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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=ham 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 20264C282C4 for ; Sat, 9 Feb 2019 18:55:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D4B2720643 for ; Sat, 9 Feb 2019 18:55:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549738523; bh=iIXzYjkzx8FW4knIQH0cq7xv08zI5qckJhdYfOn+pBk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=sXUQMozQhvR8OGECvHRZLOv2JMiytqUTfFY09BSM4G6kREDOhC5QkPJixIMEhhr2P 3j2w14QzxtWXfpem9jAgrU6yoDEuaN4CY/bkBsYzgFKN1THTkgLwl+LXH4aKYBHT9q sAqr2OWmSqrkVVKFSZ9RPFV7PBr0d1j3evYWsm+s= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727738AbfBISse (ORCPT ); Sat, 9 Feb 2019 13:48:34 -0500 Received: from mail.kernel.org ([198.145.29.99]:33434 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727678AbfBISsa (ORCPT ); Sat, 9 Feb 2019 13:48:30 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 360AF21919; Sat, 9 Feb 2019 18:48:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549738110; bh=iIXzYjkzx8FW4knIQH0cq7xv08zI5qckJhdYfOn+pBk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AUKESnOryzv6U33nWxx90fKCnBIlJu1cyq7uP3x6F7atVy2iJsfkcM3QWmOM48y2c 0jhePhQWkCmWslC1+d0rEqYFchBHmVsTWWpwAgzVhYf2bixZs7A9AAtGRYeqp0t8A4 t/Fpov1vLNceMb6M3Xqbx7mFSCzTG2FhPcz1jZQE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ilia Mirkin , Ben Skeggs , Sasha Levin , dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org Subject: [PATCH AUTOSEL 4.20 37/42] drm/nouveau/falcon: avoid touching registers if engine is off Date: Sat, 9 Feb 2019 13:47:29 -0500 Message-Id: <20190209184734.125935-37-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190209184734.125935-1-sashal@kernel.org> References: <20190209184734.125935-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ilia Mirkin [ Upstream commit a5176a4cb85bb6213daadf691097cf411da35df2 ] Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108980 Signed-off-by: Ilia Mirkin Signed-off-by: Ben Skeggs Signed-off-by: Sasha Levin --- drivers/gpu/drm/nouveau/nvkm/engine/falcon.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c b/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c index 816ccaedfc73..8675613e142b 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c @@ -22,6 +22,7 @@ #include #include +#include #include #include @@ -107,8 +108,10 @@ nvkm_falcon_fini(struct nvkm_engine *engine, bool suspend) } } - nvkm_mask(device, base + 0x048, 0x00000003, 0x00000000); - nvkm_wr32(device, base + 0x014, 0xffffffff); + if (nvkm_mc_enabled(device, engine->subdev.index)) { + nvkm_mask(device, base + 0x048, 0x00000003, 0x00000000); + nvkm_wr32(device, base + 0x014, 0xffffffff); + } return 0; } -- 2.19.1