linux-kernel - [PATCH v2 3/4] pwm: sysfs: Replace sprintf() with sysfs

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Message-Id: <20220826170716.6886-3-andriy.shevchenko@linux.intel.com>
Date:   Fri, 26 Aug 2022 20:07:15 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-pwm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Subject: [PATCH v2 3/4] pwm: sysfs: Replace sprintf() with sysfs_emit()

For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
instead of the raw sprintf() & co. This patch replaces such a
sprintf() call straightforwardly with the new helper.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
v2: added tag (Uwe)
 drivers/pwm/sysfs.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/pwm/sysfs.c b/drivers/pwm/sysfs.c
index 1543fe07765b..767c4b19afb1 100644
--- a/drivers/pwm/sysfs.c
+++ b/drivers/pwm/sysfs.c
@@ -42,7 +42,7 @@ static ssize_t period_show(struct device *child,
 
 	pwm_get_state(pwm, &state);
 
-	return sprintf(buf, "%llu\n", state.period);
+	return sysfs_emit(buf, "%llu\n", state.period);
 }
 
 static ssize_t period_store(struct device *child,
@@ -77,7 +77,7 @@ static ssize_t duty_cycle_show(struct device *child,
 
 	pwm_get_state(pwm, &state);
 
-	return sprintf(buf, "%llu\n", state.duty_cycle);
+	return sysfs_emit(buf, "%llu\n", state.duty_cycle);
 }
 
 static ssize_t duty_cycle_store(struct device *child,
@@ -112,7 +112,7 @@ static ssize_t enable_show(struct device *child,
 
 	pwm_get_state(pwm, &state);
 
-	return sprintf(buf, "%d\n", state.enabled);
+	return sysfs_emit(buf, "%d\n", state.enabled);
 }
 
 static ssize_t enable_store(struct device *child,
@@ -171,7 +171,7 @@ static ssize_t polarity_show(struct device *child,
 		break;
 	}
 
-	return sprintf(buf, "%s\n", polarity);
+	return sysfs_emit(buf, "%s\n", polarity);
 }
 
 static ssize_t polarity_store(struct device *child,
@@ -212,7 +212,7 @@ static ssize_t capture_show(struct device *child,
 	if (ret)
 		return ret;
 
-	return sprintf(buf, "%u %u\n", result.period, result.duty_cycle);
+	return sysfs_emit(buf, "%u %u\n", result.period, result.duty_cycle);
 }
 
 static DEVICE_ATTR_RW(period);
@@ -361,7 +361,7 @@ static ssize_t npwm_show(struct device *parent, struct device_attribute *attr,
 {
 	const struct pwm_chip *chip = dev_get_drvdata(parent);
 
-	return sprintf(buf, "%u\n", chip->npwm);
+	return sysfs_emit(buf, "%u\n", chip->npwm);
 }
 static DEVICE_ATTR_RO(npwm);
 
-- 
2.35.1