From patchwork Mon Jan 24 18:42:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 536067 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C309EC41535 for ; Mon, 24 Jan 2022 19:51:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242895AbiAXTu6 (ORCPT ); Mon, 24 Jan 2022 14:50:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348804AbiAXTkz (ORCPT ); Mon, 24 Jan 2022 14:40:55 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 37F65C0613E6; Mon, 24 Jan 2022 11:19:39 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id E4B39B81249; Mon, 24 Jan 2022 19:19:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 07B2FC340E7; Mon, 24 Jan 2022 19:19:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1643051976; bh=QMWYLrt8iQbcEWQT/CMGJk+AiXwb31DZVl21V+GXoQs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=J39H91+yz2I/u6FG6PevGIiCQToQ/jszeZI3NnbPUnBPbMarO7e4Qe/N4QIx3h05n PLgyKc3QTlh/ogSa2iZ/EzjtHqK83XQsQdzzBKdWMGr9MukrjQREnGccKmMvTrkV13 WPweaFB1RuxTvVl0AvB+Pb1ncZ5XnNkgBwE6L4G4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jiasheng Jiang , Krzysztof Kozlowski , Mark Brown , Sasha Levin Subject: [PATCH 4.19 115/239] ASoC: samsung: idma: Check of ioremap return value Date: Mon, 24 Jan 2022 19:42:33 +0100 Message-Id: <20220124183946.761209146@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220124183943.102762895@linuxfoundation.org> References: <20220124183943.102762895@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jiasheng Jiang [ Upstream commit 3ecb46755eb85456b459a1a9f952c52986bce8ec ] Because of the potential failure of the ioremap(), the buf->area could be NULL. Therefore, we need to check it and return -ENOMEM in order to transfer the error. Fixes: f09aecd50f39 ("ASoC: SAMSUNG: Add I2S0 internal dma driver") Signed-off-by: Jiasheng Jiang Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20211228034026.1659385-1-jiasheng@iscas.ac.cn Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/samsung/idma.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/samsung/idma.c b/sound/soc/samsung/idma.c index b1f09b942410d..e397f5e10e33e 100644 --- a/sound/soc/samsung/idma.c +++ b/sound/soc/samsung/idma.c @@ -369,6 +369,8 @@ static int preallocate_idma_buffer(struct snd_pcm *pcm, int stream) buf->addr = idma.lp_tx_addr; buf->bytes = idma_hardware.buffer_bytes_max; buf->area = (unsigned char * __force)ioremap(buf->addr, buf->bytes); + if (!buf->area) + return -ENOMEM; return 0; }