From patchwork Mon Apr 26 09:35:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yang Li X-Patchwork-Id: 12224043 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,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=unavailable 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 CBB71C43460 for ; Mon, 26 Apr 2021 09:35:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9240D611F0 for ; Mon, 26 Apr 2021 09:35:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232626AbhDZJgM (ORCPT ); Mon, 26 Apr 2021 05:36:12 -0400 Received: from out30-133.freemail.mail.aliyun.com ([115.124.30.133]:51732 "EHLO out30-133.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232078AbhDZJgL (ORCPT ); Mon, 26 Apr 2021 05:36:11 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R121e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e01424;MF=yang.lee@linux.alibaba.com;NM=1;PH=DS;RN=6;SR=0;TI=SMTPD_---0UWpMk66_1619429727; Received: from j63c13417.sqa.eu95.tbsite.net(mailfrom:yang.lee@linux.alibaba.com fp:SMTPD_---0UWpMk66_1619429727) by smtp.aliyun-inc.com(127.0.0.1); Mon, 26 Apr 2021 17:35:28 +0800 From: Yang Li To: jikos@kernel.org Cc: benjamin.tissoires@redhat.com, linux-usb@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Yang Li Subject: [PATCH] HID: hiddev: return -ENOMEM when kmalloc failed Date: Mon, 26 Apr 2021 17:35:26 +0800 Message-Id: <1619429726-54768-1-git-send-email-yang.lee@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The driver is using -1 instead of the -ENOMEM defined macro to specify that a buffer allocation failed. Using the correct error code is more intuitive. Smatch tool warning: drivers/hid/usbhid/hiddev.c:894 hiddev_connect() warn: returning -1 instead of -ENOMEM is sloppy No functional change, just more standardized. Reported-by: Abaci Robot Signed-off-by: Yang Li --- drivers/hid/usbhid/hiddev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c index 45e0b1c..88020f3 100644 --- a/drivers/hid/usbhid/hiddev.c +++ b/drivers/hid/usbhid/hiddev.c @@ -891,7 +891,7 @@ int hiddev_connect(struct hid_device *hid, unsigned int force) } if (!(hiddev = kzalloc(sizeof(struct hiddev), GFP_KERNEL))) - return -1; + return -ENOMEM; init_waitqueue_head(&hiddev->wait); INIT_LIST_HEAD(&hiddev->list);