From nobody Fri Oct 2 02:32:13 2026 Received: from mail-24431.protonmail.ch (mail-24431.protonmail.ch [109.224.244.31]) (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 B2EAD471D0C for ; Wed, 5 Aug 2026 13:51:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=109.224.244.31 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785937919; cv=none; b=KFA4vs5C7Jc9ceLFFYu62RqC2FmhVqwUEmOIjQp1nocL+mG4VOhxnuxGTTHBfcJu0LSK/n80pUKAV5IKXXZ5VmCY4OI81ce1RSR3YRGR7wc/+S140l8XGpFNsPsNFalIqiezrymGRiD+ALtq/e0Au+dk4gHlevX+fi0tQcca05Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785937919; c=relaxed/simple; bh=Hr4xVAWPpDxP0gJqh+0e/jLhco6EMuXZJGrnnrCipiA=; h=Date:To:From:Cc:Subject:Message-ID:MIME-Version:Content-Type; b=aqwth23+PGVnulW5TPDFVEL6NRqRMP/7zb+jWeKM9+F36w59uK58fkesxggpfDFCzqKYQW+N4HUNRTDNe9xcTCLkckn3vQAJ02g/CEGieCQ0gmFCctxxwDJJwXf7lnxveox7ppDBE/UR7ycJOlvjFF+todkCN6firkS32K9maJQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=proton.me; spf=pass smtp.mailfrom=proton.me; dkim=pass (2048-bit key) header.d=proton.me header.i=@proton.me header.b=X7uo5iM5; arc=none smtp.client-ip=109.224.244.31 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=proton.me Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=proton.me Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=proton.me header.i=@proton.me header.b="X7uo5iM5" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=proton.me; s=6kljpvv6hrglppv5cwl3usy5c4.protonmail; t=1785937905; x=1786197105; bh=chdGDX++TvBPFjBRHN0cQC/MRwsAhgfHznIjcup1gYY=; h=Date:To:From:Cc:Subject:Message-ID:Feedback-ID:From:To:Cc:Date: Subject:Reply-To:Feedback-ID:Message-ID:BIMI-Selector; b=X7uo5iM5/ktQ+sn/4GRGvmnwJW6UqbDVOkRS8oWXVJp8hZKKqIIFErA+wjsYi6BYu KoDKUWlY1aWWj5sA6bXpUhaJsj7erOM78EFrRFWjlKrVefmW3o0duWSaV6rKZbxLIY +CCter+fhZt77Jy8Gu3RTFmR3gEfyYWisSBsbfgFPivqp5oo7Mcpwpflqj3oPYJ4LM mgKUU3h04RbmuZOFStcWOdZUxGRdMkT+NAywJAv7GPYTUKeJZVQvbglG0lqp4WWvQ3 t/XRiL6Vt086Im2uUwuKmNFRcZmXvBAU+B1koEZ+XkzfwzLAkn00yBH/kEM21LXVjv 1noH1sKOjxbnQ== Date: Wed, 05 Aug 2026 13:51:39 +0000 To: lee@kernel.org, danielt@kernel.org From: Levente Szajko Cc: jingoohan1@gmail.com, deller@gmx.de, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, Levente Szajko Subject: [PATCH] video: backlight: Use sysfs_emit() instead of sprintf() Message-ID: <20260805135027.43890-1-raedrimhun@proton.me> Feedback-ID: 100557472:user:proton X-Pm-Message-ID: 72184ef1d741a4d62fd5bcf41e6fb1132ae52a94 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() in the sysfs show callbacks of backlight.c and lcd.c, as recommended by Documentation/filesystems/sysfs.rs= t. No functional change intended. Signed-off-by: Levente Szajko Reviewed-by: Daniel Thompson (RISCstar) --- drivers/video/backlight/backlight.c | 16 ++++++++-------- drivers/video/backlight/lcd.c | 6 +++--- 2 files changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/= backlight.c index a22d0bbb6e63..fc9bb303e8c5 100644 --- a/drivers/video/backlight/backlight.c +++ b/drivers/video/backlight/backlight.c @@ -139,7 +139,7 @@ static ssize_t bl_power_show(struct device *dev, struct= device_attribute *attr, { struct backlight_device *bd =3D to_backlight_device(dev); =20 - return sprintf(buf, "%d\n", bd->props.power); + return sysfs_emit(buf, "%d\n", bd->props.power); } =20 static ssize_t bl_power_store(struct device *dev, struct device_attribute = *attr, @@ -180,7 +180,7 @@ static ssize_t brightness_show(struct device *dev, { struct backlight_device *bd =3D to_backlight_device(dev); =20 - return sprintf(buf, "%d\n", bd->props.brightness); + return sysfs_emit(buf, "%d\n", bd->props.brightness); } =20 int backlight_device_set_brightness(struct backlight_device *bd, @@ -228,7 +228,7 @@ static ssize_t type_show(struct device *dev, struct dev= ice_attribute *attr, { struct backlight_device *bd =3D to_backlight_device(dev); =20 - return sprintf(buf, "%s\n", backlight_types[bd->props.type]); + return sysfs_emit(buf, "%s\n", backlight_types[bd->props.type]); } static DEVICE_ATTR_RO(type); =20 @@ -237,7 +237,7 @@ static ssize_t max_brightness_show(struct device *dev, { struct backlight_device *bd =3D to_backlight_device(dev); =20 - return sprintf(buf, "%d\n", bd->props.max_brightness); + return sysfs_emit(buf, "%d\n", bd->props.max_brightness); } static DEVICE_ATTR_RO(max_brightness); =20 @@ -251,9 +251,9 @@ static ssize_t actual_brightness_show(struct device *de= v, if (bd->ops && bd->ops->get_brightness) { rc =3D bd->ops->get_brightness(bd); if (rc >=3D 0) - rc =3D sprintf(buf, "%d\n", rc); + rc =3D sysfs_emit(buf, "%d\n", rc); } else { - rc =3D sprintf(buf, "%d\n", bd->props.brightness); + rc =3D sysfs_emit(buf, "%d\n", bd->props.brightness); } mutex_unlock(&bd->ops_lock); =20 @@ -267,9 +267,9 @@ static ssize_t scale_show(struct device *dev, struct backlight_device *bd =3D to_backlight_device(dev); =20 if (WARN_ON(bd->props.scale > BACKLIGHT_SCALE_NON_LINEAR)) - return sprintf(buf, "unknown\n"); + return sysfs_emit(buf, "unknown\n"); =20 - return sprintf(buf, "%s\n", backlight_scale_types[bd->props.scale]); + return sysfs_emit(buf, "%s\n", backlight_scale_types[bd->props.scale]); } static DEVICE_ATTR_RO(scale); =20 diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c index e918f57608ef..461e393837d3 100644 --- a/drivers/video/backlight/lcd.c +++ b/drivers/video/backlight/lcd.c @@ -77,7 +77,7 @@ static ssize_t lcd_power_show(struct device *dev, struct = device_attribute *attr, =20 mutex_lock(&ld->ops_lock); if (ld->ops && ld->ops->get_power) - rc =3D sprintf(buf, "%d\n", ld->ops->get_power(ld)); + rc =3D sysfs_emit(buf, "%d\n", ld->ops->get_power(ld)); else rc =3D -ENXIO; mutex_unlock(&ld->ops_lock); @@ -118,7 +118,7 @@ static ssize_t contrast_show(struct device *dev, =20 mutex_lock(&ld->ops_lock); if (ld->ops && ld->ops->get_contrast) - rc =3D sprintf(buf, "%d\n", ld->ops->get_contrast(ld)); + rc =3D sysfs_emit(buf, "%d\n", ld->ops->get_contrast(ld)); mutex_unlock(&ld->ops_lock); =20 return rc; @@ -154,7 +154,7 @@ static ssize_t max_contrast_show(struct device *dev, { struct lcd_device *ld =3D to_lcd_device(dev); =20 - return sprintf(buf, "%d\n", ld->props.max_contrast); + return sysfs_emit(buf, "%d\n", ld->props.max_contrast); } static DEVICE_ATTR_RO(max_contrast); =20 --=20 2.55.0