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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 16579C432C0 for ; Wed, 27 Nov 2019 20:45:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E283921775 for ; Wed, 27 Nov 2019 20:45:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574887535; bh=mG7tyWKBsFvSSI8JljWLG7ERevr6fOTFUrMhQgCm37o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=C3aOqj8cw4MV66qSPhzmC9pGHFQ1iagHGMkUKoS9MYkYr+UHJjF9zEY98WHKZBlOz v6PP4odGx49+1IA6jDpBbV0Ur7f5EUtIJOWojluMoLyfX9/BFVLUu7jm9u/5BwwMGJ mPEYWkoe2S6Jup4zi5ubhnpM15IJGFTrioR7CPEc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729257AbfK0Upd (ORCPT ); Wed, 27 Nov 2019 15:45:33 -0500 Received: from mail.kernel.org ([198.145.29.99]:56326 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729258AbfK0Up2 (ORCPT ); Wed, 27 Nov 2019 15:45:28 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E1FB321741; Wed, 27 Nov 2019 20:45:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574887528; bh=mG7tyWKBsFvSSI8JljWLG7ERevr6fOTFUrMhQgCm37o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GbSziumenpDxhLR+CukuEFKzPXvi/Q2qYT+KJKiDPmVQY45JL6MpEtdEr6iiSVRLW KSJ+1oAAZcgOYD9dtnotkf23B7V/aTa8TIlDuIuuJMEPkpigAkEopbXA13kzmQ5g/Y EU2JDTV3lVhWjVAAvDu8N2L1HmdmtpAAf3RfUr6Y= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Johan Hovold Subject: [PATCH 4.9 145/151] USB: serial: mos7840: fix remote wakeup Date: Wed, 27 Nov 2019 21:32:08 +0100 Message-Id: <20191127203047.366932195@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191127203000.773542911@linuxfoundation.org> References: <20191127203000.773542911@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Johan Hovold commit 92fe35fb9c70a00d8fbbf5bd6172c921dd9c7815 upstream. The driver was setting the device remote-wakeup feature during probe in violation of the USB specification (which says it should only be set just prior to suspending the device). This could potentially waste power during suspend as well as lead to spurious wakeups. Note that USB core would clear the remote-wakeup feature at first resume. Fixes: 3f5429746d91 ("USB: Moschip 7840 USB-Serial Driver") Cc: stable # 2.6.19 Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/mos7840.c | 5 ----- 1 file changed, 5 deletions(-) --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -2361,11 +2361,6 @@ out: goto error; } else dev_dbg(&port->dev, "ZLP_REG5 Writing success status%d\n", status); - - /* setting configuration feature to one */ - usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - 0x03, 0x00, 0x01, 0x00, NULL, 0x00, - MOS_WDR_TIMEOUT); } return 0; error: