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=-9.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH,URIBL_BLOCKED,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 36A87C072B1 for ; Thu, 30 May 2019 04:26:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 100FC254AD for ; Thu, 30 May 2019 04:26:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559190406; bh=LTGs/ZQ0ZWor2mCV+mT5jRrLzyYC3NSzLDS7oOfHpEM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ac7pXUzvWsVU70KvxXYq0033krMT9G+Y5pPDdKN7rAmXnc+BONxv58RCPH9sfHqrE h6EePWHkhEOxGeaghddxoQcQF678LQ8Wk2jRLjL30E8YgnZC2O0XWaBB6FTk4//HgY OhUKy48gD4iIYCi2CADpi0/An6nWt5855G08LR4A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729877AbfE3DO3 (ORCPT ); Wed, 29 May 2019 23:14:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:34576 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729868AbfE3DO2 (ORCPT ); Wed, 29 May 2019 23:14:28 -0400 Received: from localhost (ip67-88-213-2.z213-88-67.customer.algx.net [67.88.213.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E4BA524565; Thu, 30 May 2019 03:14:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559186068; bh=LTGs/ZQ0ZWor2mCV+mT5jRrLzyYC3NSzLDS7oOfHpEM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=phxZyWK43yI5GQzrpxdTmILn2X//6GkoCYbQtf8m94Yaz7uhIPHmzhRDZH0foHSFF Bhw3I+vuMi5TORiLLZeZ2pPWbOAxRelAF9nA3/EW9WscimFB/78NeECPxP/wrL8DXq WNmDEPCJEsHaKBn4jO7N6PeCU3HqyZNrP4o7Am/I= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , Enric Balletbo i Serra , Chanwoo Choi , MyungJoo Ham , Sasha Levin Subject: [PATCH 5.0 179/346] PM / devfreq: Fix static checker warning in try_then_request_governor Date: Wed, 29 May 2019 20:04:12 -0700 Message-Id: <20190530030550.194295001@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190530030540.363386121@linuxfoundation.org> References: <20190530030540.363386121@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit b53b0128052ffd687797d5f4deeb76327e7b5711 ] The patch 23c7b54ca1cd: "PM / devfreq: Fix devfreq_add_device() when drivers are built as modules." leads to the following static checker warning: drivers/devfreq/devfreq.c:1043 governor_store() warn: 'governor' can also be NULL The reason is that the try_then_request_governor() function returns both error pointers and NULL. It should just return error pointers, so fix this by returning a ERR_PTR to the error intead of returning NULL. Fixes: 23c7b54ca1cd ("PM / devfreq: Fix devfreq_add_device() when drivers are built as modules.") Reported-by: Dan Carpenter Signed-off-by: Enric Balletbo i Serra Reviewed-by: Chanwoo Choi Signed-off-by: MyungJoo Ham Signed-off-by: Sasha Levin --- drivers/devfreq/devfreq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 0ae3de76833b7..839621b044f49 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -228,7 +228,7 @@ static struct devfreq_governor *find_devfreq_governor(const char *name) * if is not found. This can happen when both drivers (the governor driver * and the driver that call devfreq_add_device) are built as modules. * devfreq_list_lock should be held by the caller. Returns the matched - * governor's pointer. + * governor's pointer or an error pointer. */ static struct devfreq_governor *try_then_request_governor(const char *name) { @@ -254,7 +254,7 @@ static struct devfreq_governor *try_then_request_governor(const char *name) /* Restore previous state before return */ mutex_lock(&devfreq_list_lock); if (err) - return NULL; + return ERR_PTR(err); governor = find_devfreq_governor(name); } -- 2.20.1