[PATCH] backlight: use kstrtoul

From: Jingoo Han
Date: Fri Dec 23 2011 - 02:53:18 EST


The usage of simple_strtoul or strict_strtoul is not preferred. Thus,
kstrtoul should be used.

This patch also fixes checkpatch error as follows:
ERROR: space required after that ',' (ctx:VxV)

Signed-off-by: Jingoo Han <jg1.han@xxxxxxxxxxx>
---
drivers/video/backlight/backlight.c | 6 +++---
drivers/video/backlight/lcd.c | 26 ++++++++++----------------
2 files changed, 13 insertions(+), 19 deletions(-)

diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 7363c1b..bf5b1ec 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -102,7 +102,7 @@ static void backlight_generate_event(struct backlight_device *bd,
}

static ssize_t backlight_show_power(struct device *dev,
- struct device_attribute *attr,char *buf)
+ struct device_attribute *attr, char *buf)
{
struct backlight_device *bd = to_backlight_device(dev);

@@ -116,7 +116,7 @@ static ssize_t backlight_store_power(struct device *dev,
struct backlight_device *bd = to_backlight_device(dev);
unsigned long power;

- rc = strict_strtoul(buf, 0, &power);
+ rc = kstrtoul(buf, 0, &power);
if (rc)
return rc;

@@ -150,7 +150,7 @@ static ssize_t backlight_store_brightness(struct device *dev,
struct backlight_device *bd = to_backlight_device(dev);
unsigned long brightness;

- rc = strict_strtoul(buf, 0, &brightness);
+ rc = kstrtoul(buf, 0, &brightness);
if (rc)
return rc;

diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index 71a11ca..79c1b0d 100644
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -97,19 +97,16 @@ static ssize_t lcd_store_power(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int rc = -ENXIO;
- char *endp;
struct lcd_device *ld = to_lcd_device(dev);
- int power = simple_strtoul(buf, &endp, 0);
- size_t size = endp - buf;
+ unsigned long power;

- if (isspace(*endp))
- size++;
- if (size != count)
- return -EINVAL;
+ rc = kstrtoul(buf, 0, &power);
+ if (rc)
+ return rc;

mutex_lock(&ld->ops_lock);
if (ld->ops && ld->ops->set_power) {
- pr_debug("lcd: set power to %d\n", power);
+ pr_debug("lcd: set power to %lu\n", power);
ld->ops->set_power(ld, power);
rc = count;
}
@@ -136,19 +133,16 @@ static ssize_t lcd_store_contrast(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int rc = -ENXIO;
- char *endp;
struct lcd_device *ld = to_lcd_device(dev);
- int contrast = simple_strtoul(buf, &endp, 0);
- size_t size = endp - buf;
+ unsigned long contrast;

- if (isspace(*endp))
- size++;
- if (size != count)
- return -EINVAL;
+ rc = kstrtoul(buf, 0, &contrast);
+ if (rc)
+ return rc;

mutex_lock(&ld->ops_lock);
if (ld->ops && ld->ops->set_contrast) {
- pr_debug("lcd: set contrast to %d\n", contrast);
+ pr_debug("lcd: set contrast to %lu\n", contrast);
ld->ops->set_contrast(ld, contrast);
rc = count;
}
--
1.7.1


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