From patchwork Wed Dec 7 07:33:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ye.xingchen@zte.com.cn X-Patchwork-Id: 13066712 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4928CC352A1 for ; Wed, 7 Dec 2022 07:34:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229564AbiLGHdu (ORCPT ); Wed, 7 Dec 2022 02:33:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58774 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229854AbiLGHdt (ORCPT ); Wed, 7 Dec 2022 02:33:49 -0500 Received: from mxhk.zte.com.cn (mxhk.zte.com.cn [63.216.63.40]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3FE951DA63; Tue, 6 Dec 2022 23:33:48 -0800 (PST) Received: from mse-fl2.zte.com.cn (unknown [10.5.228.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mxhk.zte.com.cn (FangMail) with ESMTPS id 4NRptf6w7qz8QrkZ; Wed, 7 Dec 2022 15:33:46 +0800 (CST) Received: from xaxapp01.zte.com.cn ([10.88.40.50]) by mse-fl2.zte.com.cn with SMTP id 2B77XbKG053189; Wed, 7 Dec 2022 15:33:37 +0800 (+08) (envelope-from ye.xingchen@zte.com.cn) Received: from mapi (xaxapp01[null]) by mapi (Zmail) with MAPI id mid31; Wed, 7 Dec 2022 15:33:38 +0800 (CST) Date: Wed, 7 Dec 2022 15:33:38 +0800 (CST) X-Zmail-TransId: 2af9639041d2fffffffff4b73c44 X-Mailer: Zmail v1.0 Message-ID: <202212071533389702351@zte.com.cn> Mime-Version: 1.0 From: To: Cc: , , , Subject: =?utf-8?q?=5BPATCH=5D_iio=3A_adc=3A_nau7802=3A_Convert_to_use_sysfs?= =?utf-8?q?=5Femit=5Fat=28=29_API?= X-MAIL: mse-fl2.zte.com.cn 2B77XbKG053189 X-Fangmail-Gw-Spam-Type: 0 X-FangMail-Miltered: at cgslv5.04-192.168.250.137.novalocal with ID 639041DA.001 by FangMail milter! X-FangMail-Envelope: 1670398426/4NRptf6w7qz8QrkZ/639041DA.001/10.5.228.133/[10.5.228.133]/mse-fl2.zte.com.cn/ X-Fangmail-Anti-Spam-Filtered: true X-Fangmail-MID-QID: 639041DA.001/4NRptf6w7qz8QrkZ Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org From: ye xingchen Follow the advice of the Documentation/filesystems/sysfs.rst and show() should only use sysfs_emit() or sysfs_emit_at() when formatting the value to be returned to user space. Signed-off-by: ye xingchen --- drivers/iio/adc/nau7802.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/iio/adc/nau7802.c b/drivers/iio/adc/nau7802.c index c1261ecd400c..4dbf54979733 100644 --- a/drivers/iio/adc/nau7802.c +++ b/drivers/iio/adc/nau7802.c @@ -86,8 +86,7 @@ static ssize_t nau7802_show_scales(struct device *dev, int i, len = 0; for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++) - len += scnprintf(buf + len, PAGE_SIZE - len, "0.%09d ", - st->scale_avail[i]); + len += sysfs_emit_at(buf, len, "0.%09d ", st->scale_avail[i]); buf[len-1] = '\n';