From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 442F050C2AB; Wed, 16 Sep 2026 14:19:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.153.233 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789568374; cv=none; b=CHxakXVC3u5LGdd5NxnHGCghHryRI2kQq63B0Ms2xhXQiQjdjbpEiZwm3uoRioRT14aqkboZ5yTODaVF92Tu+LT79uQSpdVhsElODbhCxqczyFqh7W9bs9v5IzSKn+YoF8l/im1oDNB4uCHJYLfT5lDoL0J/mUKqw3sRAJFcduI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789568374; c=relaxed/simple; bh=6CbH5g9xb8aGFIjAvPk/cTfD2Kwj5m96Ep3ntBhZmZY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=lVExViRNCttgj/pkX34qjt4/QAlDMzOVHoysDGihijj8UahtXNfUCzkp/u0bG5X2yAxw3avtnj2OSTqW+7SFtJWvBPfvs2fR0wpSSnfm+UgC9095aBS0N3FFckAs2nujria2jl6fcv92S/Wikks/g9nN9EOGjidKzk+I7uZPqPU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=DSloliY2; arc=none smtp.client-ip=68.232.153.233 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="DSloliY2" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1789568372; x=1821104372; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=6CbH5g9xb8aGFIjAvPk/cTfD2Kwj5m96Ep3ntBhZmZY=; b=DSloliY2af+U1lyvFQ4NIb/+Ypy8+hdOUiA32KbS7K2zwXlCCusPr6vL ynLQ4DVUxjUwF3OYY81Bzqp2j9L2hITq0etriMqKtvHC1e0uYlScw06Bx Qdo9A29c0c5BAjS9DU00krmb/30AajgWFH7A26pTcvkgGVeSm/mn3dALg wrmwmQT9pkR6PDOikA6FDE7gYjs6Z5pFGpnkKP9QYrsJspuYU+vbXPwe4 oYM+JgrMzVRcQP+JDWgz28z9krKrstzvVkmIMGVnTwIBngDAVdvHt0UL1 hcCmor+SomX/pKZZz1SF+bS3k2o4dOrxIS2uBCX299rlNcrKUFHK6FxBr w==; X-CSE-ConnectionGUID: iP8P1HvzS8KO9TYqKEpMVw== X-CSE-MsgGUID: 8GHGdDTcQ5GdfS2oKYlD2Q== X-IronPort-AV: E=Sophos;i="6.27,103,1787036400"; d="scan'208";a="295112901" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa5.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 16 Sep 2026 07:19:31 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.58; Wed, 16 Sep 2026 07:19:10 -0700 Received: from [127.0.1.1] (10.10.85.11) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Wed, 16 Sep 2026 07:19:07 -0700 From: Ariana Lazar Date: Wed, 16 Sep 2026 17:16:30 +0300 Subject: [PATCH v6 04/11] iio: dac: mcp47feb02: Return len when disabling EEPROM store Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-ID: <20260916-mcp47feb02_refactor-v6-4-285464651f89@microchip.com> References: <20260916-mcp47feb02_refactor-v6-0-285464651f89@microchip.com> In-Reply-To: <20260916-mcp47feb02_refactor-v6-0-285464651f89@microchip.com> To: Jonathan Cameron , David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , "Andy Shevchenko" , Rob Herring , "Krzysztof Kozlowski" , Conor Dooley CC: , , , Ariana Lazar , Jonathan Cameron , , X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1789568335; l=1071; i=ariana.lazar@microchip.com; s=20250825; h=from:subject:message-id; bh=6CbH5g9xb8aGFIjAvPk/cTfD2Kwj5m96Ep3ntBhZmZY=; b=Ir8FfkHfkV/Lm5x1jMwuM+PJkYn8QS9ILDopmbIjazZslDy9IU6KSAuMnVbbaJ9GHme7clIo2 JHVmufGHrXuBsJvbZq54JlvHmOPElDcEFPvke6OZIKpjXd9zSrI7x0/ X-Developer-Key: i=ariana.lazar@microchip.com; a=ed25519; pk=jmvf1fSxcnzZmXfITM3L94IwutM+wqA1POQHiYyD6Dk= When state is false, return the number of bytes (len) the buffer has instead of 0 to properly signal that the input buffer was fully consumed, preventing unnecessary write retries. Fixes: bf394cc80369 ("iio: dac: adding support for Microchip MCP47FEB02") Reported-by: sashiko-bot@kernel.org Link: https://lore.kernel.org/all/20260804134616.1D8A21F00A3E@smtp.kernel.org/ Cc: stable@vger.kernel.org Signed-off-by: Ariana Lazar --- drivers/iio/dac/mcp47feb02.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/mcp47feb02.c b/drivers/iio/dac/mcp47feb02.c index 81aa9063fcf730342d4af114da73ac2fc550243f..117fd41257d5cd430c00847ff64c22c6700dbb6a 100644 --- a/drivers/iio/dac/mcp47feb02.c +++ b/drivers/iio/dac/mcp47feb02.c @@ -468,7 +468,7 @@ static ssize_t store_eeprom_store(struct device *dev, struct device_attribute *a return ret; if (!state) - return 0; + return len; /* * Verify DAC Wiper and DAC Configuration are unlocked. If both are disabled, -- 2.43.0