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=-19.5 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, 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 81764C4338F for ; Mon, 26 Jul 2021 16:21:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6A7A160F5E for ; Mon, 26 Jul 2021 16:21:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238228AbhGZPlI (ORCPT ); Mon, 26 Jul 2021 11:41:08 -0400 Received: from mail.kernel.org ([198.145.29.99]:38490 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237461AbhGZPXX (ORCPT ); Mon, 26 Jul 2021 11:23:23 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9116160E09; Mon, 26 Jul 2021 16:03:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1627315432; bh=93/ygrkXGPdvffaLbMHMCEDDSXAGJSn/guApQwYNnvk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WNBI2VwBYsJGQotuSaLAfy6oCSRNeEI3U56kKMkSmMjD8JB1+8uK/aAN7q6FDzvj6 kuRQfzb88Q5kEcvb4ul2z6Naj45MLGsgXgQ6h+Fs0ix0OQPYR8hgbf0hG4GrPGDjuW ucgdWxRIexlsnZVq+n0PeShksK8HfzQmy2z4KXdw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Vincent Palatin , Sasha Levin Subject: [PATCH 5.10 094/167] Revert "USB: quirks: ignore remote wake-up on Fibocom L850-GL LTE modem" Date: Mon, 26 Jul 2021 17:38:47 +0200 Message-Id: <20210726153842.547054974@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210726153839.371771838@linuxfoundation.org> References: <20210726153839.371771838@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Vincent Palatin [ Upstream commit f3a1a937f7b240be623d989c8553a6d01465d04f ] This reverts commit 0bd860493f81eb2a46173f6f5e44cc38331c8dbd. While the patch was working as stated,ie preventing the L850-GL LTE modem from crashing on some U3 wake-ups due to a race condition between the host wake-up and the modem-side wake-up, when using the MBIM interface, this would force disabling the USB runtime PM on the device. The increased power consumption is significant for LTE laptops, and given that with decently recent modem firmwares, when the modem hits the bug, it automatically recovers (ie it drops from the bus, but automatically re-enumerates after less than half a second, rather than being stuck until a power cycle as it was doing with ancient firmware), for most people, the trade-off now seems in favor of re-enabling it by default. For people with access to the platform code, the bug can also be worked-around successfully by changing the USB3 LFPM polling off-time for the XHCI controller in the BIOS code. Signed-off-by: Vincent Palatin Link: https://lore.kernel.org/r/20210721092516.2775971-1-vpalatin@chromium.org Fixes: 0bd860493f81 ("USB: quirks: ignore remote wake-up on Fibocom L850-GL LTE modem") Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/core/quirks.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 21e7522655ac..a54a735b6384 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -502,10 +502,6 @@ static const struct usb_device_id usb_quirk_list[] = { /* DJI CineSSD */ { USB_DEVICE(0x2ca3, 0x0031), .driver_info = USB_QUIRK_NO_LPM }, - /* Fibocom L850-GL LTE Modem */ - { USB_DEVICE(0x2cb7, 0x0007), .driver_info = - USB_QUIRK_IGNORE_REMOTE_WAKEUP }, - /* INTEL VALUE SSD */ { USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME }, -- 2.30.2