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 36CD13EFD27; Fri, 18 Sep 2026 09:08:02 +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=1789722484; cv=none; b=dukqcb16HTEzqRc+s895POsTcfPOq6PBI5A7w5P1waXMO+w+3tko6gDUZFzGvtwP+KvwpfKpU5L7mT/J6aH+fiuAwBY9I3nqTio3zcEiFS0Nl+pd5BU5RhBRcxYUib7iqFxRAn7jS8weEgLBVvXtVXKqhhbxfyZYiEiMVU5Ty34= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789722484; c=relaxed/simple; bh=a+u0WLPF1pBjssaax87p4zK10+4fRro4TveSh8jNkAk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=YziWDJe9Jm0ADAsh89jP5ea0wZtIUtFC/YoXEFHXKK2Z+zZb7648/kHALulL6OMAabGJe7lbS2q4lApLuFtSqNmTw96muyCuyw5ulF/iIZPCpoXiCDwQe7LWzmGx6Q+1fMWLHOK0rxZANk1921vSPLI0rc3Ii5hwMbsdNrmYOtQ= 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=LlcUTmcM; 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="LlcUTmcM" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1789722487; x=1821258487; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=a+u0WLPF1pBjssaax87p4zK10+4fRro4TveSh8jNkAk=; b=LlcUTmcM3iZq7xzOE3sAejD8cs7VbWeSLbkHiNQL++NoEp0ZQTKx8zGG EPhqY0JCBsZ0ImoGQ0cByfKGc4SHIh6R6wrvqzJwBA5wQvTCnISjfGOSa Uw56JQlMMrAiCk/dvWCtanhYNIpqgPZHWDCD/WwyRnXhL8TbXonj+bYJm YG25XKSh2F9cjTfJZaZ+dhASGb7FVTx10Hm0FYIkZ8DRa1JEbRGzw/xLY GTcrzgMQPl8MkXTmUoKTJpGRDBsjQ+TlPWAmi8d8dtF8hcEC5sLz3VKM4 fYNsRFIt9wOXLw6sBrtje8N6dVVW/D42YlMpQl8ZlhKQrrW5QrVicaoKj g==; X-CSE-ConnectionGUID: DfTTcDInRgeI3lAjtihk3A== X-CSE-MsgGUID: 10IzJ8zEQZ2Q3ChEWdD84g== X-IronPort-AV: E=Sophos;i="6.27,103,1787036400"; d="scan'208";a="295219128" 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-AES256-GCM-SHA384; 18 Sep 2026 02:07:58 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.87.71) by chn-vm-ex3.mchp-main.com (10.10.87.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.2562.49; Fri, 18 Sep 2026 02:07:53 -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; Fri, 18 Sep 2026 02:07:50 -0700 From: Ariana Lazar Date: Fri, 18 Sep 2026 12:06:30 +0300 Subject: [PATCH v7 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: <20260918-mcp47feb02_refactor-v7-4-82ca794eafe2@microchip.com> References: <20260918-mcp47feb02_refactor-v7-0-82ca794eafe2@microchip.com> In-Reply-To: <20260918-mcp47feb02_refactor-v7-0-82ca794eafe2@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=1789722457; l=1073; i=ariana.lazar@microchip.com; s=20250825; h=from:subject:message-id; bh=a+u0WLPF1pBjssaax87p4zK10+4fRro4TveSh8jNkAk=; b=+QIx3hxCTSWoNnDjJfyfnG0dC1wLSDQZVo+MyJbaUbQVAZmP3XjYiYkkAlXiRngtztRll5o2E Xy20XwdifGACmD7yZsPWduEM59vojlMWHjNAZgDf4+J7GlAiTCCalmR 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 Closes: 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 d910a6cf9718d6c6ad68eb1bb1ff5f3b15b33e84..2bd2e1bd93db01f79122aaeda2ba4ff14320b404 100644 --- a/drivers/iio/dac/mcp47feb02.c +++ b/drivers/iio/dac/mcp47feb02.c @@ -467,7 +467,7 @@ 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