From patchwork Mon Jan 25 08:13:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tian Tao X-Patchwork-Id: 12048155 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 5779BC433E6 for ; Tue, 26 Jan 2021 19:54:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1F94A23110 for ; Tue, 26 Jan 2021 19:54:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728690AbhAZFbj (ORCPT ); Tue, 26 Jan 2021 00:31:39 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:11148 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726867AbhAYJuD (ORCPT ); Mon, 25 Jan 2021 04:50:03 -0500 Received: from DGGEMS403-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4DPMzJ2z2Lz15yXX; Mon, 25 Jan 2021 16:12:12 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by DGGEMS403-HUB.china.huawei.com (10.3.19.203) with Microsoft SMTP Server id 14.3.498.0; Mon, 25 Jan 2021 16:13:19 +0800 From: Tian Tao To: , , , CC: Subject: [PATCH] zram: fix NULL check before some freeing functions is not needed Date: Mon, 25 Jan 2021 16:13:01 +0800 Message-ID: <1611562381-14985-1-git-send-email-tiantao6@hisilicon.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.69.192.56] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org fixed the below warning: /drivers/block/zram/zram_drv.c:534:2-8: WARNING: NULL check before some freeing functions is not needed. Signed-off-by: Tian Tao --- drivers/block/zram/zram_drv.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index e2933cb..92739b9 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -530,8 +530,7 @@ static ssize_t backing_dev_store(struct device *dev, return len; out: - if (bitmap) - kvfree(bitmap); + kvfree(bitmap); if (bdev) blkdev_put(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);