From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x227HZRN/X9Kvdqq1rZwpVguJUFmk9c4kC/dFvg+IF5H6xVjX41gw3i2LrnNBNGuzkOUDZ1SC ARC-Seal: i=1; a=rsa-sha256; t=1519645974; cv=none; d=google.com; s=arc-20160816; b=kVXEnbRgo8j/MZi+VLpoCuoTWDOUYBd66HqkExo3YBdAwg8UXQ1Az6BtV9z/SNRGbo JRWWwkkuPdC4LR3JzRwnify3/BRtHuVbFcevgNkASyGW9R5hsJx5c6yMgMwexh9+pn+o pzLIwPxwYJbQR7lxmQdKDq/OA2npOwYsQmkSo+Ky9hTrb2AU/FVRTj3KH0blVpzHPHSy 78/JQmvHNf5nZxG3tPL2JP/JEr1u4/ei88rbzvYb5++fz+ntoC+LSoY1RM0DFqwY3kJZ a+d78+svOhSvKHXn4W1uvzsaewVqdLyIzyxPGmWEtejnBHjahYa+M/z9Tzh34TcLCS7x vaqA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=user-agent:organization:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :arc-authentication-results; bh=GK3TMquHFNLG91V/UTdHgZaDalQSIw4GrcsqG5bsw2I=; b=J3KLY7tcfEvAWXvvUjMvbErzLuJdruItq2UpmBYy67EQRS1ccEFIfD+Eb8tfGXcvGV UMMeiZbyD0edfaWAnxQbIU5sBObcQOFYm+YDhZZbua4gXtrznqVVPbTAS3Xgw7x6EO/T wZHlKcpRMuh7qgq7nUTtNSsFdX/ycowDmdBkM82ikdw0kCL+HrufHoWKfP2N9b7BlFkt 0g7vZ6gpe2W5Vquz8DcnPYDhdakE7Ih1M0Jc0mjAE2tRzAySyOzGjrAGUKcJGSi5GVca QHYTHXkLkiU+PMXVsdVagWVe33mzcePlBbsYko/l+IP8FrALsGVFGLi3h7QxGVGIuAkB Wzcg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of mika.westerberg@linux.intel.com designates 192.55.52.151 as permitted sender) smtp.mailfrom=mika.westerberg@linux.intel.com Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of mika.westerberg@linux.intel.com designates 192.55.52.151 as permitted sender) smtp.mailfrom=mika.westerberg@linux.intel.com X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.47,396,1515484800"; d="scan'208";a="37498120" Date: Mon, 26 Feb 2018 13:52:47 +0200 From: Mika Westerberg To: "Rafael J. Wysocki" Cc: Bjorn Helgaas , Linux PCI , Valdis Kletnieks , Mathias Nyman , Linux PM , "Rafael J. Wysocki" , Linux Kernel Mailing List , Lukas Wunner , Peter Wu , Qipeng Zha , Greg Kroah-Hartman , Andreas Noever , Dave Airlie , Qi Zheng Subject: Re: [PATCH v1 1/2] PCI: Add PCIe port runtime suspend details Message-ID: <20180226115247.GN27191@lahna.fi.intel.com> References: <151908155159.37696.9710083237704994886.stgit@bhelgaas-glaptop.roam.corp.google.com> <151908203999.37696.12678235610905422348.stgit@bhelgaas-glaptop.roam.corp.google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.9.1 (2017-09-22) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1592872970483997772?= X-GMAIL-MSGID: =?utf-8?q?1593464297331623717?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Tue, Feb 20, 2018 at 10:31:51AM +0100, Rafael J. Wysocki wrote: > On Tue, Feb 20, 2018 at 12:14 AM, Bjorn Helgaas wrote: > > From: Bjorn Helgaas > > > > Add details about how we decide whether we can put a PCI bridge in D3. > > 9d26d3a8f1b0 ("PCI: Put PCIe ports into D3 during suspend") added this > > support to reduce power consumption on Intel Sunrise Point and Broxton > > platforms. > > > > In some cases we don't use D3 for bridges even when it should work, simply > > because it's impractical to test the configuration, or we tripped over some > > possible hardware issue on older platforms. Links to discussion of the > > PCIe port runtime power management patches, which includes mention of these > > issues, are below. > > > > No functional change. > > > > Link: v1: https://lkml.kernel.org/r/1456750566-116248-1-git-send-email-mika.westerberg@linux.intel.com > > Link: v2: https://lkml.kernel.org/r/1460111790-92836-1-git-send-email-mika.westerberg@linux.intel.com > > Link: v3: https://lkml.kernel.org/r/1460628268-16204-1-git-send-email-mika.westerberg@linux.intel.com > > Link: v4: https://lkml.kernel.org/r/1461578004-129094-1-git-send-email-mika.westerberg@linux.intel.com > > Link: v5: https://lkml.kernel.org/r/1461919919-120102-1-git-send-email-mika.westerberg@linux.intel.com > > Link: v6: https://lkml.kernel.org/r/1464855435-32960-1-git-send-email-mika.westerberg@linux.intel.com > > Link: https://lkml.kernel.org/r/2858019.9TUCWsDpTB@aspire.rjw.lan > > Signed-off-by: Bjorn Helgaas > > Reviewed-by: Rafael J. Wysocki Also Reviewed-by: Mika Westerberg