From patchwork Sun May 29 18:13:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Walle X-Patchwork-Id: 12864226 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D8D0CC433F5 for ; Sun, 29 May 2022 18:15:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=prkdAkReJ7w1YqURlxMJsh2jK+PJdeT1y2oDEkufMY4=; b=sJs14rPQt13WyN UNDuciNzdIPe/tGYCpJW+vGOu4xqnobML1+v5avtRu6td7O+rBpKOKwU1gtvTw/DeeJOIniuOqyR9 JYdIkwEkVO1+kTvJ4cVaW3pJ5lYHbkTzMsc+7XFR7G5hunI/qZhG7b502yPg4ywUp4QeW9VdcKNjX vabbRtyrmFKWm3vM5huSfuXV4ZJ1+hDKQutWYM60NUiepuwF3FrNWNFM8sSUb30sNEOHWUMJmH1je 9DFffWM2QB1SOJWYiMPJIsZjHG9ecs9KzBT5B8F8t7QG6t45pqh3Nz02WWM9JoGTtnxzyhouT89pQ qs/vr/APA8JsmrniaJsA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nvNQE-004RAP-Es; Sun, 29 May 2022 18:13:50 +0000 Received: from ssl.serverraum.org ([176.9.125.105]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nvNQB-004R92-7c for linux-arm-kernel@lists.infradead.org; Sun, 29 May 2022 18:13:48 +0000 Received: from mwalle01.kontron.local. (unknown [213.135.10.150]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id 725682222E; Sun, 29 May 2022 20:13:36 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1653848021; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=6n/6v/VC4xmIj9vHN5pvSgXtD15Nl8g3BX3m4NKHQh0=; b=KX2uvR1yYFGMln4H+O3VuZyFA8BM0rUYCplNorT8hCqSIbPKLVi0dURDTJpGZU4W7uXftG qovEJJdKEfsPCSrE8i7ZkrzXfJp94npMskROTsYjoExwYIxwVz8wi5mEMxfcU2zVREfcQI oFRpz+yBdUqsoHO/+OdAZtL1rSkyQ14= From: Michael Walle To: Catalin Marinas , Sudeep Holla , Lorenzo Pieralisi , Daniel Lezcano , "Rafael J . Wysocki" , Will Deacon Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Michael Walle Subject: [PATCH 0/2] arm64: remove generic ARM cpuidle support Date: Sun, 29 May 2022 20:13:27 +0200 Message-Id: <20220529181329.2345722-1-michael@walle.cc> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220529_111347_495145_7FEC8C01 X-CRM114-Status: UNSURE ( 9.58 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Playing with an own PSCI implementation, I've noticed that the cpuidle-arm driver doesn't work on arm64. It doesn't probe because since commit 788961462f34 ("ARM: psci: cpuidle: Enable PSCI CPUidle driver") the arm_cpuidle_init() can only return -EOPNOTSUPP, because the commit removed the cpu_idle_init and cpu_suspend ops. It left me puzzled for quite some time. It seems that the cpuidle-psci is the preferred one and this has been the case for quite some time. The mentioned commit first appeared in v5.4. Remove the ARM64 support for the cpuidle-arm driver, which then let us remove all the supporting arch code. Michael Walle (2): cpuidle: cpuidle-arm: remove arm64 support arm64: cpuidle: remove generic cpuidle support arch/arm64/include/asm/cpu_ops.h | 9 --------- arch/arm64/include/asm/cpuidle.h | 15 --------------- arch/arm64/kernel/cpuidle.c | 29 ----------------------------- drivers/cpuidle/Kconfig.arm | 3 ++- 4 files changed, 2 insertions(+), 54 deletions(-) Acked-by: Daniel Lezcano