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: 12991551 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 857B8C07E9D for ; Wed, 28 Sep 2022 01:41:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229771AbiI1Bl0 (ORCPT ); Tue, 27 Sep 2022 21:41:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51342 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231684AbiI1BlZ (ORCPT ); Tue, 27 Sep 2022 21:41:25 -0400 Received: from mail-pf1-x42c.google.com (mail-pf1-x42c.google.com [IPv6:2607:f8b0:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5A9451BB6C0; Tue, 27 Sep 2022 18:41:24 -0700 (PDT) Received: by mail-pf1-x42c.google.com with SMTP id 9so11191277pfz.12; 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=GzsgEOczpiQV0i19paP3KH8D56wrYrDPV6JkULmm4mFXV6pVG4qQ8AiV+fAN4+LnKD OVGwZ1iWeBxabGGsrcC69vEWaGcoQT8CEUM1mphuXBcD9Jm5Et1x0F5qoBJljrMwJf52 wLo8yql2Sbh8YLLxriC4Lc4WMa/u0pbYJ2W5a9wn4O+PHAQDybTvPgAr5xhnhTwKKhd+ R5YxajJw+IaIfiZpFJxYteqWi23zJY19t8o4A0f3go4b8AN9hEq4FmumARWNROK4dGBM 5BFTBa4B6PqtrRc5O1HLTwe3G6dQICjlQe8h5048g64S1viqhFY/OQ6gCpcyKRXroHGM MsFw== X-Gm-Message-State: ACrzQf3C48qlq94ihJZUuZLJaCVVE1pCOR01E0VHNUc9+ZdVbspUrANQ 2/i7fBUcHbDwDDwWyz9b3zU= 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 Cc: lee@kernel.org, daniel.thompson@linaro.org, deller@gmx.de, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, ye xingchen 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 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org 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);