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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-382eb7b464fsm58436331fa.20.2026.01.15.01.41.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 Jan 2026 01:41:28 -0800 (PST) Message-ID: <17990836-4278-4c5b-afa4-eb631930ba2a@oss.qualcomm.com> Date: Thu, 15 Jan 2026 10:41:25 +0100 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: Dmitry Baryshkov , 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> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260115-hpd-refactor-v3-5-08e2f3bcd2e0@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTE1MDA2NiBTYWx0ZWRfX29Ymo6O4H6xT 1w8vAJJf2gSklj7N+XoYLLQWBDTB//4fyfmMxuP6PyDIhKrk7VYVLM2RiKUa2KXV8VYvisehZSC bhq7Nyak8StUddkYM1jPTW4bRGos3FneusXVZQW32S44jTFH9hCxhtSG+I1508o+NkFCqHXcs/t +gq0miiEZfpfm5t88fC7YN/zUvOQ/dg+Bos8aqN2bHtOImFTuo47EOoMFpFRTTozJNJWIY11f8n waV6oW3KgirCJAVpjAYgGcXqQTiOuzKytXA5voA+scZzqPfI9QGg6IpH5PvKjc/gJ37KQ2g/FiE KJuJIWUkbbM/oGZx6NBNJ+mHrFpFGUGETHexjSQdssp3ap8q/NYGhAoz4LvYv+FaYnzg4cnJnVl +Rr5eDO7EUeonGUNRL2poIcwGWa5+BzfdyjwYT3v2Jt7TiCH4bIEVSxwtbrivErD/s/8/lp2sbs bUU770Nvom1CSTaO2cQ== X-Proofpoint-ORIG-GUID: jwwMXDZZ-Cor82G8WLSYeLiwiIdvQmZi X-Proofpoint-GUID: jwwMXDZZ-Cor82G8WLSYeLiwiIdvQmZi X-Authority-Analysis: v=2.4 cv=aapsXBot c=1 sm=1 tr=0 ts=6968b64c cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=ls25Rwon0kCaizU-UYAA: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 spamscore=0 malwarescore=0 clxscore=1015 priorityscore=1501 lowpriorityscore=0 impostorscore=0 bulkscore=0 phishscore=0 adultscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601150066 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? Konrad