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Tue, 11 Aug 2026 23:58:38 -0700 (PDT) X-Received: by 2002:a17:90b:28cf:b0:37f:bfa2:1887 with SMTP id 98e67ed59e1d1-393012af827mr3137220a91.8.1786517917524; Tue, 11 Aug 2026 23:58:37 -0700 (PDT) Received: from [10.217.219.92] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-392f94d30b9sm2391336a91.13.2026.08.11.23.58.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 11 Aug 2026 23:58:37 -0700 (PDT) Message-ID: <61eb40e1-1eae-45a3-af65-62eaaf27edc4@oss.qualcomm.com> Date: Wed, 12 Aug 2026 12:28:29 +0530 Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/7] pmdomain: arm: Fix -EINVAL from scmi_pd_set_perf_state() on state 0 To: Praveen Talari , konrad.dybcio@oss.qualcomm.com, Sudeep Holla , Cristian Marussi , Ulf Hansson , Bjorn Andersson , Konrad Dybcio , Greg Kroah-Hartman , Jiri Slaby , Mark Brown , Viken Dadhaniya , Andi Shyti Cc: chandana.chiluveru@oss.qualcomm.com, arm-scmi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, linux-spi@vger.kernel.org, linux-i2c@vger.kernel.org References: <20260805-derive_clk_perf_tbl_from_perf_domain_opp_table-v1-0-61171ab1cdce@oss.qualcomm.com> <20260805-derive_clk_perf_tbl_from_perf_domain_opp_table-v1-1-61171ab1cdce@oss.qualcomm.com> Content-Language: en-US From: Mukesh Savaliya In-Reply-To: <20260805-derive_clk_perf_tbl_from_perf_domain_opp_table-v1-1-61171ab1cdce@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Info: AW1haW4tMjYwODEyMDA1NCBTYWx0ZWRfX6FZDnrfjLb2E gSG868jXb79NNv54OZbJkVB/qe3hsEPtn6xKqnYdRsyWbShjDySD+SF2b0F6i7Nt6+XyoFG1Adt 7Hv+UnRCjHT0aeuIt+ZF1Snn+xZO9yk= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEyMDA1NCBTYWx0ZWRfX7ij5lcC/fGSg MtM1Nx7vCdbhl9zgw7Td/T6+dybVU/b6enAow6B1FkqnljwAzNz0Tzh1Ots6SOBto2evvWe0hnd LHRvmbSE+9v8eYy/hdD4T9h1hLpvIv5VnSEf7+sYtZyftOZgwuPxkcw119mNTSXPXjT14/m/E4c 48NCIgWq5lVUF7x198qGxskQ5CDe3OEzseINQQl53RW6U0D9p3elLVkkN6QMfWycirgs+e/MT/Y uKWjrf+1YZU0AlRG7wha+IcfMdnCeS3HY6WUprTE8xd5veH6+0MnQaYKdA9FN04SJXH6oqSgkU3 +0bWhfY1/TsBvzwikjVNMc3NBxUoH/GAu+A+pw0HaQYJ4k3h48WXIgdKE5B9gOb656z1wtNpGT2 FTo91V9zl6X9Xi2bOXSWl8puNjeZq40/qw1DYcICOkCS+ZLOchqeb1o88EqaJKLp+U8a2LvZPZW URIHS5yJ/nVpgZ32axg== X-Proofpoint-GUID: QIIrucBRt8VydS0Tx4BBaw4BkznjitxB X-Authority-Analysis: v=2.4 cv=CbA4Irrl c=1 sm=1 tr=0 ts=6a7c199e cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=EUspDBNiAAAA:8 a=dS1doENrTls30Ym8nGUA:9 a=QEXdDO2ut3YA:10 a=ZXulRonScM0A:10 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-ORIG-GUID: QIIrucBRt8VydS0Tx4BBaw4BkznjitxB X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-12_02,2026-08-10_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 phishscore=0 lowpriorityscore=0 priorityscore=1501 bulkscore=0 adultscore=0 impostorscore=0 spamscore=0 malwarescore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608120054 On 8/5/2026 1:27 AM, Praveen Talari wrote: > Currently, scmi_pd_set_perf_state() treats a performance state of 0 as > invalid and returns -EINVAL. As a result, devices attached to SCMI > performance domains can report failures when relinquishing their > performance vote. > > The OPP framework use performance state 0 to indicate that no performance > vote is required. For example, dev_pm_opp_set_rate(dev, 0) is commonly > used (by firmware or linux) when a device is runtime suspended. > > A zero performance state does not require any SCMI performance request > to be sent. Treat it as a no-op and return success instead of reporting > an error. > > Signed-off-by: Praveen Talari > --- Acked-by : Mukesh Savaliya