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Sun, 26 Apr 2026 23:39:27 -0700 (PDT) Received: from hu-tdas-hyd.qualcomm.com ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-361410a7ab7sm38628234a91.10.2026.04.26.23.39.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Apr 2026 23:39:27 -0700 (PDT) From: Taniya Das Date: Mon, 27 Apr 2026 12:08:57 +0530 Subject: [PATCH v2 3/6] clk: qcom: common: ensure runtime PM suspend completes on probe Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20260427-gfx-clk-fixes-v2-3-797e54b3d464@oss.qualcomm.com> References: <20260427-gfx-clk-fixes-v2-0-797e54b3d464@oss.qualcomm.com> In-Reply-To: <20260427-gfx-clk-fixes-v2-0-797e54b3d464@oss.qualcomm.com> To: Bjorn Andersson , Michael Turquette , Stephen Boyd , Konrad Dybcio , Abel Vesa , Rob Clark , Sean Paul , Konrad Dybcio , Akhil P Oommen , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Marijn Suijten , David Airlie , Simona Vetter Cc: Ajit Pandey , Imran Shaik , Jagadeesh Kona , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, Taniya Das X-Mailer: b4 0.15-dev-aa3f6 X-Proofpoint-GUID: R2P_qCZOmEmsLpqtPFa8zZGjyNW3PoHW X-Proofpoint-ORIG-GUID: R2P_qCZOmEmsLpqtPFa8zZGjyNW3PoHW X-Authority-Analysis: v=2.4 cv=Y+fIdBeN c=1 sm=1 tr=0 ts=69ef04a1 cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=EUspDBNiAAAA:8 a=b5psBqh-k-Y8K5vD8YMA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDI3MDA2OCBTYWx0ZWRfX7iRokYnc3jHd 9tcsCVS1pfZ7+pCiYTZAAZo+myCFLJvnzqKCTfs1YstEyLOjcWHqZF/GZpvdnU+mNlknDpH1eCd ux6uWK1CvYtVNDZJedAfxwp1jCreIcuYr5/5DITLqgeua76oInLn7w3bdIZRT02oUmBE8gTdSnX 9PH3IfFPN9XobrDCO3ZVkD0jeaEvmkkBy7/CUprE6iXcVz4G8ZUSwoJvaGR8Vo4dW88OrCOfi8w 8YSe3OJmlvgY8zyRk8l1Pyjd2SUJvSR1749KS8ki4kg00KOMN07gz6/eFgzMnVWiMAMQEl3WFaU 16qy7+C7DXSDBbn/HVx29hob6NO1hxLO9seppzgX75sbnllWyi0XPvad2uLb7vxSLvvt6AVK7ya Kd9/FmqgCFJpyCaLkOfKIstd+sBzgyrEfb5KZQ+hE17DuDt+5wyP1AO3vzJ1ZS4whcaRr0hLNoc 9497Ol0VZmFKO9rlNTg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-27_01,2026-04-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 suspectscore=0 phishscore=0 adultscore=0 priorityscore=1501 malwarescore=0 impostorscore=0 bulkscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2604270068 When the clock controller is probed with 'use_rpm' enabled, the runtime PM reference is currently released using pm_runtime_put(), which may return before the runtime suspend has completed. When the clock controller device is registered through this function, calling pm_runtime_disable() immediately after pm_runtime_put() prevents the runtime suspend from completing, leaving the clock controller active and the HW rails in the ON state. Use pm_runtime_put_sync() instead to ensure the runtime PM “putV completes synchronously during probe. This does not have any functional impact, but it guarantees that the device is fully runtime-suspended before returning. Signed-off-by: Taniya Das --- drivers/clk/qcom/common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/qcom/common.c b/drivers/clk/qcom/common.c index eec369d2173b5ce24bc1ca860d2ac1bbdce04524..2c09abaf1d2a15b7fbbbfeb67c03075381185a00 100644 --- a/drivers/clk/qcom/common.c +++ b/drivers/clk/qcom/common.c @@ -428,7 +428,7 @@ int qcom_cc_really_probe(struct device *dev, put_rpm: if (desc->use_rpm) - pm_runtime_put(dev); + pm_runtime_put_sync(dev); return ret; } -- 2.34.1