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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 7C75EC43462 for ; Mon, 10 May 2021 12:05:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4E83161464 for ; Mon, 10 May 2021 12:05:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238456AbhEJMEp (ORCPT ); Mon, 10 May 2021 08:04:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:39736 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236326AbhEJLHv (ORCPT ); Mon, 10 May 2021 07:07:51 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B5CEA61968; Mon, 10 May 2021 10:59:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620644400; bh=thT2zXXSLEyJO8vrhb/pHhr0VBGcHpreWczWqA3O9VA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kD1XnoUEbl/tzlZ2b2JIQfZuvGt+cb8t580Ygsa2/2N1r7pOMGpx4gvu0HmNT5s6R 8O5Y0TBc0pVQ3GMLW5hJS2zoq66C8OopmWdWw+Pcw1uStsiHG8871IvlfWd+VAonNv RVwfQILIgDwdGQhtqdusQ1pI5MWkQm67WikJGv6o= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dmitry Osipenko , Daniel Lezcano , Anton Bambura , Matt Merhar , Peter Geis Subject: [PATCH 5.12 066/384] cpuidle: tegra: Fix C7 idling state on Tegra114 Date: Mon, 10 May 2021 12:17:35 +0200 Message-Id: <20210510102017.064750530@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210510102014.849075526@linuxfoundation.org> References: <20210510102014.849075526@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dmitry Osipenko commit 32c8c34d8132b5fe8497c2538597445a0d65c29d upstream. Trusted Foundation firmware doesn't implement the do_idle call and in this case suspending should fall back to the common suspend path. In order to fix this issue we will unconditionally set the NOFLUSH_L2 mode via firmware call, which is a NO-OP on Tegra30/124, and then proceed to the C7 idling, like it was done by the older Tegra114 cpuidle driver. Fixes: 14e086baca50 ("cpuidle: tegra: Squash Tegra114 driver into the common driver") Cc: stable@vger.kernel.org # 5.7+ Reported-by: Anton Bambura # TF701 T114 Tested-by: Anton Bambura # TF701 T114 Tested-by: Matt Merhar # Ouya T30 Tested-by: Peter Geis # Ouya T30 Signed-off-by: Dmitry Osipenko Reviewed-by: Daniel Lezcano Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20210302095405.28453-1-digetx@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/cpuidle/cpuidle-tegra.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) --- a/drivers/cpuidle/cpuidle-tegra.c +++ b/drivers/cpuidle/cpuidle-tegra.c @@ -135,13 +135,13 @@ static int tegra_cpuidle_c7_enter(void) { int err; - if (tegra_cpuidle_using_firmware()) { - err = call_firmware_op(prepare_idle, TF_PM_MODE_LP2_NOFLUSH_L2); - if (err) - return err; + err = call_firmware_op(prepare_idle, TF_PM_MODE_LP2_NOFLUSH_L2); + if (err && err != -ENOSYS) + return err; - return call_firmware_op(do_idle, 0); - } + err = call_firmware_op(do_idle, 0); + if (err != -ENOSYS) + return err; return cpu_suspend(0, tegra30_pm_secondary_cpu_suspend); }