From patchwork Mon Jun 6 17:55:39 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuogee Hsieh X-Patchwork-Id: 12870735 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0F724C433EF for ; Mon, 6 Jun 2022 17:55:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229700AbiFFRzx (ORCPT ); Mon, 6 Jun 2022 13:55:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40168 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229452AbiFFRzw (ORCPT ); Mon, 6 Jun 2022 13:55:52 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B5E82F9AD9; Mon, 6 Jun 2022 10:55:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1654538151; x=1686074151; h=from:to:cc:subject:date:message-id:mime-version; bh=nA3VMIc0EdXLtq38zIS6zslzeXYlwNxm4o2TKajA+5E=; b=aB8f/Hnkgq8hYIVzjcTOYMszJsB1KWRG9RNUjETlqJ5rrmQs5FiUJh+9 jP6YGLM07uGvILaRQsmYpMsl2HSMWUqanH6W5TlkD8NxBDeinrYmqxscS 01rDhYl0kLH+KwVOpvOxHR13rbwL71SlXhPpDFgzZgyITeGDRfzDiDwk0 E=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 06 Jun 2022 10:55:51 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg09-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jun 2022 10:55:50 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Mon, 6 Jun 2022 10:55:49 -0700 Received: from khsieh-linux1.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Mon, 6 Jun 2022 10:55:49 -0700 From: Kuogee Hsieh To: , , , , , , , , , CC: , , , , , , , Subject: [PATCH v2] drm/msm/dp: check core_initialized before disable interrupts at dp_display_unbind() Date: Mon, 6 Jun 2022 10:55:39 -0700 Message-ID: <1654538139-7450-1-git-send-email-quic_khsieh@quicinc.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org During msm initialize phase, dp_display_unbind() will be called to undo initializations had been done by dp_display_bind() previously if there is error happen at msm_drm_bind. In this case, core_initialized flag had to be check to make sure clocks is on before update DP controller register to disable HPD interrupts. Otherwise system will crash due to below NOC fatal error. QTISECLIB [01f01a7ad]CNOC2 ERROR: ERRLOG0_LOW = 0x00061007 QTISECLIB [01f01a7ad]GEM_NOC ERROR: ERRLOG0_LOW = 0x00001007 QTISECLIB [01f0371a0]CNOC2 ERROR: ERRLOG0_HIGH = 0x00000003 QTISECLIB [01f055297]GEM_NOC ERROR: ERRLOG0_HIGH = 0x00000003 QTISECLIB [01f072beb]CNOC2 ERROR: ERRLOG1_LOW = 0x00000024 QTISECLIB [01f0914b8]GEM_NOC ERROR: ERRLOG1_LOW = 0x00000042 QTISECLIB [01f0ae639]CNOC2 ERROR: ERRLOG1_HIGH = 0x00004002 QTISECLIB [01f0cc73f]GEM_NOC ERROR: ERRLOG1_HIGH = 0x00004002 QTISECLIB [01f0ea092]CNOC2 ERROR: ERRLOG2_LOW = 0x0009020c QTISECLIB [01f10895f]GEM_NOC ERROR: ERRLOG2_LOW = 0x0ae9020c QTISECLIB [01f125ae1]CNOC2 ERROR: ERRLOG2_HIGH = 0x00000000 QTISECLIB [01f143be7]GEM_NOC ERROR: ERRLOG2_HIGH = 0x00000000 QTISECLIB [01f16153a]CNOC2 ERROR: ERRLOG3_LOW = 0x00000000 QTISECLIB [01f17fe07]GEM_NOC ERROR: ERRLOG3_LOW = 0x00000000 QTISECLIB [01f19cf89]CNOC2 ERROR: ERRLOG3_HIGH = 0x00000000 QTISECLIB [01f1bb08e]GEM_NOC ERROR: ERRLOG3_HIGH = 0x00000000 QTISECLIB [01f1d8a31]CNOC2 ERROR: SBM1 FAULTINSTATUS0_LOW = 0x00000002 QTISECLIB [01f1f72a4]GEM_NOC ERROR: SBM0 FAULTINSTATUS0_LOW = 0x00000001 QTISECLIB [01f21a217]CNOC3 ERROR: ERRLOG0_LOW = 0x00000006 QTISECLIB [01f23dfd3]NOC error fatal changes in v2: -- drop the first patch (drm/msm: enable msm irq after all initializations are done successfully at msm_drm_init()) since the problem had been fixed by other patch Fixes: a65c95ff88f2 ("drm/msm/dp: stop event kernel thread when DP unbind") Signed-off-by: Kuogee Hsieh Reviewed-by: Stephen Boyd --- drivers/gpu/drm/msm/dp/dp_display.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index da5c03a..2b72639 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -309,7 +309,8 @@ static void dp_display_unbind(struct device *dev, struct device *master, struct msm_drm_private *priv = dev_get_drvdata(master); /* disable all HPD interrupts */ - dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_INT_MASK, false); + if (dp->core_initialized) + dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_INT_MASK, false); kthread_stop(dp->ev_tsk);