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DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Mar 2023 12:17:08.2080 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d52c7ab0-e696-4a06-6657-08db1fcf099a X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT026.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY5PR12MB6226 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: Guchun Chen Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Some amd asics having reliable hotplug support don't call drm_kms_helper_poll_init in driver init sequence. However, due to the unified suspend/resume path for all asics, because the output_poll_work->func is not set for these asics, a warning arrives when suspending. [ 90.656049] [ 90.656050] ? console_unlock+0x4d/0x100 [ 90.656053] ? __irq_work_queue_local+0x27/0x60 [ 90.656056] ? irq_work_queue+0x2b/0x50 [ 90.656057] ? __wake_up_klogd+0x40/0x60 [ 90.656059] __cancel_work_timer+0xed/0x180 [ 90.656061] drm_kms_helper_poll_disable.cold+0x1f/0x2c [drm_kms_helper] [ 90.656072] amdgpu_device_suspend+0x81/0x170 [amdgpu] [ 90.656180] amdgpu_pmops_runtime_suspend+0xb5/0x1b0 [amdgpu] [ 90.656269] pci_pm_runtime_suspend+0x61/0x1b0 So add use_kms_poll flag as the initialization check in amdgpu code before calling drm_kms_helper_poll_disable/drm_kms_helper_poll_enable in suspend/resume path. Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2411 Fixes: a4e771729a51("drm/probe_helper: sort out poll_running vs poll_enabled") Reported-by: Bert Karwatzki Suggested-by: Dmitry Baryshkov Signed-off-by: Guchun Chen --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 6 ++++-- drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c | 1 + drivers/gpu/drm/amd/amdgpu/dce_v10_0.c | 1 + drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 1 + drivers/gpu/drm/amd/amdgpu/dce_v6_0.c | 1 + drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | 1 + 7 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index c4a4e2fe6681..74af0b8c0d08 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -4145,7 +4145,8 @@ int amdgpu_device_suspend(struct drm_device *dev, bool fbcon) if (amdgpu_acpi_smart_shift_update(dev, AMDGPU_SS_DEV_D3)) DRM_WARN("smart shift update failed\n"); - drm_kms_helper_poll_disable(dev); + if (adev->mode_info.use_kms_poll) + drm_kms_helper_poll_disable(dev); if (fbcon) drm_fb_helper_set_suspend_unlocked(adev_to_drm(adev)->fb_helper, true); @@ -4243,7 +4244,8 @@ int amdgpu_device_resume(struct drm_device *dev, bool fbcon) if (fbcon) drm_fb_helper_set_suspend_unlocked(adev_to_drm(adev)->fb_helper, false); - drm_kms_helper_poll_enable(dev); + if (adev->mode_info.use_kms_poll) + drm_kms_helper_poll_enable(dev); amdgpu_ras_resume(adev); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h index 32fe05c810c6..d383ea3e8e94 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h @@ -343,6 +343,7 @@ struct amdgpu_mode_info { int disp_priority; const struct amdgpu_display_funcs *funcs; const enum drm_plane_type *plane_type; + bool use_kms_poll; }; #define AMDGPU_MAX_BL_LEVEL 0xFF diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c index 53ff91fc6cf6..3277799a80bb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c @@ -518,6 +518,7 @@ static int amdgpu_vkms_sw_init(void *handle) return r; drm_kms_helper_poll_init(adev_to_drm(adev)); + adev->mode_info.use_kms_poll = true; adev->mode_info.mode_config_initialized = true; return 0; diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c index 9a24ed463abd..f4d0a7cf588b 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c @@ -2842,6 +2842,7 @@ static int dce_v10_0_sw_init(void *handle) amdgpu_display_hotplug_work_func); drm_kms_helper_poll_init(adev_to_drm(adev)); + adev->mode_info.use_kms_poll = true; adev->mode_info.mode_config_initialized = true; return 0; diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c index c14b70350a51..25d0a866ca28 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c @@ -2961,6 +2961,7 @@ static int dce_v11_0_sw_init(void *handle) amdgpu_display_hotplug_work_func); drm_kms_helper_poll_init(adev_to_drm(adev)); + adev->mode_info.use_kms_poll = true; adev->mode_info.mode_config_initialized = true; return 0; diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c index 7f85ba5b726f..3936c6bfe2e3 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c @@ -2720,6 +2720,7 @@ static int dce_v6_0_sw_init(void *handle) amdgpu_display_hotplug_work_func); drm_kms_helper_poll_init(adev_to_drm(adev)); + adev->mode_info.use_kms_poll = true; return r; } diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c index d421a268c9ff..29fb837f5ebf 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c @@ -2744,6 +2744,7 @@ static int dce_v8_0_sw_init(void *handle) amdgpu_display_hotplug_work_func); drm_kms_helper_poll_init(adev_to_drm(adev)); + adev->mode_info.use_kms_poll = true; adev->mode_info.mode_config_initialized = true; return 0; From patchwork Wed Mar 8 12:17:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Chen, Guchun" X-Patchwork-Id: 13165633 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 C179AC64EC4 for ; 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Wed, 8 Mar 2023 06:17:31 -0600 From: Guchun Chen To: , , , , , Subject: [PATCH 2/2] drm/probe_helper: warning on poll_enabled for issue catching Date: Wed, 8 Mar 2023 20:17:18 +0800 Message-ID: <20230308121718.2586933-1-guchun.chen@amd.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF000108E8:EE_|SN7PR12MB6765:EE_ X-MS-Office365-Filtering-Correlation-Id: 791432a2-d3bc-4b9f-c5a1-08db1fcf18db X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230025)(4636009)(39860400002)(136003)(346002)(376002)(396003)(451199018)(36840700001)(40470700004)(46966006)(356005)(26005)(186003)(70206006)(70586007)(6666004)(44832011)(82310400005)(1076003)(8676002)(16526019)(8936002)(4326008)(40480700001)(966005)(2616005)(86362001)(336012)(316002)(83380400001)(7696005)(5660300002)(40460700003)(426003)(478600001)(47076005)(36756003)(2906002)(110136005)(36860700001)(81166007)(4744005)(41300700001)(82740400003)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Mar 2023 12:17:33.8335 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 791432a2-d3bc-4b9f-c5a1-08db1fcf18db X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF000108E8.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB6765 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: Guchun Chen Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" In order to catch issues in other drivers to ensure proper call sequence of polling function. Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2411 Fixes: a4e771729a51("drm/probe_helper: sort out poll_running vs poll_enabled") Reported-by: Bert Karwatzki Suggested-by: Dmitry Baryshkov Signed-off-by: Guchun Chen --- drivers/gpu/drm/drm_probe_helper.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index 8127be134c39..85e0e80d4a52 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -852,6 +852,8 @@ EXPORT_SYMBOL(drm_kms_helper_is_poll_worker); */ void drm_kms_helper_poll_disable(struct drm_device *dev) { + WARN_ON(!dev->mode_config.poll_enabled); + if (dev->mode_config.poll_running) drm_kms_helper_disable_hpd(dev);