From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from out2-smtp.messagingengine.com ([66.111.4.26]:52872 "EHLO out2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751407AbdAFNnl (ORCPT ); Fri, 6 Jan 2017 08:43:41 -0500 Subject: FAILED: patch "[PATCH] drm/amd/powerplay: Fix potential NULL pointer issue" failed to apply to 4.9-stable tree To: Xiangliang.Yu@amd.com, Rex.Zhu@amd.com, alexander.deucher@amd.com, christian.koenig@amd.com Cc: From: Date: Fri, 06 Jan 2017 14:43:40 +0100 Message-ID: <1483710220239199@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >>From e9efaaa047b1aebda27b5b65f17c752eb079e51b Mon Sep 17 00:00:00 2001 From: Xiangliang Yu Date: Wed, 30 Nov 2016 14:07:16 +0800 Subject: [PATCH] drm/amd/powerplay: Fix potential NULL pointer issue MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If doesn't enable dpm, the powerplay will not allocate memory for hw management. So, hw_init_power_state_table function will reference NULL pointer when resetting. Signed-off-by: Xiangliang Yu Reviewed-by: Rex Zhu Reviewed-by: Alex Deucher Acked-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c index 51a36077b993..c81cf1412728 100644 --- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c +++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c @@ -1004,12 +1004,12 @@ int amd_powerplay_reset(void *handle) if (ret) return ret; - hw_init_power_state_table(instance->hwmgr); - if ((amdgpu_dpm == 0) || cgs_is_virtualization_enabled(instance->smu_mgr->device)) return 0; + hw_init_power_state_table(instance->hwmgr); + if (eventmgr == NULL || eventmgr->pp_eventmgr_init == NULL) return -EINVAL;