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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 A9922C433E8 for ; Tue, 14 Jul 2020 14:43:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 75E79206F5 for ; Tue, 14 Jul 2020 14:43:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594737816; bh=gR1bXnNYeHlVk4gK9+JxbsaS8Ek93pSFC0CbCYM3/4Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ETrmf7vLvkOCJAUM2HDlkbyJorHipyeXZjnvEvHQQTEuYfmwawiHgaQS4fvZaRoUo 7+A2y4OhJgSuZKbsgHin5TkpHj+ulQMOvpmrN7fl5FDh1/TiBvVsdk49idVzsgZKXx 5rESAPoNNnkRxRTnfh83P54/aowEE1NCmAdVKt+w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728993AbgGNOjd (ORCPT ); Tue, 14 Jul 2020 10:39:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:54818 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728967AbgGNOjb (ORCPT ); Tue, 14 Jul 2020 10:39:31 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EC3C72251E; Tue, 14 Jul 2020 14:39:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594737570; bh=gR1bXnNYeHlVk4gK9+JxbsaS8Ek93pSFC0CbCYM3/4Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=M8tjx12GvzHT53r9Kc8mq8UAVKiMMP+Px9lBPv6ZZT3qdwwmZV2hqms9Qe0FZVu4m ZuodYa3todDoYVmstGwRTgMbABVVw1OL/2O86jB4Mk9zihENRWTxdzg5UABSpmS1Iv ENz8jbcbEvqryiA8PxWUsECn+eOyrQN0D2D7PJk4= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tom Rix , Andrew Lunn , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org, clang-built-linux@googlegroups.com Subject: [PATCH AUTOSEL 5.4 13/18] net: sky2: initialize return of gm_phy_read Date: Tue, 14 Jul 2020 10:39:09 -0400 Message-Id: <20200714143914.4035489-13-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200714143914.4035489-1-sashal@kernel.org> References: <20200714143914.4035489-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Tom Rix [ Upstream commit 28b18e4eb515af7c6661c3995c6e3c34412c2874 ] clang static analysis flags this garbage return drivers/net/ethernet/marvell/sky2.c:208:2: warning: Undefined or garbage value returned to caller [core.uninitialized.UndefReturn] return v; ^~~~~~~~ static inline u16 gm_phy_read( ... { u16 v; __gm_phy_read(hw, port, reg, &v); return v; } __gm_phy_read can return without setting v. So handle similar to skge.c's gm_phy_read, initialize v. Signed-off-by: Tom Rix Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/marvell/sky2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index 5f56ee83e3b10..df7c23cd33600 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -203,7 +203,7 @@ static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val) static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg) { - u16 v; + u16 v = 0; __gm_phy_read(hw, port, reg, &v); return v; } -- 2.25.1