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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 0CC6FC433DB for ; Mon, 22 Feb 2021 06:49:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C93A064EB4 for ; Mon, 22 Feb 2021 06:49:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229959AbhBVGt2 (ORCPT ); Mon, 22 Feb 2021 01:49:28 -0500 Received: from lucky1.263xmail.com ([211.157.147.132]:51380 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229518AbhBVGtZ (ORCPT ); Mon, 22 Feb 2021 01:49:25 -0500 Received: from localhost (unknown [192.168.167.32]) by lucky1.263xmail.com (Postfix) with ESMTP id 29657F0FFC; Mon, 22 Feb 2021 14:47:04 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-ADDR-CHECKED: 0 X-ANTISPAM-LEVEL: 2 X-ABS-CHECKED: 0 Received: from localhost.localdomain (unknown [124.126.19.250]) by smtp.263.net (postfix) whith ESMTP id P27943T140459827513088S1613976423851514_; Mon, 22 Feb 2021 14:47:03 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: <17e9c158043e3d51b4697a8f6a79f68d> X-RL-SENDER: wangjingyu@uniontech.com X-SENDER: wangjingyu@uniontech.com X-LOGIN-NAME: wangjingyu@uniontech.com X-FST-TO: alexander.deucher@amd.com X-SENDER-IP: 124.126.19.250 X-ATTACHMENT-NUM: 0 X-System-Flag: 0 From: wangjingyu To: alexander.deucher@amd.com, christian.koenig@amd.com, airlied@linux.ie Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, wangjingyu , zhuyong Subject: [PATCH] drm/radeon: A gray screen appears when going into hibernation(S4) Date: Mon, 22 Feb 2021 14:46:53 +0800 Message-Id: <20210222064653.22084-1-wangjingyu@uniontech.com> X-Mailer: git-send-email 2.11.0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Radeon Card: Caicos[Radeon HD 6450/7450/8450 /R5 230 OEM] there is no gray screen when echo 4>/sys/module/drm/parameters/debug, so the WREG32 function after DRM_DEBUG_KMS may have wrong when going into hibernation.the delay of msleep(50) just can fix gray screen. Signed-off-by: wangjingyu Signed-off-by: zhuyong --- drivers/gpu/drm/radeon/radeon_display.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index ddfe91efa61e..1f7f0904e4a5 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -215,6 +215,7 @@ void radeon_crtc_load_lut(struct drm_crtc *crtc) if (!crtc->enabled) return; + msleep(50); if (ASIC_IS_DCE5(rdev)) dce5_crtc_load_lut(crtc); else if (ASIC_IS_DCE4(rdev)) -- 2.11.0