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[88.193.135.236]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-3a6075e3522sm26102611fa.21.2026.09.21.11.31.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Sep 2026 11:31:06 -0700 (PDT) From: Rupesh Majhi To: Jonathan Cameron Cc: Andy Shevchenko , Bill Wendling , David Lechner , Eddie James , Joel Stanley , Justin Stitt , Nathan Chancellor , Nick Desaulniers , =?UTF-8?q?Nuno=20S=C3=A1?= , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev Subject: Re: [PATCH v7 09/10] iio: pressure: dps310: implement .hwfifo_flush_to_buffer() Date: Mon, 21 Sep 2026 21:31:06 +0300 Message-ID: <20260921183106.231972-1-zoone.rupert@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <178992913316.706584.1446996024286841775.b4-review@b4> References: <20260918122517.377565-1-zoone.rupert@gmail.com> <20260918122517.377565-10-zoone.rupert@gmail.com> <178992913316.706584.1446996024286841775.b4-review@b4> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Sun, 20 Sep 2026 19:32:13 +0100 Jonathan Cameron wrote: > As talked abotu above, I think iio_device_claim_buffer_mode() > will do the job here as it stops the IIO core transitioning between > modes until afte this is done with the active_scan_mask. It does, but patch 10 then warns on it: dps310.c:1233:2: warning: releasing mutex 'iio' that was not held [-Wthread-safety-analysis] clang 23.1.2, CONFIG_WARN_CONTEXT_ANALYSIS=y. There is a DEFINE_GUARD_COND for direct mode but none for buffer mode, so clang cannot follow the conditional claim. v8 holds the same lock over the same span with IIO_DEV_GUARD_CURRENT_MODE() and the mode check that was already there. If you would rather have the named API, say so and I will add the buffer mode guard and ACQUIRE macro to the core first. Rupesh