From patchwork Mon Dec 28 12:48:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 353823 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 274EDC433E9 for ; Mon, 28 Dec 2020 13:29:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EE2EC22B3B for ; Mon, 28 Dec 2020 13:29:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390142AbgL1N3l (ORCPT ); Mon, 28 Dec 2020 08:29:41 -0500 Received: from mail.kernel.org ([198.145.29.99]:58438 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390139AbgL1N3j (ORCPT ); Mon, 28 Dec 2020 08:29:39 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id AC0DE2063A; Mon, 28 Dec 2020 13:28:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1609162139; bh=e7PJ60N0tiJPWbx21m2LVM5TJk2QavQRE4Mm0hJiDA8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nqLeJKFKlvu3t2zzfmGucrndQ4Kjq1OanGnPRIHNJsuRRANLT4/5/u1q8EGhanVlq ug3+AO+1C4oR53GMVHQEv4Lg5Rfg2i2+ylYloFPFullfLN+44YP2u92vlzxRrcQ8+D S+fJAYKtEwRS7/JPlOEXyEPBVMxkcNaz/Y91CE5I= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chuhong Yuan , Mark Brown , Sasha Levin Subject: [PATCH 4.19 201/346] ASoC: jz4740-i2s: add missed checks for clk_get() Date: Mon, 28 Dec 2020 13:48:40 +0100 Message-Id: <20201228124929.511997569@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201228124919.745526410@linuxfoundation.org> References: <20201228124919.745526410@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Chuhong Yuan [ Upstream commit 1c1fb2653a0c2e3f310c07eacd8fc3a10e08c97a ] jz4740_i2s_set_sysclk() does not check the return values of clk_get(), while the file dereferences the pointers in clk_put(). Add the missed checks to fix it. Fixes: 11bd3dd1b7c2 ("ASoC: Add JZ4740 ASoC support") Signed-off-by: Chuhong Yuan Link: https://lore.kernel.org/r/20201203144227.418194-1-hslester96@gmail.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/jz4740/jz4740-i2s.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sound/soc/jz4740/jz4740-i2s.c b/sound/soc/jz4740/jz4740-i2s.c index e099c0505b765..2c6b0ac97c684 100644 --- a/sound/soc/jz4740/jz4740-i2s.c +++ b/sound/soc/jz4740/jz4740-i2s.c @@ -318,10 +318,14 @@ static int jz4740_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, switch (clk_id) { case JZ4740_I2S_CLKSRC_EXT: parent = clk_get(NULL, "ext"); + if (IS_ERR(parent)) + return PTR_ERR(parent); clk_set_parent(i2s->clk_i2s, parent); break; case JZ4740_I2S_CLKSRC_PLL: parent = clk_get(NULL, "pll half"); + if (IS_ERR(parent)) + return PTR_ERR(parent); clk_set_parent(i2s->clk_i2s, parent); ret = clk_set_rate(i2s->clk_i2s, freq); break;