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https://github.com/torvalds/linux
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leds: use sysfs_emit() to instead of scnprintf()
Replace the open-code with sysfs_emit() to simplify the code. Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn> Signed-off-by: Pavel Machek <pavel@ucw.cz>
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135780f104
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3f6fb1cfaf
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@ -139,11 +139,11 @@ static ssize_t show_color_common(struct device *dev, char *buf, int color)
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return ret;
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switch (color) {
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case RED:
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return scnprintf(buf, PAGE_SIZE, "%02X\n", data->red);
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return sysfs_emit(buf, "%02X\n", data->red);
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case GREEN:
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return scnprintf(buf, PAGE_SIZE, "%02X\n", data->green);
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return sysfs_emit(buf, "%02X\n", data->green);
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case BLUE:
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return scnprintf(buf, PAGE_SIZE, "%02X\n", data->blue);
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return sysfs_emit(buf, "%02X\n", data->blue);
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default:
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return -EINVAL;
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}
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@ -253,7 +253,7 @@ static DEVICE_ATTR_RW(blue);
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static ssize_t test_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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return scnprintf(buf, PAGE_SIZE,
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return sysfs_emit(buf,
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"#Write into test to start test sequence!#\n");
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}
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@ -314,7 +314,7 @@ static ssize_t show_id(struct device *dev,
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struct led_classdev *led_cdev = dev_get_drvdata(dev);
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struct lm3533_led *led = to_lm3533_led(led_cdev);
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return scnprintf(buf, PAGE_SIZE, "%d\n", led->id);
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return sysfs_emit(buf, "%d\n", led->id);
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}
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/*
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@ -344,7 +344,7 @@ static ssize_t show_risefalltime(struct device *dev,
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if (ret)
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return ret;
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return scnprintf(buf, PAGE_SIZE, "%x\n", val);
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return sysfs_emit(buf, "%x\n", val);
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}
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static ssize_t show_risetime(struct device *dev,
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@ -415,7 +415,7 @@ static ssize_t show_als_channel(struct device *dev,
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channel = (val & LM3533_REG_CTRLBANK_BCONF_ALS_CHANNEL_MASK) + 1;
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return scnprintf(buf, PAGE_SIZE, "%u\n", channel);
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return sysfs_emit(buf, "%u\n", channel);
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}
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static ssize_t store_als_channel(struct device *dev,
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@ -465,7 +465,7 @@ static ssize_t show_als_en(struct device *dev,
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enable = val & LM3533_REG_CTRLBANK_BCONF_ALS_EN_MASK;
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return scnprintf(buf, PAGE_SIZE, "%d\n", enable);
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return sysfs_emit(buf, "%d\n", enable);
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}
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static ssize_t store_als_en(struct device *dev,
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@ -518,7 +518,7 @@ static ssize_t show_linear(struct device *dev,
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else
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linear = 0;
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return scnprintf(buf, PAGE_SIZE, "%x\n", linear);
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return sysfs_emit(buf, "%x\n", linear);
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}
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static ssize_t store_linear(struct device *dev,
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@ -564,7 +564,7 @@ static ssize_t show_pwm(struct device *dev,
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if (ret)
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return ret;
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return scnprintf(buf, PAGE_SIZE, "%u\n", val);
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return sysfs_emit(buf, "%u\n", val);
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}
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static ssize_t store_pwm(struct device *dev,
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@ -469,7 +469,7 @@ static ssize_t lp5521_selftest(struct device *dev,
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ret = lp5521_run_selftest(chip, buf);
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mutex_unlock(&chip->lock);
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return scnprintf(buf, PAGE_SIZE, "%s\n", ret ? "FAIL" : "OK");
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return sysfs_emit(buf, "%s\n", ret ? "FAIL" : "OK");
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}
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/* device attributes */
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@ -88,7 +88,7 @@ static ssize_t led_current_show(struct device *dev,
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{
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struct lp55xx_led *led = dev_to_lp55xx_led(dev);
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return scnprintf(buf, PAGE_SIZE, "%d\n", led->led_current);
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return sysfs_emit(buf, "%d\n", led->led_current);
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}
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static ssize_t led_current_store(struct device *dev,
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@ -121,7 +121,7 @@ static ssize_t max_current_show(struct device *dev,
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{
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struct lp55xx_led *led = dev_to_lp55xx_led(dev);
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return scnprintf(buf, PAGE_SIZE, "%d\n", led->max_current);
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return sysfs_emit(buf, "%d\n", led->max_current);
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}
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static DEVICE_ATTR_RW(led_current);
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@ -155,7 +155,7 @@ static ssize_t repeat_show(struct device *dev, struct device_attribute *attr,
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mutex_unlock(&data->lock);
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return scnprintf(buf, PAGE_SIZE, "%d\n", repeat);
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return sysfs_emit(buf, "%d\n", repeat);
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}
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static ssize_t repeat_store(struct device *dev, struct device_attribute *attr,
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