From nobody Tue Jun 16 14:55:11 2026 Received: from cvsmtppost16.nm.naver.com (cvsmtppost16.nm.naver.com [114.111.35.233]) (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 AA47C39C007 for ; Mon, 20 Apr 2026 11:47:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.111.35.233 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776685662; cv=none; b=nFd095oAJRb2/5+7E5HYp9B5zF/ZVEGCfV+yvBgAFmm84F3zDZYOz+zMOCT6zvZeB2Is33vxhDjrNSZUJevXslPpZ2OIL+u3xRizdHHDCDos1vkyukxKhe4Pwvf4uiF1oivWPEQsFpbooOTiywk3A64YhdKPvdfG2bQQzhioNCk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776685662; c=relaxed/simple; bh=8XifmBjRXAmCF05BRVFiftLmsRfF3B+6jLWYzxxr2rU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ItT4efvacN6dYfY4+qBIAmNqmfuAvjPvwpebIBIRq6IHTPBK4fGdVN+T+SFhvmUhOQntcgto6txVUDINUm/5nSzTAJw8IQ9z8AUGg3qWsj5EBFl3f9kHEhoBUjLEIV5pt1CSnoF9BmunSFVzIg82kcmUulhgKpmfrF5Zy6VRucI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=naver.com; spf=pass smtp.mailfrom=naver.com; dkim=pass (2048-bit key) header.d=naver.com header.i=@naver.com header.b=i4jbjJ1O; arc=none smtp.client-ip=114.111.35.233 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=naver.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=naver.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=naver.com header.i=@naver.com header.b="i4jbjJ1O" Received: from cvsendbo031.nm ([10.112.22.37]) by cvsmtppost16.nm.naver.com with ESMTP id R49eEyLXTwqCrtNEY0uVeQ for ; Mon, 20 Apr 2026 11:27:25 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=naver.com; s=s20171208; t=1776684445; bh=8XifmBjRXAmCF05BRVFiftLmsRfF3B+6jLWYzxxr2rU=; h=From:To:Subject:Date:Message-ID:From:Subject:Feedback-ID: X-Works-Security; b=i4jbjJ1OZhVdImcAm80Ay9NgcbcQ1+MJHtrnfmC1i8AWxbsrnj0U9pHjd/NYzylzT IuXP8iwaV+VnqEo4imMoczJ5t0o9Kdv5D7p0luS4+28DIjb/QBh7LfNvtO9F0qiany tnjUJ0lcSw3j29drZitfKesEH5T6o0vxZrhA/CTqD9DO/wRFpwJfsaZ0W2a+lJesNr mRRtCSnBsi3Y2bFZHXZfU1Kp2Fml8tLu8TTrJXs+5gyYu9rY58/32MGYJuGMa1C1jV 4tuJIYX48854XvSuyzAWcVwpZjtNJnijrQ9NlqTP5tWAXT/Xd9+njrjquSnP1T4OXQ 5T50lJdbVMI1A== X-Session-ID: KRQO1LvrS-yNLCVyk89Zpg X-Works-Send-Opt: p/Y/jAJYjHmwKo2qKqJYFquqFNwkx0eFjAJYKg== X-Works-Smtp-Source: gwn9FoMXFqJZ+HmdFAgZ+6E= Received: from JMW-Ubuntu.. ([14.38.141.199]) by cvnsmtp006.nm.naver.com with ESMTP id KRQO1LvrS-yNLCVyk89Zpg for (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384); Mon, 20 Apr 2026 11:27:24 -0000 From: Minu Jin To: lars@metafoo.de, jic23@kernel.org, Michael.Hennerich@analog.com, gregkh@linuxfoundation.org Cc: andy@kernel.org, linux-iio@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Minu Jin Subject: [PATCH] iio: adc: ad7816: use sysfs_emit() instead of sprintf() Date: Mon, 20 Apr 2026 20:27:20 +0900 Message-ID: <20260420112720.1662703-1-s9430939@naver.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: quoted-printable Content-Type: text/plain; charset="utf-8" Replace sprintf() with sysfs_emit(). sysfs_emit() is preferred than sprintf() in show() functions. It has aware of the PAGE_SIZE buffer limit and ensures safe buffer handling. Signed-off-by: Minu Jin --- drivers/staging/iio/adc/ad7816.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7= 816.c index 172acf135f3b..0e32a2295990 100644 --- a/drivers/staging/iio/adc/ad7816.c +++ b/drivers/staging/iio/adc/ad7816.c @@ -124,8 +124,8 @@ static ssize_t ad7816_show_mode(struct device *dev, struct ad7816_chip_info *chip =3D iio_priv(indio_dev); =20 if (chip->mode) - return sprintf(buf, "power-save\n"); - return sprintf(buf, "full\n"); + return sysfs_emit(buf, "power-save\n"); + return sysfs_emit(buf, "full\n"); } =20 static ssize_t ad7816_store_mode(struct device *dev, @@ -156,7 +156,7 @@ static ssize_t ad7816_show_available_modes(struct devic= e *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "full\npower-save\n"); + return sysfs_emit(buf, "full\npower-save\n"); } =20 static IIO_DEVICE_ATTR(available_modes, 0444, ad7816_show_available_modes, @@ -169,7 +169,7 @@ static ssize_t ad7816_show_channel(struct device *dev, struct iio_dev *indio_dev =3D dev_to_iio_dev(dev); struct ad7816_chip_info *chip =3D iio_priv(indio_dev); =20 - return sprintf(buf, "%d\n", chip->channel_id); + return sysfs_emit(buf, "%d\n", chip->channel_id); } =20 static ssize_t ad7816_store_channel(struct device *dev, @@ -231,9 +231,9 @@ static ssize_t ad7816_show_value(struct device *dev, data &=3D AD7816_TEMP_FLOAT_MASK; if (value < 0) data =3D BIT(AD7816_TEMP_FLOAT_OFFSET) - data; - return sprintf(buf, "%d.%.2d\n", value, data * 25); + return sysfs_emit(buf, "%d.%.2d\n", value, data * 25); } - return sprintf(buf, "%u\n", data); + return sysfs_emit(buf, "%u\n", data); } =20 static IIO_DEVICE_ATTR(value, 0444, ad7816_show_value, NULL, 0); @@ -281,9 +281,9 @@ static ssize_t ad7816_show_oti(struct device *dev, value =3D AD7816_BOUND_VALUE_MIN + (chip->oti_data[chip->channel_id] - AD7816_BOUND_VALUE_BASE); - return sprintf(buf, "%d\n", value); + return sysfs_emit(buf, "%d\n", value); } - return sprintf(buf, "%u\n", chip->oti_data[chip->channel_id]); + return sysfs_emit(buf, "%u\n", chip->oti_data[chip->channel_id]); } =20 static inline ssize_t ad7816_set_oti(struct device *dev, --=20 2.43.0