From patchwork Mon Mar 1 16:12:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 389184 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,DKIMWL_WL_HIGH, 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 D9E93C43331 for ; Mon, 1 Mar 2021 20:19:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD0B964ED4 for ; Mon, 1 Mar 2021 20:19:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243108AbhCAUSL (ORCPT ); Mon, 1 Mar 2021 15:18:11 -0500 Received: from mail.kernel.org ([198.145.29.99]:39542 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236025AbhCAUJY (ORCPT ); Mon, 1 Mar 2021 15:09:24 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 31EA7650A3; Mon, 1 Mar 2021 18:00:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614621611; bh=D2LVDaN8hZJpX1CeiMcPvE6wKFL2Bwh5v9y4bTsAd5A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xzRea7sFR99ZfsCFZRrge9ap6tWCtXJQP9G5qPkoKf3SM+w8FnNWie09JJoi2q2/F 5RQoIA5muDpcUGp+3PUnDjWQaiSwyrUJ7HWmE4sSKqT6vaigCjo8p4Uz+mk6Se8MCw ykcFHFIqlHP/Z27AEIMJPZnKZlik0ZnbIN2AU3d0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "jeffrey.lin" , Dmitry Torokhov Subject: [PATCH 5.11 579/775] Input: raydium_ts_i2c - do not send zero length Date: Mon, 1 Mar 2021 17:12:27 +0100 Message-Id: <20210301161230.069382584@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161201.679371205@linuxfoundation.org> References: <20210301161201.679371205@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: jeffrey.lin commit fafd320ae51b9c72d371585b2501f86640ea7b7d upstream. Add default write command package to prevent i2c quirk error of zero data length as Raydium touch firmware update is executed. Signed-off-by: jeffrey.lin Link: https://lore.kernel.org/r/1608031217-7247-1-git-send-email-jeffrey.lin@raydium.corp-partner.google.com Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- drivers/input/touchscreen/raydium_i2c_ts.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/input/touchscreen/raydium_i2c_ts.c +++ b/drivers/input/touchscreen/raydium_i2c_ts.c @@ -445,6 +445,7 @@ static int raydium_i2c_write_object(stru enum raydium_bl_ack state) { int error; + static const u8 cmd[] = { 0xFF, 0x39 }; error = raydium_i2c_send(client, RM_CMD_BOOT_WRT, data, len); if (error) { @@ -453,7 +454,7 @@ static int raydium_i2c_write_object(stru return error; } - error = raydium_i2c_send(client, RM_CMD_BOOT_ACK, NULL, 0); + error = raydium_i2c_send(client, RM_CMD_BOOT_ACK, cmd, sizeof(cmd)); if (error) { dev_err(&client->dev, "Ack obj command failed: %d\n", error); return error;