1959:3-11: WARNING: > WARNING NULL check before dev_{put, hold} functions is not needed. > > /drivers/infiniband/hw/mlx4/main.c:1962:3-10: WARNING: > WARNING NULL check before dev_{put, hold} functions is not needed. > > Signed-off-by: zhang songyi > --- > drivers/infiniband/hw/mlx4/main.c | 12 ++++-------- > 1 file changed, 4 insertions(+), 8 deletions(-) > The patch needs to be based on this repository: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/ branch: for-next Thanks