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=-8.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 B1BAFC433DB for ; Fri, 22 Jan 2021 10:07:33 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 497D5235E4 for ; Fri, 22 Jan 2021 10:07:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 497D5235E4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=XmBSz8aJkJ9Yww4M2opIXk3bDuQLzkQIJYvDtAz6lEo=; b=XESbxZiIITscmQ49FPUglSln3 FrMv6dm09oRMCOTqTkqa2i0QNFXcG+UqA4gYhlzUsiT4IUD43E7nmt0Lysil+eu+BtDJn0JQlZvCh BA9HJfGPjQe/KKcIQR0+ZgW1OjgYDnYfFROInizCQvDud1Bv7ZD1ruU9tvCV4ryFLdGTI04+5DC24 T7M33eaIwE0bkFC3hLBG1ZDbGVDqtl0KdeyGBsalbn7XrvWalNmFXdL/5HzyIBT2I+LYfyxQ1vxDv dzilue2lKAG88fqWiPVGh/GDzwtezyUfL4AKZ7Bqzek2KVG1kuesSlXRxeiqiANdmF3NHmFr4zqQk FypkiJ30g==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l2tKJ-000125-Jf; Fri, 22 Jan 2021 10:05:59 +0000 Received: from mga04.intel.com ([192.55.52.120]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l2tKG-000119-4h; Fri, 22 Jan 2021 10:05:57 +0000 IronPort-SDR: 6R0tQiDEtQlIW8M367Xzc2IS70QliD/vsLhyc1MzilNGmQoGjkUeoVq9Bv7xFeEIMHF4g5BlRz JwrW2dpsIoNQ== X-IronPort-AV: E=McAfee;i="6000,8403,9871"; a="176851396" X-IronPort-AV: E=Sophos;i="5.79,366,1602572400"; d="scan'208";a="176851396" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jan 2021 02:05:52 -0800 IronPort-SDR: GTVcV40CII561+g1c4ZQEaXgUOCdiGelZbxh/WWOVbfil8fndYoLNlP0ch3/or33rw5JoYOFYX F08IjTXyVxVg== X-IronPort-AV: E=Sophos;i="5.79,366,1602572400"; d="scan'208";a="427923843" Received: from lahna.fi.intel.com (HELO lahna) ([10.237.72.163]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jan 2021 02:05:47 -0800 Received: by lahna (sSMTP sendmail emulation); Fri, 22 Jan 2021 12:05:45 +0200 Date: Fri, 22 Jan 2021 12:05:45 +0200 From: Mika Westerberg To: Mingchuang Qiao Subject: Re: [PATCH v2] PCI: Re-enable downstream port LTR if it was previously enabled Message-ID: <20210122100545.GL1988617@lahna.fi.intel.com> References: <20210121223139.GA2698934@bjorn-Precision-5520> <1611298991.5980.42.camel@mcddlt001> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1611298991.5980.42.camel@mcddlt001> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210122_050556_323619_B526F17E X-CRM114-Status: GOOD ( 24.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-pci@vger.kernel.org, lambert.wang@mediatek.com, "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, matthias.bgg@gmail.com, Alex Williamson , Bjorn Helgaas , Utkarsh H Patel , haijun.liu@mediatek.com, Bjorn Helgaas , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGksCgpPbiBGcmksIEphbiAyMiwgMjAyMSBhdCAwMzowMzoxMVBNICswODAwLCBNaW5nY2h1YW5n IFFpYW8gd3JvdGU6Cj4gT24gVGh1LCAyMDIxLTAxLTIxIGF0IDE2OjMxIC0wNjAwLCBCam9ybiBI ZWxnYWFzIHdyb3RlOgo+ID4gWytjYyBBbGV4IGFuZCBNaW5nY2h1YW5nIGV0IGFsIGZyb20KPiA+ IGh0dHBzOi8vbG9yZS5rZXJuZWwub3JnL3IvMjAyMTAxMTIwNzI3MzkuMzE2MjQtMS1taW5nY2h1 YW5nLnFpYW9AbWVkaWF0ZWsuY29tXQo+ID4gCj4gPiBPbiBUdWUsIEphbiAxOSwgMjAyMSBhdCAw NDoxNDoxMFBNICswMzAwLCBNaWthIFdlc3RlcmJlcmcgd3JvdGU6Cj4gPiA+IFBDSWUgcjUuMCwg c2VjIDcuNS4zLjE2IHNheXMgdGhhdCB0aGUgZG93bnN0cmVhbSBwb3J0cyBtdXN0IHJlc2V0IHRo ZQo+ID4gPiBMVFIgZW5hYmxlIGJpdCBpZiB0aGUgbGluayBnb2VzIGRvd24gKHBvcnQgZ29lcyBE TF9Eb3duIHN0YXR1cykuIE5vdywgaWYKPiA+ID4gd2UgaGFkIExUUiBwcmV2aW91c2x5IGVuYWJs ZWQgYW5kIHRoZSBQQ0llIGVuZHBvaW50IGdldHMgaG90LXJlbW92ZWQgYW5kCj4gPiA+IHRoZW4g aG90LWFkZGVkIGJhY2sgdGhlIC0+bHRyX3BhdGggb2YgdGhlIGRvd25zdHJlYW0gcG9ydCBpcyBz dGlsbCBzZXQKPiA+ID4gYnV0IHRoZSBwb3J0IG5vdyBkb2VzIG5vdCBoYXZlIHRoZSBMVFIgZW5h YmxlIGJpdCBzZXQgYW55bW9yZS4KPiA+ID4gCj4gPiA+IEZvciB0aGlzIHJlYXNvbiBjaGVjayBp ZiB0aGUgYnJpZGdlIHVwc3RyZWFtIGhhZCBMVFIgZW5hYmxlZCBwcmV2aW91c2x5Cj4gPiA+IGFu ZCByZS1lbmFibGUgaXQgYmVmb3JlIGVuYWJsaW5nIExUUiBmb3IgdGhlIGVuZHBvaW50Lgo+ID4g PiAKPiA+ID4gUmVwb3J0ZWQtYnk6IFV0a2Fyc2ggSCBQYXRlbCA8dXRrYXJzaC5oLnBhdGVsQGlu dGVsLmNvbT4KPiA+ID4gU2lnbmVkLW9mZi1ieTogTWlrYSBXZXN0ZXJiZXJnIDxtaWthLndlc3Rl cmJlcmdAbGludXguaW50ZWwuY29tPgo+ID4gCj4gPiBJIHRoaW5rIHRoaXMgYW5kIE1pbmdjaHVh bmcncyBwYXRjaCwgd2hpY2ggaXMgZXNzZW50aWFsbHkgaWRlbnRpY2FsLAo+ID4gYXJlIHJpZ2h0 IGFuZCBzb2x2ZXMgdGhlIHByb2JsZW0gZm9yIGhvdC1yZW1vdmUvaG90LWFkZC4gIEluIHRoYXQK PiA+IHNjZW5hcmlvIHdlIGNhbGwgcGNpX2NvbmZpZ3VyZV9sdHIoKSBvbiB0aGUgaG90LWFkZGVk IGRldmljZSwgYW5kCj4gPiB3aXRoIHRoaXMgcGF0Y2gsIHdlJ2xsIHJlLWVuYWJsZSBMVFIgb24g dGhlIGJyaWRnZSBsZWFkaW5nIHRvIHRoZSBuZXcKPiA+IGRldmljZSBiZWZvcmUgZW5hYmxpbmcg TFRSIG9uIHRoZSBuZXcgZGV2aWNlIGl0c2VsZi4KPiA+IAo+ID4gQnV0IGRvbid0IHdlIGhhdmUg YSBzaW1pbGFyIHByb2JsZW0gaWYgd2Ugc2ltcGx5IGRvIGEgRnVuZGFtZW50YWwKPiA+IFJlc2V0 IG9uIGEgZGV2aWNlPyAgSSB0aGluayB0aGUgcmVzZXQgcGF0aCB3aWxsIHJlc3RvcmUgdGhlIGRl dmljZSdzCj4gPiBzdGF0ZSwgaW5jbHVkaW5nIFBDSV9FWFBfREVWQ1RMMiwgYnV0IGl0IGRvZXNu J3QgZG8gYW55dGhpbmcgd2l0aCB0aGUKPiA+IHVwc3RyZWFtIGJyaWRnZSwgZG9lcyBpdD8KPiA+ IAo+IAo+IFllcy4gSSB0aGluayB0aGUgc2FtZSBwcm9ibGVtIGV4aXN0cyB1bmRlciBzdWNoIHNj ZW5hcmlvLCBhbmQgdGhhdOKAmXMgdGhlCj4gaXNzdWUgbXkgcGF0Y2ggaW50ZW5kcyB0byByZXNv bHZlLgo+IEkgYWxzbyBwcmVwYXJlZCBhIHYyIHBhdGNoIGZvciByZXZpZXcodXBkYXRlIHRoZSBw YXRjaCBkZXNjcmlwdGlvbikuCj4gU2hhbGwgSSBzdWJtaXQgdGhlIHYyIHBhdGNoIGZvciByZXZp ZXc/CgpJIGxvb2tlZCBhdCB5b3VyIHBhdGNoIGFuZCBpbmRlZWQgaXQgaXMgZXNzZW50aWFsbHkg ZG9pbmcgdGhlIHNhbWUgYXMKdGhpcyBvbmUuIFNvIGxldCdzIGZvcmdldCB0aGlzIHBhdGNoIGFu ZCBnbyBmb3J3YXJkIHdpdGggeW91cnMgOikKCldvdWxkIHlvdSBsaWtlIHRvIGV4cGFuZCB5b3Vy IHBhdGNoIHRvIGhhbmRsZSB0aGUgcmVzZXQgY2FzZSB0b28gdGhhdApCam9ybiBkZXNyaWJlcyBi ZWxvdz8KCj4gPiBTbyBpZiBhIGJyaWRnZSBhbmQgYSBkZXZpY2UgYmVsb3cgaXQgYm90aCBoYXZl IExUUiBlbmFibGVkLCBjYW4ndCB3ZQo+ID4gaGF2ZSB0aGUgZm9sbG93aW5nOgo+ID4gCj4gPiAg IC0gYnJpZGdlIExUUiBlbmFibGVkCj4gPiAgIC0gZGV2aWNlIExUUiBlbmFibGVkCj4gPiAgIC0g cmVzZXQgZGV2aWNlLCBlLmcuLCB2aWEgU2Vjb25kYXJ5IEJ1cyBSZXNldAo+ID4gICAtIGxpbmsg Z29lcyBkb3duLCBicmlkZ2UgZGlzYWJsZXMgTFRSCj4gPiAgIC0gbGluayBjb21lcyBiYWNrIHVw LCBMVFIgZGlzYWJsZWQgaW4gYm90aCBicmlkZ2UgYW5kIGRldmljZQo+ID4gICAtIHJlc3RvcmUg ZGV2aWNlIHN0YXRlLCBpbmNsdWRpbmcgTFRSIGVuYWJsZQo+ID4gICAtIGRldmljZSBzZW5kcyBM VFIgbWVzc2FnZQo+ID4gICAtIGJyaWRnZSByZXBvcnRzIFVuc3VwcG9ydGVkIFJlcXVlc3QKCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1r ZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpo dHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJu ZWwK