From patchwork Wed Sep 28 01:41:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ye xingchen X-Patchwork-Id: 12991658 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6E9F1C04A95 for ; Wed, 28 Sep 2022 06:31:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id ABBED10E283; Wed, 28 Sep 2022 06:31:01 +0000 (UTC) Received: from mail-pf1-x429.google.com (mail-pf1-x429.google.com [IPv6:2607:f8b0:4864:20::429]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5188C10E037 for ; Wed, 28 Sep 2022 01:41:24 +0000 (UTC) Received: by mail-pf1-x429.google.com with SMTP id y136so11244628pfb.3 for ; Tue, 27 Sep 2022 18:41:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date; bh=eAwgA8BGMVVMxNp7JTXLjpsmeLFwCAL7NP0XLkLYUBE=; b=kNzBXFh17EpTe4Zm/ykApJYQG1VxxzwJhYHGO2Q7jLKFkEmSQNED69jo+lGj6MsB/i JWn9VNX8ZgzEfXwbHmxTs1PxHZ7SBp7w/WDc6DjmteAEORlcatEdAqoOK3HvQptCy/fT 61ZrQxTzq0lHt5lMIPqgGTuecVT+r/BuBw/ifkRLgFDoTy3l4sQ7fpZgIodAS0c8KjNJ dCHSIkQFF82Wd/gKighQpP3aBKrC7hymDevYMe/n5HpkBPMYwlqL0QrPsDwsOhTex7TC W5E+sNcugFEEZB+50Txc6Y4MBQdhIGJcrVvqzG3rFMBYmMX1i44gzCYHoLByO0LSlr1C qosw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date; bh=eAwgA8BGMVVMxNp7JTXLjpsmeLFwCAL7NP0XLkLYUBE=; b=bQ8kB5vZtVSu6VPAbOStutwxd0bcuc63B9OENVX/VpXSzMfxCycozJGnW3/+/D83DK pfGHMXZEX5TTl3N0R7DICLOQRXPHtY6R4H0CiRv3HBlYyi6GJRbypq7TL/1eJj+rrwea a0chPeFW+3ZOZr7TpvSUAKEx/RO6b6He+fdKQfhJpKVMqHS3HlAhIMlqn/N3g6oeJyGF hvdariZOxMvQ15FXyVUkj/Pb4N8G0zCv4C8fgMBFpsHzJ6z4a+wQiV/ehht4890O0d+i h1XxTCKuoGAfwRfmq+u2d+JAeVorTPKr0/7zt4sGdg+vfz9mInR5qo7B8agDR2rJpAr4 gmhw== X-Gm-Message-State: ACrzQf0nVbGOPxgfBWgGy6y9dcKd60lT5bhBnnbFO4o90i7kaPmeyTGH HwOeZyHnj4FUj/6eYgU8yBw= X-Google-Smtp-Source: AMsMyM6KFgNRR2OZXGm1nYTwzsxxG1ueDqktGrPUjgpkdhgBtOMApvbIh2x6bSImTsuWTbLiAZ/Qqg== X-Received: by 2002:a05:6a00:acc:b0:530:e79e:fc27 with SMTP id c12-20020a056a000acc00b00530e79efc27mr32313608pfl.61.1664329283732; Tue, 27 Sep 2022 18:41:23 -0700 (PDT) Received: from localhost.localdomain ([193.203.214.57]) by smtp.gmail.com with ESMTPSA id k13-20020a170902c40d00b00176d218889esm2272516plk.228.2022.09.27.18.41.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Sep 2022 18:41:23 -0700 (PDT) From: yexingchen116@gmail.com X-Google-Original-From: ye.xingchen@zte.com.cn To: jingoohan1@gmail.com Subject: [PATCH linux-next v2] backlight: use sysfs_emit() to instead of scnprintf() Date: Wed, 28 Sep 2022 01:41:15 +0000 Message-Id: <20220928014115.261470-1-ye.xingchen@zte.com.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Mailman-Approved-At: Wed, 28 Sep 2022 06:30:59 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: daniel.thompson@linaro.org, ye xingchen , deller@gmx.de, lee@kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: ye xingchen Replace the open-code with sysfs_emit() to simplify the code. Signed-off-by: ye xingchen --- v1 -> v2 Add the rest of this fixes for this pattern in the 'drivers/video/backlight' directory. drivers/video/backlight/lm3533_bl.c | 10 +++++----- drivers/video/backlight/lp855x_bl.c | 4 ++-- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c index 1df1b6643c0b..5e2ce9285245 100644 --- a/drivers/video/backlight/lm3533_bl.c +++ b/drivers/video/backlight/lm3533_bl.c @@ -66,7 +66,7 @@ static ssize_t show_id(struct device *dev, { struct lm3533_bl *bl = dev_get_drvdata(dev); - return scnprintf(buf, PAGE_SIZE, "%d\n", bl->id); + return sysfs_emit(buf, "%d\n", bl->id); } static ssize_t show_als_channel(struct device *dev, @@ -75,7 +75,7 @@ static ssize_t show_als_channel(struct device *dev, struct lm3533_bl *bl = dev_get_drvdata(dev); unsigned channel = lm3533_bl_get_ctrlbank_id(bl); - return scnprintf(buf, PAGE_SIZE, "%u\n", channel); + return sysfs_emit(buf, "%u\n", channel); } static ssize_t show_als_en(struct device *dev, @@ -95,7 +95,7 @@ static ssize_t show_als_en(struct device *dev, mask = 1 << (2 * ctrlbank); enable = val & mask; - return scnprintf(buf, PAGE_SIZE, "%d\n", enable); + return sysfs_emit(buf, "%d\n", enable); } static ssize_t store_als_en(struct device *dev, @@ -147,7 +147,7 @@ static ssize_t show_linear(struct device *dev, else linear = 0; - return scnprintf(buf, PAGE_SIZE, "%x\n", linear); + return sysfs_emit(buf, "%x\n", linear); } static ssize_t store_linear(struct device *dev, @@ -190,7 +190,7 @@ static ssize_t show_pwm(struct device *dev, if (ret) return ret; - return scnprintf(buf, PAGE_SIZE, "%u\n", val); + return sysfs_emit(buf, "%u\n", val); } static ssize_t store_pwm(struct device *dev, diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c index bd0bdeae23a4..fafc1a9e76ef 100644 --- a/drivers/video/backlight/lp855x_bl.c +++ b/drivers/video/backlight/lp855x_bl.c @@ -293,7 +293,7 @@ static ssize_t lp855x_get_chip_id(struct device *dev, { struct lp855x *lp = dev_get_drvdata(dev); - return scnprintf(buf, PAGE_SIZE, "%s\n", lp->chipname); + return sysfs_emit(buf, "%s\n", lp->chipname); } static ssize_t lp855x_get_bl_ctl_mode(struct device *dev, @@ -307,7 +307,7 @@ static ssize_t lp855x_get_bl_ctl_mode(struct device *dev, else if (lp->mode == REGISTER_BASED) strmode = "register based"; - return scnprintf(buf, PAGE_SIZE, "%s\n", strmode); + return sysfs_emit(buf, "%s\n", strmode); } static DEVICE_ATTR(chip_id, S_IRUGO, lp855x_get_chip_id, NULL);