Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753543AbbLRPZ0 (ORCPT ); Fri, 18 Dec 2015 10:25:26 -0500 Received: from relmlor4.renesas.com ([210.160.252.174]:55423 "EHLO relmlie3.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751019AbbLRPZY convert rfc822-to-8bit (ORCPT ); Fri, 18 Dec 2015 10:25:24 -0500 X-IronPort-AV: E=Sophos;i="5.20,446,1444662000"; d="scan'208";a="200869644" From: Phil Edworthy To: Wolfram Sang CC: Simon Horman , Bjorn Helgaas , Geert Uytterhoeven , "linux-kernel@vger.kernel.org" , "linux-pci@vger.kernel.org" , "linux-sh@vger.kernel.org" Subject: RE: [PATCH 2/4] PCI: rcar: Support runtime PM link state L1 handling in pcie-rcar Thread-Topic: [PATCH 2/4] PCI: rcar: Support runtime PM link state L1 handling in pcie-rcar Thread-Index: AQHROM4m9nRzodEPBkeH5670ym6BC57PLLcAgAGTswCAAAfrAIAAFl/w Date: Fri, 18 Dec 2015 15:25:17 +0000 Message-ID: References: <1450358557-28376-1-git-send-email-phil.edworthy@renesas.com> <1450358557-28376-3-git-send-email-phil.edworthy@renesas.com> <20151217133058.GA20372@katana> <20151218140412.GA4595@katana> In-Reply-To: <20151218140412.GA4595@katana> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=phil.edworthy@renesas.com; x-originating-ip: [193.141.220.21] x-microsoft-exchange-diagnostics: 1;PS1PR06MB1177;5:zzv3S1BzQMMoA4mmEJpBqwgKHq8nrB2aadW0b+RaQU5viXlgO3buB5W7sLzmv+s6fGmc3KwiI1JkToI6S6lgzHWOoqDk22I3ycAheUeEWgi6mPfDqBNgXnDAghQZd2gd/igi9nfx3NdEkPUMlM/7KQ==;24:0RR4PLPoBZDAoUhEJKAXeCQ/l+YXrXnM05cbMquU/3/5nzjB4tPWErQO6HrNDrsoomc+8N8LYi9c4YeZKtOfRUQW4rxurX7i0hFqNBDFZBQ=;20:DUbLoCKY6EpuCc6O7ikq1nYgJdgHVfyO612yH3LzQdqFip6lm9OHI9mZP1iFSZdj17R7MUz0OkMPJ3Ho2ZSNJCXz6ptPqjZcIwTOX3RxhjIEi7sX1PveJ+/27IeP9esH7gp+sRXt6+n2y/L7ayjUUSSvuNvUvSDfMhZDRujhwqE= x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:PS1PR06MB1177; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(601004)(2401047)(520078)(8121501046)(5005006)(3002001)(10201501046);SRVR:PS1PR06MB1177;BCL:0;PCL:0;RULEID:;SRVR:PS1PR06MB1177; x-forefront-prvs: 07943272E1 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(6009001)(199003)(189002)(24454002)(189998001)(5001960100002)(92566002)(76176999)(77096005)(54356999)(2950100001)(2900100001)(50986999)(110136002)(101416001)(33656002)(106116001)(106356001)(40100003)(105586002)(122556002)(87936001)(86362001)(93886004)(586003)(5002640100001)(76576001)(1220700001)(3846002)(10400500002)(1096002)(74316001)(5008740100001)(5003600100002)(66066001)(11100500001)(5004730100002)(81156007)(97736004)(6116002)(102836003);DIR:OUT;SFP:1102;SCL:1;SRVR:PS1PR06MB1177;H:PS1PR06MB1180.apcprd06.prod.outlook.com;FPR:;SPF:None;PTR:InfoNoRecords;A:1;MX:1;LANG:en; spamdiagnosticoutput: 1:23 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 X-OriginatorOrg: renesas.com X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Dec 2015 15:25:17.9791 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 53d82571-da19-47e4-9cb4-625a166a4a2a X-MS-Exchange-Transport-CrossTenantHeadersStamped: PS1PR06MB1177 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 636 Lines: 18 Hi Wolfram, On 18 December 2015 14:04, Wolfram Sang wrote: > > Since the hardware doesn't support hot plug, I believe this loop will > > always exit very quickly. Unless someone has taken a hammer to the HW > > of course. > > I know what you mean. But since readl_poll_timeout() makes it easy, we > should better be safe than sorry. I haven't see that one before, very handy! Thanks Phil -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/