From patchwork Thu May 5 18:05:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 570089 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B7963C433EF for ; Thu, 5 May 2022 18:31:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243506AbiEESfa (ORCPT ); Thu, 5 May 2022 14:35:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1385213AbiEESaP (ORCPT ); Thu, 5 May 2022 14:30:15 -0400 Received: from cloudserver094114.home.pl (cloudserver094114.home.pl [79.96.170.134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2EC9D5EDF0; Thu, 5 May 2022 11:20:48 -0700 (PDT) Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 5.0.0) id a9ec237065783df5; Thu, 5 May 2022 20:19:39 +0200 Received: from kreacher.localnet (unknown [213.134.161.219]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id 4FEE266C2F2; Thu, 5 May 2022 20:19:38 +0200 (CEST) From: "Rafael J. Wysocki" To: Linux PCI Cc: LKML , Linux PM , Mika Westerberg , Bjorn Helgaas , Nathan Chancellor , Anders Roxell Subject: [PATCH v1 04/11] PCI/PM: Unfold pci_platform_power_transition() in pci_power_up() Date: Thu, 05 May 2022 20:05:15 +0200 Message-ID: <1922486.PYKUYFuaPT@kreacher> In-Reply-To: <4738492.GXAFRqVoOG@kreacher> References: <4738492.GXAFRqVoOG@kreacher> MIME-Version: 1.0 X-CLIENT-IP: 213.134.161.219 X-CLIENT-HOSTNAME: 213.134.161.219 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvfedrfedugdduvdduucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdffueeitdfgvddtudegueejtdffteetgeefkeffvdeftddttdeuhfegfedvjefhnecukfhppedvudefrddufeegrdduiedurddvudelnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepvddufedrudefgedrudeiuddrvdduledphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedpnhgspghrtghpthhtohepjedprhgtphhtthhopehlihhnuhigqdhptghisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqphhmsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtohepmhhikhgrrdifvghsthgvrhgsvghrgheslhhinhhugidrihhnthgv lhdrtghomhdprhgtphhtthhopehhvghlghgrrghssehkvghrnhgvlhdrohhrghdprhgtphhtthhopehnrghthhgrnheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprghnuggvrhhsrdhrohigvghllheslhhinhgrrhhordhorhhg X-DCC--Metrics: v370.home.net.pl 1024; Body=7 Fuz1=7 Fuz2=7 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: Rafael J. Wysocki Some actions carried out by pci_platform_power_transition(() in pci_power_up() are redundant, but before dealing with them, make pci_power_up() call the pci_platform_power_transition() code directly (and avoid a redundant check when pm_cap is unset while at it). Signed-off-by: Rafael J. Wysocki --- drivers/pci/pci.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) Index: linux-pm/drivers/pci/pci.c =================================================================== --- linux-pm.orig/drivers/pci/pci.c +++ linux-pm/drivers/pci/pci.c @@ -1194,8 +1194,15 @@ int pci_power_up(struct pci_dev *dev) { bool need_restore = false; u16 pmcsr; + int ret; - pci_platform_power_transition(dev, PCI_D0); + ret = platform_pci_set_power_state(dev, PCI_D0); + if (!ret) { + pci_update_current_state(dev, PCI_D0); + } else if (!dev->pm_cap) { /* Fall back to PCI_D0 */ + dev->current_state = PCI_D0; + return 0; + } if (dev->current_state == PCI_D0) return 0;