From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 909772566 for ; Tue, 18 Apr 2023 12:24:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 139B3C433EF; Tue, 18 Apr 2023 12:24:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1681820680; bh=CpdU1jVYuqSaDPSWTxyXajPUjp3E4/gmrQTDePFoSyQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=R5wGJGs4mmomiG6juwzDRq/TDopBRc8JvvxgwLj4hXHu/+juNS72LkiE5vwemecFi Es02dVrzkRUHyTV3njr8uap2kRd2ShNGw4A78yED8apKVS87Ad8oU6HCpOeYmbQzeX EL5RB/nOyJW6vM7C4wdy88ablfXiWdCxnFaCLGNk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Alexander Stein , Emanuele Ghidoli , Wolfram Sang , Sasha Levin Subject: [PATCH 4.14 28/37] i2c: imx-lpi2c: clean rx/tx buffers upon new message Date: Tue, 18 Apr 2023 14:21:38 +0200 Message-Id: <20230418120255.665955391@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230418120254.687480980@linuxfoundation.org> References: <20230418120254.687480980@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 ca4d554126579..511d332f47326 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