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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,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 3F76BC433E3 for ; Mon, 17 Aug 2020 18:14:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 27DD520738 for ; Mon, 17 Aug 2020 18:14:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597688086; bh=i8IA/7eMak21kEfbh371Ez3qa987IvxjDxAcvdOsJVc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=qicK+1tprVxCX8sNwB0zkm3wkaRQLYOzNTm0zOqOuvR8j7TSSCtggOFAsHlH8p3aC jfYhG+KH35QoTIcj5WlQ6ngBR9c2k9bOb8OCr/c/SGG2NppzBSOs1Tekkq9eseC2er DUEDQHUI9O1eqtchxvjruZS/H9a8jlCj/zslkmB8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390644AbgHQSOp (ORCPT ); Mon, 17 Aug 2020 14:14:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:53300 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388231AbgHQQG0 (ORCPT ); Mon, 17 Aug 2020 12:06:26 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AAD9520729; Mon, 17 Aug 2020 16:06:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597680376; bh=i8IA/7eMak21kEfbh371Ez3qa987IvxjDxAcvdOsJVc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gryMVdy4dWOB1MV19b0ijpmo3x5gFAwmcuB8isSqsvUSJ8WXzuoNcDp/4xzu306ue qbsZp8/Bkp98Zv9UxWP5/gzPgmKGitJotwdIfuovnBcMHQImq2e4HDx13TQHFvDNXE Kh6ZXK8Op/RGOIX2gNU3C4yHcLOhNSLT15Miw7f4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Marek Vasut , =?UTF-8?q?Yannick=20Fertr=C3=A9?= , Philippe Cornu , Benjamin Gaignard , Vincent Abriou , Maxime Coquelin , Alexandre Torgue , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Benjamin Gaignard , Sasha Levin Subject: [PATCH 5.4 132/270] drm/stm: repair runtime power management Date: Mon, 17 Aug 2020 17:15:33 +0200 Message-Id: <20200817143802.365269820@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143755.807583758@linuxfoundation.org> References: <20200817143755.807583758@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Marek Vasut [ Upstream commit ebd267b2e3c25d5f93a08528b47c036569eb8744 ] Add missing pm_runtime_get_sync() into ltdc_crtc_atomic_enable() to match pm_runtime_put_sync() in ltdc_crtc_atomic_disable(), otherwise the LTDC might suspend via runtime PM, disable clock, and then fail to resume later on. The test which triggers it is roughly -- run qt5 application which uses eglfs platform and etnaviv, stop the application, sleep for 15 minutes, run the application again. This leads to a timeout waiting for vsync, because the LTDC has suspended, but did not resume. Fixes: 35ab6cfbf211 ("drm/stm: support runtime power management") Signed-off-by: Marek Vasut Cc: Yannick Fertré Cc: Philippe Cornu Cc: Benjamin Gaignard Cc: Vincent Abriou Cc: Maxime Coquelin Cc: Alexandre Torgue To: dri-devel@lists.freedesktop.org Cc: linux-stm32@st-md-mailman.stormreply.com Cc: linux-arm-kernel@lists.infradead.org Acked-by: Philippe Cornu Tested-by: Yannick Fertre Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/20200229221649.90813-1-marex@denx.de Signed-off-by: Sasha Levin --- drivers/gpu/drm/stm/ltdc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index 3ab4fbf8eb0d1..51571f7246abf 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -424,9 +424,12 @@ static void ltdc_crtc_atomic_enable(struct drm_crtc *crtc, struct drm_crtc_state *old_state) { struct ltdc_device *ldev = crtc_to_ltdc(crtc); + struct drm_device *ddev = crtc->dev; DRM_DEBUG_DRIVER("\n"); + pm_runtime_get_sync(ddev->dev); + /* Sets the background color value */ reg_write(ldev->regs, LTDC_BCCR, BCCR_BCBLACK); -- 2.25.1 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 CE050C433E3 for ; Mon, 17 Aug 2020 16:07:45 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 946A822CB3 for ; Mon, 17 Aug 2020 16:07:45 +0000 (UTC) Authentication-Results: mail.kernel.org; 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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597680376; bh=i8IA/7eMak21kEfbh371Ez3qa987IvxjDxAcvdOsJVc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gryMVdy4dWOB1MV19b0ijpmo3x5gFAwmcuB8isSqsvUSJ8WXzuoNcDp/4xzu306ue qbsZp8/Bkp98Zv9UxWP5/gzPgmKGitJotwdIfuovnBcMHQImq2e4HDx13TQHFvDNXE Kh6ZXK8Op/RGOIX2gNU3C4yHcLOhNSLT15Miw7f4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH 5.4 132/270] drm/stm: repair runtime power management Date: Mon, 17 Aug 2020 17:15:33 +0200 Message-Id: <20200817143802.365269820@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143755.807583758@linuxfoundation.org> References: <20200817143755.807583758@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200817_120617_305681_C0F182F9 X-CRM114-Status: GOOD ( 15.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marek Vasut , Sasha Levin , Maxime Coquelin , Greg Kroah-Hartman , Philippe Cornu , stable@vger.kernel.org, =?UTF-8?q?Yannick=20Fertr=C3=A9?= , Benjamin Gaignard , Benjamin Gaignard , Vincent Abriou , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Alexandre Torgue Content-Type: text/plain; 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Mon, 17 Aug 2020 16:06:16 +0000 (UTC) Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AAD9520729; Mon, 17 Aug 2020 16:06:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597680376; bh=i8IA/7eMak21kEfbh371Ez3qa987IvxjDxAcvdOsJVc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gryMVdy4dWOB1MV19b0ijpmo3x5gFAwmcuB8isSqsvUSJ8WXzuoNcDp/4xzu306ue qbsZp8/Bkp98Zv9UxWP5/gzPgmKGitJotwdIfuovnBcMHQImq2e4HDx13TQHFvDNXE Kh6ZXK8Op/RGOIX2gNU3C4yHcLOhNSLT15Miw7f4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH 5.4 132/270] drm/stm: repair runtime power management Date: Mon, 17 Aug 2020 17:15:33 +0200 Message-Id: <20200817143802.365269820@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143755.807583758@linuxfoundation.org> References: <20200817143755.807583758@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marek Vasut , Sasha Levin , Maxime Coquelin , Greg Kroah-Hartman , Philippe Cornu , stable@vger.kernel.org, =?UTF-8?q?Yannick=20Fertr=C3=A9?= , Benjamin Gaignard , Vincent Abriou , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Alexandre Torgue Content-Type: text/plain; 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