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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5587C76196 for ; Sat, 1 Apr 2023 01:47:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233771AbjDABrO (ORCPT ); Fri, 31 Mar 2023 21:47:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46082 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233851AbjDABqv (ORCPT ); Fri, 31 Mar 2023 21:46:51 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A04B825564; Fri, 31 Mar 2023 18:44:50 -0700 (PDT) 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 42814B83329; Sat, 1 Apr 2023 01:44:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DECC4C433A7; Sat, 1 Apr 2023 01:44:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1680313489; bh=JjqhrmssliB9UMb6aZhj/onWYIm2uhecqJn9FsHsqJI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T3T9Nn+jSFgM115ZnAbXFNGTCztxFlA9Jp3rBDXoRAuaBuYQlQEfyd5My5GfgWzX8 R5yCYvEE/EW+wUIAtgTaIwcHs/9xDCABnpOkGGnWHJRaWWHEJWp3YUmUhH1SNsvHUQ uHdUzA3BRNkeG057/cex6Lo61RnMSj+n5e6wm2LSaQMTT84eTECOv+eoMZAHup1Aet 9mPY8eLgxTqfc+1X3hsbBRia6RRNfW28MWh6Kh01lPvIXQA/rI9JSZcBPm2tadIWKJ zv5LVT3oIMDh21bg7MZHeaBhsFiZ4VRbplB7LhFZQjTZAYtMt5gpKXiFXsrA8D8SEd lx7a3tCmJ/KeQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Alexander Stein , Emanuele Ghidoli , Wolfram Sang , Sasha Levin , aisheng.dong@nxp.com, shawnguo@kernel.org, linux-i2c@vger.kernel.org, linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 4.19 2/4] i2c: imx-lpi2c: clean rx/tx buffers upon new message Date: Fri, 31 Mar 2023 21:44:42 -0400 Message-Id: <20230401014444.3357427-2-sashal@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230401014444.3357427-1-sashal@kernel.org> References: <20230401014444.3357427-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexander Stein [ Upstream commit 987dd36c0141f6ab9f0fbf14d6b2ec3342dedb2f ] When start sending a new message clear the Rx & Tx buffer pointers in order to avoid using stale pointers. Signed-off-by: Alexander Stein Tested-by: Emanuele Ghidoli Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- drivers/i2c/busses/i2c-imx-lpi2c.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c index 06c4c767af322..a4bd49625fad8 100644 --- a/drivers/i2c/busses/i2c-imx-lpi2c.c +++ b/drivers/i2c/busses/i2c-imx-lpi2c.c @@ -468,6 +468,8 @@ static int lpi2c_imx_xfer(struct i2c_adapter *adapter, if (num == 1 && msgs[0].len == 0) goto stop; + lpi2c_imx->rx_buf = NULL; + lpi2c_imx->tx_buf = NULL; lpi2c_imx->delivered = 0; lpi2c_imx->msglen = msgs[i].len; init_completion(&lpi2c_imx->complete); -- 2.39.2