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[87.92.245.163]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6541209cd87sm1963901a12.35.2026.01.15.01.42.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 Jan 2026 01:42:31 -0800 (PST) Message-ID: <22a3ab11-9151-41cf-a0f2-8509abbd3d27@oss.qualcomm.com> Date: Thu, 15 Jan 2026 11:42:29 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 5/8] drm/msm/dp: Drop EV_USER_NOTIFICATION To: Konrad Dybcio , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Kuogee Hsieh Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Jessica Zhang References: <20260115-hpd-refactor-v3-0-08e2f3bcd2e0@oss.qualcomm.com> <20260115-hpd-refactor-v3-5-08e2f3bcd2e0@oss.qualcomm.com> <17990836-4278-4c5b-afa4-eb631930ba2a@oss.qualcomm.com> Content-Language: en-US From: Dmitry Baryshkov In-Reply-To: <17990836-4278-4c5b-afa4-eb631930ba2a@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: IGqpJshmd-wqnaWYvt7J5LnCHDPu2pjO X-Proofpoint-ORIG-GUID: IGqpJshmd-wqnaWYvt7J5LnCHDPu2pjO X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTE1MDA2OCBTYWx0ZWRfX32IxB5Q9Mqd9 YXszD000jWYd/Fc3ERJpAHzZAn8iuiP1ZQszKZgpiKBYmAA5elwB8TAVvJo5gEipqDvmlzQPrNI 74j0Sz3GsAYKWs7K26BQU0XymqBo9lM5bivwj8Ap8GgYytg9uR/y0fDJ3emRShxFyynqt/P1+4r zVpvl+Pae0k7teYpxMXBTtdF3rFVY11r930oxvaHX1qLIz0jkKEQuEn3X2BtySaxlehETl0ElJ6 zc0YA+ftyi2bL91E4S4rSNh34Mv3fZkJRECxARRXIMLPogdh0UwnioCRzOQN6OSKzLmNTYmMSkd IoJNfRaoPvEv8S5GrmGV91l38EaPfldrQ1sF9NJQkd92a3BaYFuNXk+e8PalHcr6rwP2rqf4Pdh 6F7yJY26CsQLNZYfotGOwE6g+iiqi/jwhs9xxCJ1GqF7pW2R0vvMOWrvAPpsiwvKBeDre1jXG5u PKzNUI/REqwqh98XxAg== X-Authority-Analysis: v=2.4 cv=fsHRpV4f c=1 sm=1 tr=0 ts=6968b689 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=+WgfKLcscl3VAWRHYO56eA==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=3lO4ytp0PBcW_CA4VZMA:9 a=QEXdDO2ut3YA:10 a=zgiPjhLxNE0A:10 a=NFOGd7dJGGMPyQGDc5-O:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2026-01-15_03,2026-01-14_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 priorityscore=1501 bulkscore=0 adultscore=0 spamscore=0 clxscore=1015 impostorscore=0 phishscore=0 lowpriorityscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601150068 On 15/01/2026 11:41, Konrad Dybcio wrote: > On 1/15/26 8:29 AM, Dmitry Baryshkov wrote: >> From: Jessica Zhang >> >> Currently, we queue an event for signalling HPD connect/disconnect. This >> can mean a delay in plug/unplug handling and notifying DRM core when a >> hotplug happens. >> >> Drop EV_USER_NOTIFICATION and signal the IRQ event as part of hotplug >> handling. > > IIUC, the drm_helper_hpd_irq_event() -> drm_bridge_hpd_notify() change > also prevents us from checking *all* connectors if we get *any* HPD? _unnecessarily_ checking all connectors if we know that HPD was here. -- With best wishes Dmitry