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 409CFC761A6 for ; Sat, 1 Apr 2023 01:59:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233732AbjDAB7w (ORCPT ); Fri, 31 Mar 2023 21:59:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52034 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234059AbjDAB7h (ORCPT ); Fri, 31 Mar 2023 21:59:37 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B55FED52E; Fri, 31 Mar 2023 18:58:22 -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 dfw.source.kernel.org (Postfix) with ESMTPS id A00C962D17; Sat, 1 Apr 2023 01:44:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0F0C2C433D2; Sat, 1 Apr 2023 01:44:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1680313497; bh=OU6LrADSJFPUoD4Z7xbLPIIHonhmgwqmOMrgb7NVm/8=; h=From:To:Cc:Subject:Date:From; b=iwbpvF1AOy8Oa+5mKf0UsHVxJ8OOFQta871svlGU6FNkgZd0TO9Q81NmEMV8wcWjr iBMvs3nrCK8FaHBhQodh5+qPezByRdoGT1RZqAgxQ9DSRC7ViS2SmEmo9vadtfQXox xadi4aTHBVSmV6Yx7SdLsyfbhn5kr8nzi5IK6EqGRTq8JSORqw4nD9WcOVStHZy4RY 0boreogJOl/UJgaZVyMHbHJz4YjRTNSXpop1kIncJYk2Kbf7L7ZNTlHGUn16ECQmp2 em1pQ1sYoRgWVZh9kQJT8ri0IafJ24Hgb7/SPiueKiU07cDiSHM0DZpq19oRpvAEP9 otM+phjBFUlYw== 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 4.14 1/3] i2c: imx-lpi2c: clean rx/tx buffers upon new message Date: Fri, 31 Mar 2023 21:44:52 -0400 Message-Id: <20230401014454.3357487-1-sashal@kernel.org> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@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 e86801a631206..dc89d8049d0f5 100644 --- a/drivers/i2c/busses/i2c-imx-lpi2c.c +++ b/drivers/i2c/busses/i2c-imx-lpi2c.c @@ -475,6 +475,8 @@ 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