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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b879513e8d1sm1757410966b.2.2026.01.22.06.53.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 22 Jan 2026 06:53:24 -0800 (PST) Message-ID: Date: Thu, 22 Jan 2026 15:53:23 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 5/6] phy: qcom: qmp-usb-legacy: Prevent unnecessary PM runtime suspend at boot To: Loic Poulain , vkoul@kernel.org, kishon@kernel.org Cc: linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, dmitry.baryshkov@oss.qualcomm.com, neil.armstrong@linaro.org References: <20260121142827.2583-1-loic.poulain@oss.qualcomm.com> <20260121142827.2583-6-loic.poulain@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260121142827.2583-6-loic.poulain@oss.qualcomm.com> X-Authority-Analysis: v=2.4 cv=HOHO14tv c=1 sm=1 tr=0 ts=697239e6 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=vtxEUVkT7waMBiOsAPUA:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-ORIG-GUID: l_lK3aMSe-6xGAWU_0MN3eCUUK16iyqt X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTIyMDExMyBTYWx0ZWRfXzRsYhB5h920N repE+OH0OjNbD5OCZXekL1YDkXswtLhPCRzjF8iEEvFMRd0PJ+oV18WFyiPf9WbS06vo3bcS+aH UodA0UWOR/Z6UHVHhL/KJVC51DyEZSUmCQA1iJ5VVo49Qhrw1IwzPAIt0EQm+bthUxk7RBp/ceB 1s8NJsMMFanGrQSGN8xN8k1oR+5Wlem5XD5WAoL5e2dIPsfsh9zGZ7MdHOZb7VBYsH9TpkhriRw Wyx0/X16mQa+lTi/ahBGnjy/21DPFFpPCb0ajC92y/xL+MOzJHcwfg6CCqd6jaK9h7BxtT66ehw L4mjGnAuALPFIIbin8tjbYRRjBGvpYiJZY230Hu/9IkKBha2tCB9tSet3MwB+nyM0NByiwfMkBK oPVJEPWRpoLHc4lYA+SZIQu9F9RtgR6EO97vOT7Qzit0jfYfOWd6/mOrjdjpOjJCkmie9G6LMcf Qrv1EmJi6D82pbfYN0Q== X-Proofpoint-GUID: l_lK3aMSe-6xGAWU_0MN3eCUUK16iyqt X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.20,FMLib:17.12.100.49 definitions=2026-01-22_02,2026-01-22_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 phishscore=0 adultscore=0 impostorscore=0 malwarescore=0 spamscore=0 bulkscore=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2601220113 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260122_065328_079952_E38BEA5F X-CRM114-Status: UNSURE ( 9.59 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On 1/21/26 3:28 PM, Loic Poulain wrote: > There is a small window where the device can suspend after > pm_runtime_enable() and before pm_runtime_forbid(), causing an > unnecessary suspend/resume cycle while the PHY is not yet registered. > > Move pm_runtime_forbid() before pm_runtime_enable() to eliminate > this race. > > Signed-off-by: Loic Poulain > --- Reviewed-by: Konrad Dybcio Konrad -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy