From patchwork Fri Dec 1 01:07:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paloma Arellano X-Patchwork-Id: 749883 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="iJ/EpFvc" Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 109D0B6 for ; Thu, 30 Nov 2023 17:09:04 -0800 (PST) Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3AUN7akT017185; Fri, 1 Dec 2023 01:08:20 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=qcppdkim1; bh=1Qphx6EBOdkvkyIMjEOJQkzV3uQ7oiDj85+npScU12E=; b=iJ/EpFvcadeAPNWFS010DpQqi19KLET+eJbzO8RCDdPIqSeTJqv1HfI7xSOAdRaoWwoZ M8kNptch9tvEAwmdNi6gQnUMg3ukDrfD9kn/9UndzrAnrnDEIIt+v/A56rsOYy99W+4Q 88+H6VBu6cBGTRDVyyQhghYJkoKcITX9Udm/13H59QBcGxkAYmyKGc2k93x4QVoKJQ6i pS2jsTyXlbEcA8od6tLC61v4sDfznPasHy0Ucs02BwTOLFtI7ZtAMFo12e5ABu5rUwA1 pgQ3E7jjlCDvleuc/Ev/hgCf7GemdBkzWaPkGFv4WcF684DYMch/dXbZqCvyyhilTlCP 8A== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3upw12scs8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 01 Dec 2023 01:08:20 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3B118J2U014751 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 1 Dec 2023 01:08:19 GMT Received: from hu-parellan-lv.qualcomm.com (10.49.16.6) 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 15.2.1118.40; Thu, 30 Nov 2023 17:08:19 -0800 From: Paloma Arellano To: CC: Paloma Arellano , , , , , , , , , , Subject: [PATCH 1/2] drm/msm/dpu: Modify vblank_refcount if error in callback Date: Thu, 30 Nov 2023 17:07:53 -0800 Message-ID: <20231201010758.1703-2-quic_parellan@quicinc.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231201010758.1703-1-quic_parellan@quicinc.com> References: <20231201010758.1703-1-quic_parellan@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: _i9-sK6nuW3MPR2Vco_v_8SluWkpkwCs X-Proofpoint-ORIG-GUID: _i9-sK6nuW3MPR2Vco_v_8SluWkpkwCs X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-30_25,2023-11-30_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 bulkscore=0 malwarescore=0 suspectscore=0 mlxlogscore=999 phishscore=0 priorityscore=1501 spamscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2312010006 When the irq callback returns a value other than zero, modify vblank_refcount by performing the inverse operation of its corresponding if-else condition. Signed-off-by: Paloma Arellano --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 9 +++++++-- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 9 +++++++-- 2 files changed, 14 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c index be185fe69793b..25babfe1f001a 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c @@ -260,14 +260,19 @@ static int dpu_encoder_phys_cmd_control_vblank_irq( phys_enc->hw_pp->idx - PINGPONG_0, enable ? "true" : "false", refcount); - if (enable && atomic_inc_return(&phys_enc->vblank_refcount) == 1) + if (enable && atomic_inc_return(&phys_enc->vblank_refcount) == 1) { ret = dpu_core_irq_register_callback(phys_enc->dpu_kms, phys_enc->irq[INTR_IDX_RDPTR], dpu_encoder_phys_cmd_te_rd_ptr_irq, phys_enc); - else if (!enable && atomic_dec_return(&phys_enc->vblank_refcount) == 0) + if (ret) + atomic_dec(&phys_enc->vblank_refcount); + } else if (!enable && atomic_dec_return(&phys_enc->vblank_refcount) == 0) { ret = dpu_core_irq_unregister_callback(phys_enc->dpu_kms, phys_enc->irq[INTR_IDX_RDPTR]); + if (ret) + atomic_inc(&phys_enc->vblank_refcount); + } end: if (ret) { diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c index a01fda7118835..8e905d7267f9f 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c @@ -379,14 +379,19 @@ static int dpu_encoder_phys_vid_control_vblank_irq( DRM_DEBUG_VBL("id:%u enable=%d/%d\n", DRMID(phys_enc->parent), enable, atomic_read(&phys_enc->vblank_refcount)); - if (enable && atomic_inc_return(&phys_enc->vblank_refcount) == 1) + if (enable && atomic_inc_return(&phys_enc->vblank_refcount) == 1) { ret = dpu_core_irq_register_callback(phys_enc->dpu_kms, phys_enc->irq[INTR_IDX_VSYNC], dpu_encoder_phys_vid_vblank_irq, phys_enc); - else if (!enable && atomic_dec_return(&phys_enc->vblank_refcount) == 0) + if (ret) + atomic_dec(&phys_enc->vblank_refcount); + } else if (!enable && atomic_dec_return(&phys_enc->vblank_refcount) == 0) { ret = dpu_core_irq_unregister_callback(phys_enc->dpu_kms, phys_enc->irq[INTR_IDX_VSYNC]); + if (ret) + atomic_inc(&phys_enc->vblank_refcount); + } end: if (ret) {