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[67.168.198.145]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2eb392aa7bcsm44746595ad.67.2026.11.03.10.47.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Nov 2026 10:47:44 -0800 (PST) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, Anna Maniscalco , Rob Clark , Alexander Koskovich , Konrad Dybcio , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , linux-kernel@vger.kernel.org (open list) Subject: [PATCH v3 4/4] drm/msm: Inhibit IFPC for state snapshot Date: Tue, 3 Nov 2026 10:47:10 -0800 Message-ID: <20261103184713.29664-5-robin.clark@oss.qualcomm.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261103184713.29664-1-robin.clark@oss.qualcomm.com> References: <20261103184713.29664-1-robin.clark@oss.qualcomm.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Info: AW1haW4tMjYxMTAzMDA3NCBTYWx0ZWRfX/tiOsGG8stpg pU1F9vIl4yoG6tdi7Zh84GpSFHFw2TaU+Ah1RcQLScn0SCkH/m7iBon5g0DHkNj1X2EZW08o80O spGFQIcHf5SQSmUyYVmzgBNrhQnG/gs= X-Authority-Analysis: v=2.4 cv=JeUpPkKV c=1 sm=1 tr=0 ts=6aea2c51 cx=c_pps a=cmESyDAEBpBGqyK7t0alAg==:117 a=6Rn/7xRx7Ub4NEhlm8k1cw==:17 a=zJRp6_cAMcgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=EUspDBNiAAAA:8 a=pGLkceISAAAA:8 a=jgQnFmZX3A3noQDnNKkA:9 a=1OuFwYUASf3TG4hYMiVC:22 X-Proofpoint-GUID: urZU1zdW5PzVjTf8mu1Uf8dHqwqv9a2o X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTAzMDA3NCBTYWx0ZWRfX23DZMWt3nfx6 U1nVsBanPqcAFCjZYh4dZRz7T/vnhXMVSt2+UntAkryFOwGUTTO7PYtGlR8oHfpZGGjaJQLCXNA E48Jfp+136dREUhiGG9qokuJyUo6DhChj+tXVIpg/ltSjshCyGrY5SANfJqz7WMQWeS9ljfs7R4 yUvTlzuPL8h8vnyFBJmgrdZPXqzHZvCWcQ+tCwzolnm2yNO7BrfAPjSHEHXABJlaoPtJ783YYAp q1L3CImPNeyRlkQwdj5DLd+thWJNDs6uEgBQbpSHRfvoAJv9oCTtbq363dKzH30YnDUI+m0v+xm ukabpkGM0h8XImGQLS1qRMkHEIPW/Md/rdajqjEN9RAKYZ7t39kG1FWfF+9X6VWiiiZ4KPflOXU jofNvmU6FbyyjtdgiuLBuslvAnwdxxdTGcm53bh+Ua5aiqFXFTlKNLUlkFjn2av8q33kOqoCt1k 3S5QFZAMpYZZc9rNmww== X-Proofpoint-ORIG-GUID: urZU1zdW5PzVjTf8mu1Uf8dHqwqv9a2o X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-03_04,2026-11-03_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 clxscore=1015 suspectscore=0 priorityscore=1501 bulkscore=0 spamscore=0 adultscore=0 lowpriorityscore=0 phishscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610300000 definitions=main-2611030074 We need the GPU to stay awake for this. Tested-by: Alexander Koskovich # Milos (Nothing Phone 3a) Reviewed-by: Konrad Dybcio Reviewed-by: Anna Maniscalco Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_debugfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_debugfs.c b/drivers/gpu/drm/msm/msm_debugfs.c index aa59b28a3392..29209c23fcfa 100644 --- a/drivers/gpu/drm/msm/msm_debugfs.c +++ b/drivers/gpu/drm/msm/msm_debugfs.c @@ -81,6 +81,8 @@ static int msm_gpu_open(struct inode *inode, struct file *file) return -ENOMEM; scoped_guard (pm_runtime_active, &gpu->pdev->dev) { + guard(ifpc_disable)(gpu); + scoped_cond_guard (mutex_intr, return -EINTR, &gpu->lock) { msm_gpu_hw_init(gpu); show_priv->state = gpu->funcs->gpu_state_get(gpu); -- 2.56.0