From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=209.85.167.47 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793311602; b=qLq1DqfqRcJhxGOx7bp4sefwWdL+GfoNoOA4v+AMjsRI3pKs7ABJM9BSQJQ5ROzCBuOi A/jStUu8/jpRMvBqZ0y69uNh4sqrAnjIkSO+jfSXt1HXXXpjqPH+TSWO6FXyHQpkYqFLv rbA5bCBxApvQ0UrgNI00ltBiUBLxaiCsSGLtgl1b4fP0EP9NzF4vYj4pEt9ZofP8DKLq0 znFPwtwCxqAbwcpxVZElvHrSu/d6BA9fcBSpCemdoGJIBRpg6vOLI30ttWCwSdDehsG5r BLRbf+1Lykdh8FhQ1CCfxZwR2IBAiORn8e6P/YKjcUT6mOIEeApQMvBXrwwDzKX/05Q== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793311602; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Gm-Message-State:X-Gm-Gg:X-Received:Received:From:To:Cc:Subject: Date:Message-ID:X-Mailer:In-Reply-To:References:MIME-Version: Content-Transfer-Encoding; bh=mSakZyK9vHjxdS1xBbxtvkjfj3Uy7nFotSNsY/U9cyo=; b=E17l4mLLCsmMwE4ze7qgPDwIDMWSJqWqkpdx3MAVTTP0wsXg3uSIczvNtgW3eGSOCu4B tEkcjSXpRzcCiYsdjEg3cndHgM154VprGoifAkEQFya3/3j9ccuz7PttwodbeW5+Ihqb+ IJtaALuoU1M/bVX4DH4KzyUh/STDfq1mYWRrq5vUT/e3jb6OkVA/HOMnQy+jtTldRfp9X Qk2EUCRBct0B7bYoaO93ooYAMJMBdiUsjnaWDsU3CrmJcvFZ8lzmHAM6f0OO9yun146zV 5KJoacDuhmLxaaoOKLFrbKW0CzNOgrHoLDM57KhJ8wf/Wej07HJPRICDekp13Mn88NQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=QkybjMzS; arc=none smtp.remote-ip=209.85.167.47 Received: from mail-lf1-f47.google.com (mail-lf1-f47.google.com [209.85.167.47]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EA497606A329 for ; Thu, 29 Oct 2026 22:06:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org EA497606A329 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=QkybjMzS Received: by mail-lf1-f47.google.com with SMTP id 2adb3069b0e04-5bcb0f245e0so124240e87.3 for ; Thu, 29 Oct 2026 15:06:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20260707; t=1793311600; x=1793916400; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=mSakZyK9vHjxdS1xBbxtvkjfj3Uy7nFotSNsY/U9cyo=; b=QkybjMzS6x6rdyXiz+OUh53nQ9a2EPobPDtDNswmKhBrViCOiEOdQwxjTq3bsr3VZJ MiJxpffem/ETRRv5M7/MMQGcICg1L1faDvWBtd+aLYvECIZv0/xh13sx1gSARf24DKXG zg86l3qyrOv7DaArYbgWS9HA7le679BN7QEgLGyukeiauABmoi0MypAE8QcB399v43zO rjE+ZCrR0fEU9KX7BpNdBrMEdAHC7d9Kb1oSIKNQe3b9atnIXo7cmq5YXZIITBwant+S 0n8iprSiqjDmySim5h1CHVR0DUxs6DCm8i7GaSB8BYydEVNrye7KtHJHkbo2TVPdQnuq v59A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1793311600; x=1793916400; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=mSakZyK9vHjxdS1xBbxtvkjfj3Uy7nFotSNsY/U9cyo=; b=FvdEKV+uXN1Jl59lSE1/wLL/hUaSbxeN/XgsLgUujomBPzAd6iYR0DfhkDGf10vlHR anCb0xIlrUNJI979bRtHGrlTIXhPLgf9gT+f04oxQp82OJMwM+gg+stTcQmY3cEcujl2 bP06RUDRFD7noo7ypr5kf06qCzs4/RziJV/sePQKLx6TGqs253lh4fL/3fe5xatyG+iG l1/EorW3lpQ9Xk/DhfzTItDVDXMTYyPfT0eopnshgz/UJ0uSxQjBPeFTNTlxADDKYff8 aCl64OZw23WQLE36GFrjqAkjbPoEsHO2kkOe/b8ummISyO87gLUVHE14Bke2Mm94+9hG bUlA== X-Gm-Message-State: AFq9FYJQrRa0xnSfbc+SQboY/4YAJxhLBBNLAt3AyumbAnD48F3bIYwq mPvG/0MGOkNjkrwgxsWGoOCuGSK7c2jDI+4A/iWFRj22mTos/LDmadli X-Gm-Gg: AYBFou2c4tGancMNrntgJoMIPJOA3SmBaDEnWXHGKgT6fY1BFHPHOJkSkAJpP+W13ku xTASndt2etBwfLtbpgzw3G7EnU822nwM2EJt9vt1wrvmrD2u6aL+4Xklo/0k3iwjvLPdHe/nF8I HdRTWdFn3J4TYw6funt+IAYyqYyujjcVvuprJQTowkAzJRZtiyXlkNZKpdVW89+t+3+y2Opgh0M wdg+KV3/WzukRFXjBQ7V5bhWkNHRUYhDf8BlBm1ixMdUfCB1iZpKvIxJo/l9AQaBEXo9c9+udRS kAqrG4fRPVHbbvF8BdDDszIlV0SiW1od9D33P37oR0K9erXsgTxx88sNbUHSyPehFoRfbDpKqoP QZybtgil7dj++3DhfPfIcXIbRuFYatL0ENYfK1E+TBiK8rXSs7EhZ3kFBK9hYXZzbTuCmhJZKYx ZohxjYRGrfj6LiOndLXTh5DZgz8tURjiATNX8xF2AeTyPUNFlWfVkct/DlckFvCNloud16F5BSq d8utPSsdadu0Y3sfQjWcgZ6yQzWZLPu1OjErYYIkZM5FH9MP5h8DQfJq6pelO5hZhoUYda3CqsT 4qQhgw4ZmY3m021qY7x/4B2C1gVQRRIPP7tYtAM5y2RNuQXSwHC7iQmk9ESWBFWoZegiU7F7Djx hp+vyvES3b0Ok/ccYcVA8XQTlT4IotlZLU+u/rQ== X-Received: by 2002:a05:6512:31cf:b0:5bf:b96b:bce6 with SMTP id 2adb3069b0e04-5bfd94ccb81mr96046e87.0.1793311600012; Thu, 29 Oct 2026 15:06:40 -0700 (PDT) Received: from yantra.. (nekmmqtmquaao4qwdoc-1.v6.elisa-laajakaista.fi. [2001:99a:d7d:c300:6842:e549:8c95:f73c]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5bfd9c507adsm9605e87.65.2026.10.29.15.06.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Oct 2026 15:06:38 -0700 (PDT) From: Rupesh Majhi To: Andy Shevchenko , David Lechner , Eddie James , Joel Stanley , Jonathan Cameron , =?UTF-8?q?Nuno=20S=C3=A1?= , Rupesh Majhi Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Sashiko , Paulius Zaleckas Subject: [PATCH 1/3] iio: pressure: dps310: reject a zero rate or oversampling ratio Date: Fri, 30 Oct 2026 00:06:33 +0200 Message-ID: <20261029220635.18816-2-zoone.rupert@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261029220635.18816-1-zoone.rupert@gmail.com> References: <20261029220635.18816-1-zoone.rupert@gmail.com> X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The rate and ratio setters accept 0, which also covers 0.5. ilog2(0) gives -1, which masked into the register is 128 Hz or the reserved precision 0b1111. The latter makes every pressure read fail with -ERANGE and temperature read 974 degrees C. Reject values below 1. Fixes: ba6ec48e76bc ("iio: Add driver for Infineon DPS310") Fixes: d711a3c7dc82 ("iio: dps310: Add pressure sensing capability") Reported-by: Sashiko Closes: https://sashiko.dev/#/patchset/20260921183132.233136-1-zoone.rupert%40gmail.com Signed-off-by: Rupesh Majhi --- Cc: Paulius Zaleckas drivers/iio/pressure/dps310.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/iio/pressure/dps310.c b/drivers/iio/pressure/dps310.c index 71053f4463e5..b6aa5dbe2bcd 100644 --- a/drivers/iio/pressure/dps310.c +++ b/drivers/iio/pressure/dps310.c @@ -410,7 +410,7 @@ static int dps310_set_pres_precision(struct dps310_data *data, int val) int rc; u8 shift_en; - if (val < 0 || val > 128) + if (val < 1 || val > 128) return -EINVAL; shift_en = val >= 16 ? DPS310_PRS_SHIFT_EN : 0; @@ -433,7 +433,7 @@ static int dps310_set_temp_precision(struct dps310_data *data, int val) int rc; u8 shift_en; - if (val < 0 || val > 128) + if (val < 1 || val > 128) return -EINVAL; shift_en = val >= 16 ? DPS310_TMP_SHIFT_EN : 0; @@ -455,7 +455,7 @@ static int dps310_set_pres_samp_freq(struct dps310_data *data, int freq) { u8 val; - if (freq < 0 || freq > 128) + if (freq < 1 || freq > 128) return -EINVAL; val = ilog2(freq) << 4; @@ -469,7 +469,7 @@ static int dps310_set_temp_samp_freq(struct dps310_data *data, int freq) { u8 val; - if (freq < 0 || freq > 128) + if (freq < 1 || freq > 128) return -EINVAL; val = ilog2(freq) << 4; -- 2.43.0