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Sat, 14 Nov 2026 03:46:10 -0800 (PST) Received: from [192.168.35.40] ([218.50.238.131]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-37955332a77sm14342627eec.4.2026.11.14.03.46.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 14 Nov 2026 03:46:09 -0800 (PST) Message-ID: Date: Sat, 14 Nov 2026 20:46:06 +0900 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 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] PM / devfreq: Do not change the frequency of a suspended device Content-Language: ko To: Arun Iyengar , MyungJoo Ham , Kyungmin Park , Chanwoo Choi Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Boris Brezillon , Steven Price , Liviu Dudau , Jonas Karlman References: <20261112-devfreq-suspend-sync-v1-1-af64603ef43e@gmail.com> <179460206763.199714.13518791714665074913@gmail.com> From: Choi Chanwoo In-Reply-To: <179460206763.199714.13518791714665074913@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 11/14/2026 5:34 AM, Arun Iyengar wrote: > Please don't apply this version. The Sashiko review found bugs in it: > > - A limit change on a suspended passive device stores 0 in > pending_freq, so devfreq_resume_device() can then fail with -EINVAL. > - After a deferred update, resume asks the governor instead of > restoring resume_freq, so a userspace governor without set_freq > stays at the suspend OPP. > - Two error paths leave the device marked suspended or skip > DEVFREQ_GOV_RESUME. > - The passive question in the cover: exynos-bus children need to > follow their parent to its suspend OPP, also at shutdown. > > v2 will fix these. > > Arun OK. I'll wait v2. Best Regards, Chanwoo Choi