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Wysocki" , Daniel Lezcano Cc: Zhang Rui , Lukasz Luba , Christian Marangi , Lorenzo Bianconi , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 2/4] thermal/drivers/airoha: Serialise access to the shared ADC Date: Tue, 29 Sep 2026 19:03:56 +0300 Message-ID: <20260929160356.38468-1-sochnev.v.74@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <5c0317c1-f4df-4b2a-ab03-2a7b7132b1c6@oss.qualcomm.com> References: <5c0317c1-f4df-4b2a-ab03-2a7b7132b1c6@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On 9/29/26 09:53, Daniel Lezcano wrote: > On 9/15/26 21:11, Vitaliy Sochnev wrote: >> Serialise the sequence, drop the cache, check the selection after >> writing and after sampling, and return -EAGAIN if it does not hold. >> >> Signed-off-by: Vitaliy Sochnev >> --- > > Should this have a Fixes: tag? No. Before this series each device registers a single zone, and thermal_zone_get_temp() serialises reads under the zone lock, so the current driver never reads the ADC concurrently. The race appears with patch 4/4, which registers a zone per sensor; this patch prepares for it. I can state that in the commit message in v3 if you prefer.