From patchwork Tue Dec 6 07:19:45 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: 631350 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 ECDC2C3A5A7 for ; Tue, 6 Dec 2022 07:19:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230348AbiLFHT4 (ORCPT ); Tue, 6 Dec 2022 02:19:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52332 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230280AbiLFHTy (ORCPT ); Tue, 6 Dec 2022 02:19:54 -0500 Received: from mxhk.zte.com.cn (mxhk.zte.com.cn [63.216.63.40]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6AB2FD3F; Mon, 5 Dec 2022 23:19:52 -0800 (PST) Received: from mse-fl1.zte.com.cn (unknown [10.5.228.132]) (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 4NRBd314QDz8RV7N; Tue, 6 Dec 2022 15:19:51 +0800 (CST) Received: from xaxapp01.zte.com.cn ([10.88.40.50]) by mse-fl1.zte.com.cn with SMTP id 2B67JgBu008998; Tue, 6 Dec 2022 15:19:42 +0800 (+08) (envelope-from ye.xingchen@zte.com.cn) Received: from mapi (xaxapp01[null]) by mapi (Zmail) with MAPI id mid31; Tue, 6 Dec 2022 15:19:45 +0800 (CST) Date: Tue, 6 Dec 2022 15:19:45 +0800 (CST) X-Zmail-TransId: 2af9638eed11ffffffff8d6e0d5a X-Mailer: Zmail v1.0 Message-ID: <202212061519451024396@zte.com.cn> Mime-Version: 1.0 From: To: Cc: , , Subject: =?utf-8?q?=5BPATCH=5D_ACPI=3A_fan=3A_Convert_to_use_sysfs=5Femit=5F?= =?utf-8?q?at=28=29_API?= X-MAIL: mse-fl1.zte.com.cn 2B67JgBu008998 X-Fangmail-Gw-Spam-Type: 0 X-FangMail-Miltered: at cgslv5.04-192.168.250.137.novalocal with ID 638EED17.000 by FangMail milter! X-FangMail-Envelope: 1670311191/4NRBd314QDz8RV7N/638EED17.000/10.5.228.132/[10.5.228.132]/mse-fl1.zte.com.cn/ X-Fangmail-Anti-Spam-Filtered: true X-Fangmail-MID-QID: 638EED17.000/4NRBd314QDz8RV7N Precedence: bulk List-ID: X-Mailing-List: linux-acpi@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/acpi/fan_attr.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/acpi/fan_attr.c b/drivers/acpi/fan_attr.c index f15157d40713..f4f6e2381f1d 100644 --- a/drivers/acpi/fan_attr.c +++ b/drivers/acpi/fan_attr.c @@ -27,24 +27,24 @@ static ssize_t show_state(struct device *dev, struct device_attribute *attr, cha count = scnprintf(buf, PAGE_SIZE, "%lld:", fps->control); if (fps->trip_point == 0xFFFFFFFF || fps->trip_point > 9) - count += scnprintf(&buf[count], PAGE_SIZE - count, "not-defined:"); + count += sysfs_emit_at(buf, count, "not-defined:"); else - count += scnprintf(&buf[count], PAGE_SIZE - count, "%lld:", fps->trip_point); + count += sysfs_emit_at(buf, count, "%lld:", fps->trip_point); if (fps->speed == 0xFFFFFFFF) - count += scnprintf(&buf[count], PAGE_SIZE - count, "not-defined:"); + count += sysfs_emit_at(buf, count, "not-defined:"); else - count += scnprintf(&buf[count], PAGE_SIZE - count, "%lld:", fps->speed); + count += sysfs_emit_at(buf, count, "%lld:", fps->speed); if (fps->noise_level == 0xFFFFFFFF) - count += scnprintf(&buf[count], PAGE_SIZE - count, "not-defined:"); + count += sysfs_emit_at(buf, count, "not-defined:"); else - count += scnprintf(&buf[count], PAGE_SIZE - count, "%lld:", fps->noise_level * 100); + count += sysfs_emit_at(buf, count, "%lld:", fps->noise_level * 100); if (fps->power == 0xFFFFFFFF) - count += scnprintf(&buf[count], PAGE_SIZE - count, "not-defined\n"); + count += sysfs_emit_at(buf, count, "not-defined\n"); else - count += scnprintf(&buf[count], PAGE_SIZE - count, "%lld\n", fps->power); + count += sysfs_emit_at(buf, count, "%lld\n", fps->power); return count; }