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,URIBL_BLOCKED,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 83FA5CA9EAB for ; Fri, 18 Oct 2019 22:22:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 56FB821852 for ; Fri, 18 Oct 2019 22:22:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1571437340; bh=DNsavMn9AsrBUB0Q82v+6fzdVdaj+YGTYgPJXT7NkOY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Nt36uk/PK1o93KMZ0sB76Ii5qFM/kys41/jzof0qc8y10hcM64ndQP2vznUonkEQY 4GdvtVV+IO2nOprXZ5BL+J9+1olK4N1jMi9AG7D54rbUZ/v8wr6sTJWPXN9E9z6dDw yPtNQMldEJSE0RDiuaozzJ8OJ2Rjbz32M35gH29w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726205AbfJRWWS (ORCPT ); Fri, 18 Oct 2019 18:22:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:37904 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730474AbfJRWF4 (ORCPT ); Fri, 18 Oct 2019 18:05:56 -0400 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 315DC20679; Fri, 18 Oct 2019 22:05:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1571436355; bh=DNsavMn9AsrBUB0Q82v+6fzdVdaj+YGTYgPJXT7NkOY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ToRknfFaDN8qFJlOfPaWFGHmlxojdaylXqnpgOgYqgg2FohK89XYt5BPFqfe5LoqT rAwKcpNkW2ywa79sxsCPQhfSH3UmviXgPmCP+qpbW0wff/k3xgIHCDEek7IAtRf+1P srNslYM/gQCkDUTWKPA5MVpA4WXXXBHXX0HMIWjc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kai-Heng Feng , Jiri Kosina , Sasha Levin , linux-input@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 017/100] HID: i2c-hid: Disable runtime PM for LG touchscreen Date: Fri, 18 Oct 2019 18:04:02 -0400 Message-Id: <20191018220525.9042-17-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191018220525.9042-1-sashal@kernel.org> References: <20191018220525.9042-1-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: Kai-Heng Feng [ Upstream commit 86c31524b27c7e686841dd4a79eda95cfd989f16 ] LG touchscreen (1fd2:8001) stops working after reboot: [ 4.859153] i2c_hid i2c-SAPS2101:00: i2c_hid_get_input: incomplete report (64/66) [ 4.936070] i2c_hid i2c-SAPS2101:00: i2c_hid_get_input: incomplete report (64/66) [ 9.948224] i2c_hid i2c-SAPS2101:00: failed to reset device. The device in question stops working after receives SLEEP, ON, SLEEP commands in a short period. The scenario is like this: - Once the desktop session closes, it also closed the hid device, so the device gets runtime suspended and receives a SLEEP command. - Before calling shutdown callback, it gets runtime resumed and received an ON command. - In the shutdown callback, it receives another SLEEP command. I failed to find a reliable interval between ON/SLEEP commands that can make it work, so let's simply disable runtime PM for the device. Signed-off-by: Kai-Heng Feng Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin --- drivers/hid/hid-ids.h | 1 + drivers/hid/i2c-hid/i2c-hid-core.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 0eeb273fb73d2..6b33117ca60e5 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -713,6 +713,7 @@ #define USB_VENDOR_ID_LG 0x1fd2 #define USB_DEVICE_ID_LG_MULTITOUCH 0x0064 #define USB_DEVICE_ID_LG_MELFAS_MT 0x6007 +#define I2C_DEVICE_ID_LG_8001 0x8001 #define USB_VENDOR_ID_LOGITECH 0x046d #define USB_DEVICE_ID_LOGITECH_AUDIOHUB 0x0a0e diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c index 3cde7c1b9c33c..8555ce7e737b3 100644 --- a/drivers/hid/i2c-hid/i2c-hid-core.c +++ b/drivers/hid/i2c-hid/i2c-hid-core.c @@ -177,6 +177,8 @@ static const struct i2c_hid_quirks { I2C_HID_QUIRK_NO_RUNTIME_PM }, { I2C_VENDOR_ID_RAYDIUM, I2C_PRODUCT_ID_RAYDIUM_4B33, I2C_HID_QUIRK_DELAY_AFTER_SLEEP }, + { USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_8001, + I2C_HID_QUIRK_NO_RUNTIME_PM }, { 0, 0 } }; -- 2.20.1