From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794064086; b=Ms35Z+SpDpzxV4BFHbmM/poGjtKScSIsLSmWqWbs8Z0JKlUahOIuUYzJ0YX4tqH/EPzJ 7+4Sg89bRjvgi0FOsGN4QnU/p8qQ70kP5ZinX9rThKVddfMWNqMG2DfzMdS4STv+7CcEr MpqQ7kGvza3gKefWQLCBGSciz9/tnrX1Cx3nXtNNcEeUbVmcrjPj7rTLDWRVAb3vTZNRb wbkz6AXVJDVG2vMo+b5ovspzP6Lg1wneLzsssXpi5R1A8jypSSjcyUYFkHy6vbZEBqmRl 8pt+Ax1OZmSFCYNz2XCGZGh4b2n4+fp9Xq4HKeMvCQyeIjFKucOhq1DzmlRDJ3e8wGg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794064086; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=bShoOGb3P1sUlS2tWmGZHvRS9gu07P6nBilRHI8saB8=; b=hMhyJpBRlSKo01YToz52IMY/RvqMbMNJDhBn5m7pxBxzjqBkggLuWhCcSEEARsoko0ER FSWT7MW17ghzYcTuYI1O4ub00IAWdLEmt9tZDPVvOntf+UaLMCYkrWkKboEvsZabrnVJF 4g4IF5SAsx7uElIKjrMRxGX6fdqWzSktjGgJFk0hBNSd1BhbNr19INL6MxN1WCPxIm3QL WfNrNzeIPBxemvIZ3Ds90LWbKhhQZ04fGfRvynDEsD2LHg/Rofbrgi+FarhTy44KkvMUg T9FAaDZrTn4JBd1cJq1qKPRJ3WBPMtVJg4i16psaC5XjqHa0BZInzLsUI9ggKH3IFvg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=p7WN1Hxc; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9D1C2606C026; Sat, 7 Nov 2026 15:08:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=p7WN1Hxc Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4B9EB1F0089F; Sat, 7 Nov 2026 15:08:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794064086; bh=bShoOGb3P1sUlS2tWmGZHvRS9gu07P6nBilRHI8saB8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=p7WN1HxckvdzUnAHbTS49mZn5DPf/WwkqysP9S6J0lOzrD/NTDbEzP/4Srzv8D2U+ 7L3Raq+hgzttr88Rz3BOHoIf+XLGreaytV4nZn2639YTW9mCeHPBDk0CIkCIb8Rurd Lf754f2hC3RK4R0DsiSjr/AH1N6tjL2yKLsX/+m4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, sashiko-bot@kernel.org, Ariana Lazar , Andy Shevchenko , Jonathan Cameron , Sasha Levin Subject: [PATCH 7.3 0213/1257] iio: dac: mcp47feb02: Increase EEPROM Programming Write Cycle Time Date: Sat, 7 Nov 2026 08:41:49 -0500 Message-ID: <20261107134945.425704452@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134939.434104957@linuxfoundation.org> References: <20261107134939.434104957@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ariana Lazar [ Upstream commit 77f5e4bd63db9be9978a6d2ac821a249a3d5fd82 ] Increase the EEPROM write polling timeout to prevent -ETIMEDOUT errors and incomplete nonvolatile write cycle, according to the time specified in the datasheets (11-16 ms). Fixes: bf394cc80369 ("iio: dac: adding support for Microchip MCP47FEB02") Reported-by: sashiko-bot@kernel.org Closes: https://lore.kernel.org/all/20260819125300.6B9211F000E9@smtp.kernel.org/ Cc: stable@vger.kernel.org Signed-off-by: Ariana Lazar Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin --- drivers/iio/dac/mcp47feb02.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/dac/mcp47feb02.c b/drivers/iio/dac/mcp47feb02.c index fdc266ba1536f..7758e37080958 100644 --- a/drivers/iio/dac/mcp47feb02.c +++ b/drivers/iio/dac/mcp47feb02.c @@ -447,7 +447,7 @@ static int mcp47feb02_write_to_eeprom(struct mcp47feb02_data *data, unsigned int ret = regmap_read_poll_timeout(data->regmap, MCP47FEB02_GAIN_CTRL_STATUS_REG_ADDR, eewa_val, !(eewa_val & MCP47FEB02_GAIN_BIT_STATUS_EEWA_MASK), - USEC_PER_MSEC, USEC_PER_MSEC * 5); + 1 * USEC_PER_MSEC, 150 * USEC_PER_MSEC); if (ret) return ret; @@ -507,7 +507,7 @@ static ssize_t store_eeprom_store(struct device *dev, struct device_attribute *a ret = regmap_read_poll_timeout(data->regmap, MCP47FEB02_GAIN_CTRL_STATUS_REG_ADDR, eewa_val, !(eewa_val & MCP47FEB02_GAIN_BIT_STATUS_EEWA_MASK), - USEC_PER_MSEC, USEC_PER_MSEC * 5); + 1 * USEC_PER_MSEC, 150 * USEC_PER_MSEC); if (ret) return ret; -- 2.53.0