From patchwork Tue Oct 27 13:53:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 312013 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=-12.8 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=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 A1E58C56202 for ; Tue, 27 Oct 2020 17:31:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5DBAE20657 for ; Tue, 27 Oct 2020 17:31:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603819885; bh=Cx0OInTLJUkoZEKgnryxjtDkxgX4JVSHcSMcLYj6UTY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=RX9l6svsC+VuESyCdFmLh5RITh5o27NGDLh35fNHLHKXkUiyJKwaWfJURLf6DSvmY aXDDHFJirDLpKWdN/pfKuEFpKFrwC2H5z4sQ1ak/0r6VRKy5ah/J+lgSMIXnPvStSs x79h3SONTgsN1zBkWg9UWHL9O28qeHi1BzwLHZOo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762208AbgJ0Olb (ORCPT ); Tue, 27 Oct 2020 10:41:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:39876 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387822AbgJ0Oks (ORCPT ); Tue, 27 Oct 2020 10:40:48 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (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 B3A2D21D7B; Tue, 27 Oct 2020 14:40:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603809648; bh=Cx0OInTLJUkoZEKgnryxjtDkxgX4JVSHcSMcLYj6UTY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UqySKs8eZCaznAnvs74HWuKSvN06Xwa3PkBFcCtu7OD+ZpRs1UHR+cJ/Smip7vLk0 wnAp6tFHpwdS2OlCmQglU3L/FFwUnslIpIJcypnP+L5pPWRclF45+CU+9WBkOilfoE tiRcL8DdJOGYUHAtuGJO0hA4G6PAm0xE6ByajcBE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Elaine Zhang , Heiko Stuebner , Stephen Boyd , Sasha Levin Subject: [PATCH 5.4 270/408] clk: rockchip: Initialize hw to error to avoid undefined behavior Date: Tue, 27 Oct 2020 14:53:28 +0100 Message-Id: <20201027135507.570926404@linuxfoundation.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201027135455.027547757@linuxfoundation.org> References: <20201027135455.027547757@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Stephen Boyd [ Upstream commit b608f11d49ec671739604cc763248d8e8fadbbeb ] We can get down to this return value from ERR_CAST() without initializing hw. Set it to -ENOMEM so that we always return something sane. Fixes the following smatch warning: drivers/clk/rockchip/clk-half-divider.c:228 rockchip_clk_register_halfdiv() error: uninitialized symbol 'hw'. drivers/clk/rockchip/clk-half-divider.c:228 rockchip_clk_register_halfdiv() warn: passing zero to 'ERR_CAST' Cc: Elaine Zhang Cc: Heiko Stuebner Fixes: 956060a52795 ("clk: rockchip: add support for half divider") Reviewed-by: Heiko Stuebner Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin --- drivers/clk/rockchip/clk-half-divider.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/rockchip/clk-half-divider.c b/drivers/clk/rockchip/clk-half-divider.c index ba9f00dc9740c..7dd2e0b1a5866 100644 --- a/drivers/clk/rockchip/clk-half-divider.c +++ b/drivers/clk/rockchip/clk-half-divider.c @@ -167,7 +167,7 @@ struct clk *rockchip_clk_register_halfdiv(const char *name, unsigned long flags, spinlock_t *lock) { - struct clk *clk; + struct clk *clk = ERR_PTR(-ENOMEM); struct clk_mux *mux = NULL; struct clk_gate *gate = NULL; struct clk_divider *div = NULL;