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 X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 3DA72C35240 for ; Fri, 24 Jan 2020 01:19:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0D6B92087E for ; Fri, 24 Jan 2020 01:19:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579828755; bh=AFL1qKM9zkNwovEGBFMBJ83gzXsaN62cIGTEMx7HV5g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ncYPW1Q3g7DRHprj/rtS9nSUEZSVzs739/AT1jQjgIK/DIen5456gVVqLvrEFsn7U JGCRrvMQ1C57TSSKZRHr9nRu8SrVVjbp/ChihZRWvcincT89u5FbFAcQU6RscDCJS8 RRSNukcmSLDdqBPd07sa8O3cPTiXxfIaK4YaYo8k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730742AbgAXBRq (ORCPT ); Thu, 23 Jan 2020 20:17:46 -0500 Received: from mail.kernel.org ([198.145.29.99]:60960 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730738AbgAXBRq (ORCPT ); Thu, 23 Jan 2020 20:17:46 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A1E5F21D7D; Fri, 24 Jan 2020 01:17:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579828665; bh=AFL1qKM9zkNwovEGBFMBJ83gzXsaN62cIGTEMx7HV5g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yFaCsm1xGJWHMbaV+PzJddlnZzgqL6XK+MiZBte7gfYwIZ4dKuHEu+AcckrutMRa7 EQWzWQKaq6oQN9HC16mSFYczebEaTNqjqCYCzaXzpHWnRB6yFdmfM07C2GcrxLeMJ2 2m+nACtf7QQPRAa9zFpsfWXWLP/wDCFl/YVND0sc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Pavel Balan , Jiri Kosina , Sasha Levin , linux-input@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 32/33] HID: Add quirk for incorrect input length on Lenovo Y720 Date: Thu, 23 Jan 2020 20:17:07 -0500 Message-Id: <20200124011708.18232-32-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200124011708.18232-1-sashal@kernel.org> References: <20200124011708.18232-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org From: Pavel Balan [ Upstream commit fd0913768701612fc2b8ab9c8a5c019133e8d978 ] Apply it to the Lenovo Y720 gaming laptop I2C peripheral then. This fixes dmesg being flooded with errors visible on un-suspend in Linux Mint 19 Cinnamon. Example of error log: <...> [ 4.326588] i2c_hid i2c-ITE33D1:00: i2c_hid_get_input: incomplete report (2/4) [ 4.326845] i2c_hid i2c-ITE33D1:00: i2c_hid_get_input: incomplete report (2/4) [ 4.327095] i2c_hid i2c-ITE33D1:00: i2c_hid_get_input: incomplete report (2/4) [ 4.327341] i2c_hid i2c-ITE33D1:00: i2c_hid_get_input: incomplete report (2/4) [ 4.327609] i2c_hid i2c-ITE33D1:00: i2c_hid_get_input: incomplete report (2/4) <...> Example of fixed log (debug on) <...> [ 3731.333183] i2c_hid i2c-ITE33D1:00: input: 02 00 [ 3731.333581] i2c_hid i2c-ITE33D1:00: input: 02 00 [ 3731.333842] i2c_hid i2c-ITE33D1:00: input: 02 00 [ 3731.334107] i2c_hid i2c-ITE33D1:00: input: 02 00 [ 3731.334367] i2c_hid i2c-ITE33D1:00: input: 02 00 <...> [jkosina@suse.cz: rebase onto more recent codebase] Signed-off-by: Pavel Balan Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin --- drivers/hid/hid-ids.h | 1 + drivers/hid/i2c-hid/i2c-hid-core.c | 16 +++++++++++++--- 2 files changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index c99d56308fbc9..df786df0c0ab9 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -631,6 +631,7 @@ #define USB_VENDOR_ID_ITE 0x048d #define USB_DEVICE_ID_ITE_LENOVO_YOGA 0x8386 #define USB_DEVICE_ID_ITE_LENOVO_YOGA2 0x8350 +#define I2C_DEVICE_ID_ITE_LENOVO_LEGION_Y720 0x837a #define USB_DEVICE_ID_ITE_LENOVO_YOGA900 0x8396 #define USB_DEVICE_ID_ITE8595 0x8595 diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c index ac44bf752ff1f..479934f7d2411 100644 --- a/drivers/hid/i2c-hid/i2c-hid-core.c +++ b/drivers/hid/i2c-hid/i2c-hid-core.c @@ -49,6 +49,8 @@ #define I2C_HID_QUIRK_NO_IRQ_AFTER_RESET BIT(1) #define I2C_HID_QUIRK_BOGUS_IRQ BIT(4) #define I2C_HID_QUIRK_RESET_ON_RESUME BIT(5) +#define I2C_HID_QUIRK_BAD_INPUT_SIZE BIT(6) + /* flags */ #define I2C_HID_STARTED 0 @@ -177,6 +179,8 @@ static const struct i2c_hid_quirks { I2C_HID_QUIRK_BOGUS_IRQ }, { USB_VENDOR_ID_ALPS_JP, HID_ANY_ID, I2C_HID_QUIRK_RESET_ON_RESUME }, + { USB_VENDOR_ID_ITE, I2C_DEVICE_ID_ITE_LENOVO_LEGION_Y720, + I2C_HID_QUIRK_BAD_INPUT_SIZE }, { 0, 0 } }; @@ -498,9 +502,15 @@ static void i2c_hid_get_input(struct i2c_hid *ihid) } if ((ret_size > size) || (ret_size < 2)) { - dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n", - __func__, size, ret_size); - return; + if (ihid->quirks & I2C_HID_QUIRK_BAD_INPUT_SIZE) { + ihid->inbuf[0] = size & 0xff; + ihid->inbuf[1] = size >> 8; + ret_size = size; + } else { + dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n", + __func__, size, ret_size); + return; + } } i2c_hid_dbg(ihid, "input: %*ph\n", ret_size, ihid->inbuf); -- 2.20.1