From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1092440-1521803406-2-7597120535545948702 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, URIBL_RHS_DOB 1.514, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1521803406; b=Kc0yKX+LFmhLVbz4n34bLraq4YtW7pDg+/LFlB3SOvS/gBm xdceeFJ/54ce06w4+oVEy9/LawspzYnBfanCY8MVukON7PbTk+I7Qii6P3zA3EGo 2mHouKHMg1PlJx6hk6dYx7qnlrUqtBs/HevmL52SpANECo4yv4lOy8/2R9N6Qm9z UogE4/mLYiyNRgYUlH623VJHG5Ts+qmDvNOBS5as1KpAek/bYF70ABygDBZF+/y8 SlucgaXOse7lWWycSMwg4ysYH4OBaeWIeLdtM2Pf8vSNQR6TmYOLx+hM2UNm9B6b dy9wGuE1eOA+3P6g1PJW9LecQ1Je9yHwnUvYkIQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1521803406; bh=FfioUhuyvdX6R1Ulf530/ZxHUT ejPGKVP2AeHDwQq2A=; b=G4BzPjsAc0pn+OdNicxdZnDGMITXcKrnnKP1Ggx44c Ln8SQ4JLEPZIQDEUae1LnWI08h2JxGOB4PDknqT3v0ucr4HkqEaUNyiGrD1VRo3F 0OfYtyfhMrZKvzgaoL5aVUh/Q954XvJbrAVdv7GIyplpXYW9rnK7nIZtxldisMWf d790JpKoOMGE9AK4KLBM2vHGS3bYpNP2gKT9XeCQZyJankqaWrctB1h/DVTaqo5H 1STnOku+s1v+nMSu+G119C9qPAwkAHphwEYo270Yzz1mXRxLhqKxggiGgN8TxK15 jIKSepMp8echVii+O3nQ4qqywZ/Pj/pKBAKKB2k1kKAQ== ARC-Authentication-Results: i=1; mx4.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx4.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932974AbeCWKL1 (ORCPT ); Fri, 23 Mar 2018 06:11:27 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:43830 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932408AbeCWKLZ (ORCPT ); Fri, 23 Mar 2018 06:11:25 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ron Economos , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 4.9 142/177] media: [RESEND] media: dvb-frontends: Add delay to Si2168 restart Date: Fri, 23 Mar 2018 10:54:30 +0100 Message-Id: <20180323094211.472487890@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180323094205.090519271@linuxfoundation.org> References: <20180323094205.090519271@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ron Economos [ Upstream commit 380a6c86457573aa42d27ae11e025eb25941a0b7 ] On faster CPUs a delay is required after the resume command and the restart command. Without the delay, the restart command often returns -EREMOTEIO and the Si2168 does not restart. Note that this patch fixes the same issue as https://patchwork.linuxtv.org/patch/44304/, but I believe my udelay() fix addresses the actual problem. Signed-off-by: Ron Economos Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/media/dvb-frontends/si2168.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/media/dvb-frontends/si2168.c +++ b/drivers/media/dvb-frontends/si2168.c @@ -14,6 +14,8 @@ * GNU General Public License for more details. */ +#include + #include "si2168_priv.h" static const struct dvb_frontend_ops si2168_ops; @@ -378,6 +380,7 @@ static int si2168_init(struct dvb_fronte if (ret) goto err; + udelay(100); memcpy(cmd.args, "\x85", 1); cmd.wlen = 1; cmd.rlen = 1;