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 2C0CA58F078; Wed, 9 Sep 2026 14:19:02 +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=1788963543; cv=none; b=l79MFUUSF2fG5AMlGbcPXJgmuN1smDToE+AZ/oOuXtxBJjUcD0ZO+WTxl7988hiGYOZ///HeKRAuisPbbm2VsHObtOK/0R9+eKm1bmfso4jyF/spuFlLnJdqnYn685laB0/WFi+MWUnmOKXb36dPegeUdyqpoEvmbzGmzq3rpnU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788963543; c=relaxed/simple; bh=M7VBk8FIgPIaUB2lPOsLSGOKSeEmxwO9WNXNNKgjIKc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=ViYfsYuQxzt6FQrjR5sP6gLiDkHS8GC/+FoylViA54afyf/0ig5kvDBEzLXzolgHgB4N/iGY+83bwRuddhfsiyNIgJtxL8aXtdL5QXMPjeHYq61RUBnKBbsw9dO4fXpASVmTuRIxIeKfUyqHzDOM5SWe4HxEPh38Ul/p0yJqPMw= 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=TDYh2FvX; 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="TDYh2FvX" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1788963542; x=1820499542; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=M7VBk8FIgPIaUB2lPOsLSGOKSeEmxwO9WNXNNKgjIKc=; b=TDYh2FvXCHlxzX8bFQp8yjl+V9z+3JEIN/ozrr4FwU67t2pSvJ6Zn6vb RnJMn2JOSarPC1Kl2h/w/oVxzTrmRkl41Ir9+Mopk2P6D7R91zCsjsALl fEBh0g8XM2/98e2hXyjrVjNmQJFrkEmGIuLfWCq3RmBEvH1PCRngSXfj1 8qFV0MsvKgd4pxoPqvKK/bFpfAZ8cN5sQwowJHhDRVjJYi3vaWG1rSRSJ ZGgbEndxZgUWMowV8kcfXXy2RwMlLlVAxOeVIbA0jMmDUbAnSSJDsb3Ff ZIimYlpej/QVeA3tLAXrdRhGOvpiCBNZIT7eGNiPPJj4EYI17mZ5HixsA w==; X-CSE-ConnectionGUID: minjwViPSTGXzdRrBf5YQg== X-CSE-MsgGUID: rfK2DfniTb27EOpkFR41XQ== X-IronPort-AV: E=Sophos;i="6.25,270,1779174000"; d="scan'208";a="294763994" 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; 09 Sep 2026 07:19:02 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.85.143) 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, 9 Sep 2026 07:19:01 -0700 Received: from [127.0.1.1] (10.10.85.11) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Wed, 9 Sep 2026 07:18:58 -0700 From: Ariana Lazar Date: Wed, 9 Sep 2026 17:18:46 +0300 Subject: [PATCH v5 03/10] iio: dac: mcp47feb02: Return len when disabling EEPROM store Precedence: bulk X-Mailing-List: devicetree@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: <20260909-mcp47feb02_refactor-v5-3-8b67bcab93d1@microchip.com> References: <20260909-mcp47feb02_refactor-v5-0-8b67bcab93d1@microchip.com> In-Reply-To: <20260909-mcp47feb02_refactor-v5-0-8b67bcab93d1@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 X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1788963530; l=851; i=ariana.lazar@microchip.com; s=20250825; h=from:subject:message-id; bh=M7VBk8FIgPIaUB2lPOsLSGOKSeEmxwO9WNXNNKgjIKc=; b=Kjg0BbDpOReFT9J9Btd2AqtrBKFdzunjWaE//SVci86Lyqr5FqS0It98wGblVR1DG20i82GoJ 1PPABC4NeTQDel6CpPbZlZYHoBiRugetnEmtOoSaUip0d8t0jGgs2RP 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. 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 bf78618ac2c896b94e494a1ce76ef5b3e520f482..2ee981393aa1a2dc0bf65d25ab937132fe2e7bf1 100644 --- a/drivers/iio/dac/mcp47feb02.c +++ b/drivers/iio/dac/mcp47feb02.c @@ -469,7 +469,7 @@ 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