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=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 3FD02C433DF for ; Thu, 30 Jul 2020 08:16:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 14CE52074B for ; Thu, 30 Jul 2020 08:16:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596096962; bh=EK7AU3umgWF+MjgNKJPzI26DlG5PNOhqnBDJBBvQw98=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Y5hZRmnH8RQ8wX/lR/o94JFEEcToa4mMonxfZpaqMHugOjTNenKJ5Kev+RPAxnyBh 67to24hgkTIkQz3iX095WWpW/LSEwfD7Z7x1qcJ4/2+5e2pjY7lUI9ccu/s1Zazxez V3DpZyBwkQ6Sx5Grlcqa3LRc8r06T3VCqIDzEduI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729161AbgG3IQB (ORCPT ); Thu, 30 Jul 2020 04:16:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:50772 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729331AbgG3ILa (ORCPT ); Thu, 30 Jul 2020 04:11:30 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 868B82075F; Thu, 30 Jul 2020 08:11:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596096690; bh=EK7AU3umgWF+MjgNKJPzI26DlG5PNOhqnBDJBBvQw98=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H48FNtuNkc9UOHQzMBa/5axTipm045YUl07naGt0k6FuYJfK5r5Mq2n8ZIWkmkMew kOdWGRFd/fBJ4ikTq4o4x/2XT/T32nuFJAjL2ulG9YVL3Hnuz/Jo9Ox9qHmTZbb5Zf p9mpVLN4IcXobJblPxbmTNAAKaWyrpNKNwAQfVoQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Marc Kleine-Budde , Mark Brown , Sasha Levin Subject: [PATCH 4.4 22/54] regmap: dev_get_regmap_match(): fix string comparison Date: Thu, 30 Jul 2020 10:05:01 +0200 Message-Id: <20200730074422.276619714@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200730074421.203879987@linuxfoundation.org> References: <20200730074421.203879987@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 From: Marc Kleine-Budde [ Upstream commit e84861fec32dee8a2e62bbaa52cded6b05a2a456 ] This function is used by dev_get_regmap() to retrieve a regmap for the specified device. If the device has more than one regmap, the name parameter can be used to specify one. The code here uses a pointer comparison to check for equal strings. This however will probably always fail, as the regmap->name is allocated via kstrdup_const() from the regmap's config->name. Fix this by using strcmp() instead. Signed-off-by: Marc Kleine-Budde Link: https://lore.kernel.org/r/20200703103315.267996-1-mkl@pengutronix.de Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/base/regmap/regmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 77cabde977edd..4a4efc6f54b55 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1106,7 +1106,7 @@ static int dev_get_regmap_match(struct device *dev, void *res, void *data) /* If the user didn't specify a name match any */ if (data) - return (*r)->name == data; + return !strcmp((*r)->name, data); else return 1; } -- 2.25.1