From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B7A7F400966 for ; Wed, 12 Aug 2026 09:13:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786525996; cv=none; b=IM7dFeu/lehAbDpXU0TjDXb2KNIRfVOa98rbkDjEw7gCT2k6dBLmNuT/D2Or4JP8E5uU/0eg0M3i81SO3xg2lpsuoIVYiAKXgbM9pED0udK4MqX/Cgz1rUvaE+ORjK/GRck7YB5Cl3AqQejkVY0ET/RiUXKSsy32yA4gAyS5i9g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786525996; c=relaxed/simple; bh=ocgX1pDw3Akkw8kPU55zkyixBru7VgTxC2qT9emL7gw=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=BBYhcvIgInT0l6gcNkHWm/kDRju/31aQFkf0JlCtP68ScTo7LKiDW224CdDDTaIy1pJqCbBaP8IQ9ELznHiy8leIdYqxcXZYCyofPFOvy+07/xLEq9avZz2PFN/Yy57wMX1Ztq6d3PA6/9/2f5BWIkrldlbkJZKrWXDK6PHnL7s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=osRJ3OkD; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=MlodgneH; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="osRJ3OkD"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="MlodgneH" Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 67C92dAJ298691 for ; Wed, 12 Aug 2026 09:13:12 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= en3WBeGYYKKXUQNTqjZIewPokiWrCYWKofzjGcl8Hwo=; b=osRJ3OkD/txwrGrJ lYo1OSnlvhhGF2/i/13Kk7xLHpWivjlqAtdThdDCHwc/s3INThmnBrcB7/pHbgST pHDUOtI0/SRtNYiJuVTPGDs9/WB/L/mpnGHwbMmA/vUH24Qm0RkxNIf9rvbvD/mi cnohwO9Jl61A45tm9uE2iamEmWawRtIN8P/w9AsuIIFcZfX7IqOgi2PjtaxgCJYv t5PpN3VcOt0gsNEFwzU4Q02tQb5bGnmtcqHnZIw5ElWmkIGLV5Tu0AtBuSuJfnG4 CznYM1wo3J/6JAbGhzpf8/HISfINk1wpHjohJR41rICy2jZLt5tYzRDIxwhleqRI 17YWHg== Received: from mail-pj1-f71.google.com (mail-pj1-f71.google.com [209.85.216.71]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4g0nut819c-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Wed, 12 Aug 2026 09:13:11 +0000 (GMT) Received: by mail-pj1-f71.google.com with SMTP id 98e67ed59e1d1-38fa7b09921so1342040a91.1 for ; Wed, 12 Aug 2026 02:13:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1786525991; x=1787130791; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=en3WBeGYYKKXUQNTqjZIewPokiWrCYWKofzjGcl8Hwo=; b=MlodgneHx3h4LPKC9I1/3d92DFw6aChr4Ldy+qUCOw4dZ5WQZsWuBX/ov5Hwy74fNO LLHBFVew17tYR7Tul3u6l4jaLpFxbcbDn1BHltBHgtXWtrUftZqiMyYkpyxKOP0ZWYjX Cqk6U+jkj7JwhBNMMFvh+8c2D5ehLQDMc/3bokn2gXUvUFlrtEbTe+VbA/kkpb6gAzhr IMVQLe+4LISV7kQTKbsWFblJg0NoIZTdStsMgHCMSNIr0cGBwV2ZBNO+r5xPvMwgfFHv lk9nI6n+MvIkiv/3BwOCQ2Ayf9qiM6bWk//nIOA+Tu5ajI+S5oCci5iNw8W06aQ2YU8i ONHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786525991; x=1787130791; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=en3WBeGYYKKXUQNTqjZIewPokiWrCYWKofzjGcl8Hwo=; b=S5clkTm71G1gfn2wvrFOubVcfGtu2r2XTw2qOLJAcM4YDlgkOSq7bo7E3Pb1bkHaXl FCzBxQiGkw/5nqB1dbV+WDrzQfywZqC+/eC9/2cAU4T98NosoVG3P/EBmzESnqLdc6Vv BrO6gHPeFXXammeNcE+OgY4atRJt8Ux/jYffLk7Nd62ya94KLwdC95QGLddkaqsCsKHm 8yKllTJ3gXOympi0bxBPaKDKHB8h2aZuocx18sIvnKs0ZOuuLWAer5hO9gygo3gT+KWN i+J7ZEt0Vwa/cYc/JRRtE6FhS/AZlrlPK+k6ASnw1lFc7Wd/CRvi6SEc+hwH1wYF3KOZ GlYQ== X-Forwarded-Encrypted: i=1; AHgh+Rq9h+Td+mPiN5ziBFYeAbWQDi7/jQOtpMkr604FP5q++gCMCq8EKhpqlt5ugBfJsvStgscPqP7vPofIfYs=@vger.kernel.org X-Gm-Message-State: AOJu0YxkYR+D6RLeeXxJYGclFeeWJbFW+YGTlS64DK6GSg2GptCRMq5B 16+XxDTW1T4JkQqozx8UBJpkv+xhn65xoRYm01nLGGqHbBMz990tluVv5AHoygevV7J/IT7CuZt 4eYmEqzAEHeqmiJssgcoe6jySYgzxWHROAmX2kI5S/kdHYNADBubRwwE99x3TOfd6qZc= X-Gm-Gg: AR+sD134KtX/waqXGLLoJbqhdzz7ygShYyX0nFTLyxrw4fuXV9TEiCkZC8XaFrRUC9W dVwcoPRee+3YCtdEK9CoZ5Sz8zcWCPTrhshDSFZ3QZSe/rNIbo4DPYI7wAiWfdKM0/M613t2D9X phrw/X2NwrJu2vSqU5MBTLwjhMz2VQpRYtAKOr9JJDbxe00URzOL4+cNLexuT0KNw6m1B7zlyI9 E3rfAcN9iRGhSbjc+qclPgQ6xLQ6Rr9InmQa7Rwzuv8QMW5PpI3MOpckeRUzDqydh+tn710T3Ft 7alTV6jiqqBrlRGVZS2O6/0CAVwpw10QIT3hDanadf35u1SbnNFYDFeMSOwzQIR/jOTtnYG4zCq QGdqSY5VuqDcn/IbUWUot9vecY2Sw/nbG6Q== X-Received: by 2002:a17:90b:3c11:b0:380:9f17:6df3 with SMTP id 98e67ed59e1d1-3930119ed5cmr3829301a91.4.1786525991248; Wed, 12 Aug 2026 02:13:11 -0700 (PDT) X-Received: by 2002:a17:90b:3c11:b0:380:9f17:6df3 with SMTP id 98e67ed59e1d1-3930119ed5cmr3829241a91.4.1786525990816; Wed, 12 Aug 2026 02:13:10 -0700 (PDT) Received: from [10.217.219.92] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-392f88d239esm2915805a91.6.2026.08.12.02.13.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 12 Aug 2026 02:13:10 -0700 (PDT) Message-ID: <779ec0da-4b51-4f8e-a59f-d482f8e8dbaf@oss.qualcomm.com> Date: Wed, 12 Aug 2026 14:43:02 +0530 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 1/7] pmdomain: arm: Fix -EINVAL from scmi_pd_set_perf_state() on state 0 To: Ulf Hansson Cc: 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 , 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: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Info: AW1haW4tMjYwODEyMDA3MyBTYWx0ZWRfX8MHwsgeKMU4j 4vyVE32jyrQJYQmtsr6leVXaoUUu1eCboBoyWGqUIR3ecUyHVEwNtz70xopapNOF3oSWZ6ZJvgp k3S3fsbAdJfLNqcMgMCpicBE8o/JBk0= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEyMDA3MyBTYWx0ZWRfX85TNgW1rFttc o9XhXTjsmZO+5NOBNXp0fsidwawTEmvsdoisbCrIQZeQaMsrTo3qYlku/He3NmG2QpVimtxtDUl hyys+JYWJUkpcvX47oXTG1jV7u+nbO6cx0V30q6y4i+aoX0RelHmX8RRBlrGc/GXjUl7bXdSjDe DWgUkzlvm+1eqF34GjN1MNy5DjOtH/JzpJzIEVn9aX1NN18UqPSaKeV5ewdWq9x6i+ZBVrGn4Oo 1yuqQlRnFVdqkWkDkT965yn7qLG9g5Rf68a59ByHaI5/pcC0WqqPd2ScqOjD8phkT1amacMlo5d N58YvLiMqfohqjaHiK4scCeUdB9Bi8PU/tXQCZm9trXATS6JuejnljSPzcRDKiI8fk0PCrh70jl IvDNcoc6+uH8gdmb+yduZGUqbIWToy0w/fnlqG+GSxaiEEOldrU5fni5ZYXkShUFqcVmo1YYamE Cb+2ezuDjhyFuX5qtKg== X-Proofpoint-ORIG-GUID: ZvfJ7To3YB6n9hgqTRUAJlhjHsDr-sFc X-Authority-Analysis: v=2.4 cv=POA/P/qC c=1 sm=1 tr=0 ts=6a7c3927 cx=c_pps a=UNFcQwm+pnOIJct1K4W+Mw==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=EUspDBNiAAAA:8 a=GpIJag5-aaecOpU0j1UA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=uKXjsCUrEbL0IQVhDsJ9:22 X-Proofpoint-GUID: ZvfJ7To3YB6n9hgqTRUAJlhjHsDr-sFc 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 malwarescore=0 phishscore=0 lowpriorityscore=0 spamscore=0 clxscore=1015 impostorscore=0 bulkscore=0 suspectscore=0 priorityscore=1501 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608120073 On 8/12/2026 2:27 PM, Ulf Hansson wrote: > On Wed, Aug 12, 2026 at 9:24 AM Mukesh Savaliya [...] >>> --- a/drivers/pmdomain/arm/scmi_perf_domain.c >>> +++ b/drivers/pmdomain/arm/scmi_perf_domain.c >>> @@ -33,7 +33,7 @@ scmi_pd_set_perf_state(struct generic_pm_domain *genpd, unsigned int state) >>> return 0; >>> >>> if (!state) >>> - return -EINVAL; >>> + return 0; >> >> Won't this cause an issue to other drivers ? how are they going to take >> action based on changed return value ? > > I think it's rather the opposite. With the current returned value > (-EINVAL) the driver doesn't really know what to do. It tried to drop > its vote, but that failed - so what can it do? > > Moreover, from genpd point of view, this fixes a real bug as the > aggregation for the performance state becomes incorrect during runtime > suspend/resume. > Got it, thanks Ulf for your explanation and also read your previous comments. >> >> Remove Acked-by due to this till i give back. Reviewed-by: Mukesh Savaliya