From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f47.google.com (mail-wr1-f47.google.com [209.85.221.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 00C653A169D for ; Tue, 28 Apr 2026 15:22:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.47 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777389769; cv=none; b=biwBeNFRFTTHTXy7updz4EhTwya9k4FFsExyyVAcF2SgWE7fcDRHE2coEjvts2A0Y6Gf1XQiic8omsyGooonyuPGOsfvDbCcjpZdiNVNg1HpL909HRkY/Rkkt2WOegocx30aXFzJU9a2wBCPI6MIUPFYs9modR65RRaezuER2iA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777389769; c=relaxed/simple; bh=f/4yOoCV5vlymixcr/qKdh9g8tiEjeMhHU80anAg0xA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=I1axoRHLS6ogbFeEEYrIPKUQL75nif1yF/ZxM12ua+WW/VQaUe9feSx69EHEXi9Rs0rjilJaVIiqFVKzcPJ6e6nu4m6h6DmuwNMwtqGBZPYTHv3eeP0tH4urFpu2ydVIgRhPM0IZpDAFQQuVeZuIDSycKp/6TJcbLZJeNIHw21A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=SFVdDTvX; arc=none smtp.client-ip=209.85.221.47 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) header.d=gmail.com header.i=@gmail.com header.b="SFVdDTvX" Received: by mail-wr1-f47.google.com with SMTP id ffacd0b85a97d-43cfde3c3f3so11655112f8f.3 for ; Tue, 28 Apr 2026 08:22:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1777389766; x=1777994566; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=JaZn2ogdCpK165bUWKFg9Ofa9m5TU5nDLpQsKfK5onk=; b=SFVdDTvX3o2+qa2Q7Tvh7lAyiKnMVc5WrGnp4Ya1QUH+dOXiUAMykNvDXFI6KU5jlF Xrk/+gJNJB1DhKqdT78/DEk58zcDUQn0DRtxn4BSRDe3zmAeEa384+VTr/1LnWr6LqE8 tc1Md3kmrsFyCS+x4WSoGdZO9L54HJjjqviVo/JmTzSm9Xw9kuHP/I1MySOyga1cYkNQ joSVV93eJXFcS7vFMk2PlJqqmzTYwSfMFiB6CHczyxTwHSh2KWUR0POrbjN8VSNFvXM4 SFas8gcEOs9Ilg4PquEwsNUk1P2cTepUdCfrrzrc0Kwk5eI+Wde1wC4sEl9dVtH62+iy HJHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1777389766; x=1777994566; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=JaZn2ogdCpK165bUWKFg9Ofa9m5TU5nDLpQsKfK5onk=; b=kYvH3JwHrhe4KroJMOlm1Btv4b7qub88OVU442XI1GksEJZMvwGqgsx2TVQ4GLcrT2 DywWDrG+MKD46+EkxRetCJ4zf6Bx6Tbr+exKLehRFz73kS9buGj25GO1le0UgXRFPRri DFk5LXqdGxylLz/JVWxLEVLwDh5jvIg4SPC7toQmcogBpNK8F2GJ6h4Fv+fVq6hIWE6q SgaYJi8/PTjayHMaDJF28Zt+BJKnJr23h4UO6KVKwsQ4aSAJRitUvf9Mkci915W3M1eX OdH5NYedTjsTqfqsSUD1fjJg9ua4kcBTee4dPJrTJmnnSInidfGtso4H3xQhka5lET3l nL3A== X-Forwarded-Encrypted: i=1; AFNElJ8gDFkvdC+YNo7mEpOMBV0LL1hwJ2umQIcpK9n3e21RjBYeS3Pioe6ky45o/aVzxBM4G0D75zPjdg1Ep2A=@vger.kernel.org X-Gm-Message-State: AOJu0YyQNoCyNr0Ygguxor+OB5msKnu3wigE6E+jN7uGKaSNkSKtodTR nyEiCVVvh5KlVpfcqnxsgbx67BPQIS7RbRcB5P9vJ439+0pb8IGeugvU X-Gm-Gg: AeBDieto+T0px0jGC/AMmbnp9Q0ocm8I6bvnypp6eSaikUy66v2mRPDtSXZr4dHWaFq cy5gmT0UIywFe4BZREzVObYmHkyj9xHZjO5/IoEUd5kY0aG7hCoJHGBpFo9tFv9MAk/oOXH0bBu wWwRkw5+jSHwXRlhpMJIdVdwb2eFptfNbcuQPY+9LZubSutmnAqeot0w9WDJpFiYIIM23DgJf0k 0KG4cESmuLKxH2cWancvPcVSmckhhE5jkuq0AM0xlZt7vrjrRC9woHUlyJFAJJ846djBa9HkRkf /Lge37gBkMq+19SsMW6EA/QjCxDJsInIE8ykNJpRmqHfWQxkziatEoT7KCWmBCfaoHOQFVIitz9 aEmS6HTF0B//aiIcJaSdUbZHxMdbzw+9XZ3L27ir0bW0490sWLJGVlY1dT4Znj7AZ+yXSz2fvZP FBvFOd5ayZO/OOtrBdXtrtHH4BaDb8yJm1CmmJQeBhnEHp4g4k X-Received: by 2002:a5d:5f51:0:b0:441:1df5:480c with SMTP id ffacd0b85a97d-4464a070032mr6623907f8f.42.1777389766141; Tue, 28 Apr 2026 08:22:46 -0700 (PDT) Received: from localhost.localdomain ([165.51.114.229]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4463f4c0a35sm8229702f8f.22.2026.04.28.08.22.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Apr 2026 08:22:45 -0700 (PDT) From: Salah Triki To: Jonathan Cameron , David Lechner , =?UTF-8?q?Nuno=20S=C3=A1?= , Andy Shevchenko Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Salah Triki Subject: [PATCH] iio: temperature: tsys01: fix broken PROM checksum validation Date: Tue, 28 Apr 2026 16:22:39 +0100 Message-ID: <20260428152239.66213-1-salah.triki@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The CRC check function was incorrectly using only the first word of the PROM (n_prom[0]) instead of iterating through all words. This caused the driver to fail probing on most devices due to incorrect checksum calculation. - Fix loop to use the correct index n_prom[cnt]. - Ensure all bytes are summed as per the datasheet specification. Fixes: 43e53407f680 ("Add tsys01 meas-spec driver support") Signed-off-by: Salah Triki --- drivers/iio/temperature/tsys01.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/temperature/tsys01.c b/drivers/iio/temperature/tsys01.c index 334bba6fdae6..104dd45598b0 100644 --- a/drivers/iio/temperature/tsys01.c +++ b/drivers/iio/temperature/tsys01.c @@ -119,7 +119,7 @@ static bool tsys01_crc_valid(u16 *n_prom) u8 sum = 0; for (cnt = 0; cnt < TSYS01_PROM_WORDS_NB; cnt++) - sum += ((n_prom[0] >> 8) + (n_prom[0] & 0xFF)); + sum += ((n_prom[cnt] >> 8) + (n_prom[cnt] & 0xFF)); return (sum == 0); } -- 2.43.0