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Date: Mon, 09 Apr 2012 10:11:06 -0600
From: Shuah Khan <shuahkhan@...il.com>
To: Joe Perches <joe@...ches.com>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: shuahkhan@...il.com, LKML <linux-kernel@...r.kernel.org>,
rpurdie@...ux.intel.com
Subject: Re: [PATCH v2] leds: simple_strtoul-cleanup
led-class.c and ledtri-timer.c still use simple_strtoul().
Change leds to use kstrtoul() instead of obsolete simple_strtoul().
This patch version addresses Joe's review comment. Added returning -EINVAL
in error paths back in. Also fixed existing int ret declaration to be ssize_t
to match the return type for _store functions in ledtrig-timer.c
>From 411bd03d4327d210595264c39f71e6f446ac0f90 Mon Sep 17 00:00:00 2001
From: Shuah Khan <shuahkhan@...il.com>
Date: Mon, 9 Apr 2012 09:05:07 -0600
Subject: [PATCH] leds: simple_strtoul-cleanup
Signed-off-by: Shuah Khan <shuahkhan@...il.com>
---
drivers/leds/led-class.c | 21 ++++++++-------------
drivers/leds/ledtrig-timer.c | 40 ++++++++++++++++------------------------
2 files changed, 24 insertions(+), 37 deletions(-)
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index 5bff843..8ee92c8 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -44,23 +44,18 @@ static ssize_t led_brightness_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
+ unsigned long state;
ssize_t ret = -EINVAL;
- char *after;
- unsigned long state = simple_strtoul(buf, &after, 10);
- size_t count = after - buf;
- if (isspace(*after))
- count++;
+ ret = kstrtoul(buf, 10, &state);
+ if (ret)
+ return ret;
- if (count == size) {
- ret = count;
+ if (state == LED_OFF)
+ led_trigger_remove(led_cdev);
+ led_set_brightness(led_cdev, state);
- if (state == LED_OFF)
- led_trigger_remove(led_cdev);
- led_set_brightness(led_cdev, state);
- }
-
- return ret;
+ return size;
}
static ssize_t led_max_brightness_show(struct device *dev,
diff --git a/drivers/leds/ledtrig-timer.c b/drivers/leds/ledtrig-timer.c
index 328c64c..b32d5ea 100644
--- a/drivers/leds/ledtrig-timer.c
+++ b/drivers/leds/ledtrig-timer.c
@@ -31,21 +31,17 @@ static ssize_t led_delay_on_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
- int ret = -EINVAL;
- char *after;
- unsigned long state = simple_strtoul(buf, &after, 10);
- size_t count = after - buf;
-
- if (isspace(*after))
- count++;
-
- if (count == size) {
- led_blink_set(led_cdev, &state, &led_cdev->blink_delay_off);
- led_cdev->blink_delay_on = state;
- ret = count;
- }
+ unsigned long state;
+ ssize_t ret = -EINVAL;
+
+ ret = kstrtoul(buf, 10, &state);
+ if (ret)
+ return ret;
+
+ led_blink_set(led_cdev, &state, &led_cdev->blink_delay_off);
+ led_cdev->blink_delay_on = state;
- return ret;
+ return size;
}
static ssize_t led_delay_off_show(struct device *dev,
@@ -60,21 +56,17 @@ static ssize_t led_delay_off_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
- int ret = -EINVAL;
- char *after;
- unsigned long state = simple_strtoul(buf, &after, 10);
- size_t count = after - buf;
-
- if (isspace(*after))
- count++;
-
- if (count == size) {
- led_blink_set(led_cdev, &led_cdev->blink_delay_on, &state);
- led_cdev->blink_delay_off = state;
- ret = count;
- }
+ unsigned long state;
+ ssize_t ret = -EINVAL;
+
+ ret = kstrtoul(buf, 10, &state);
+ if (ret)
+ return ret;
+
+ led_blink_set(led_cdev, &led_cdev->blink_delay_on, &state);
+ led_cdev->blink_delay_off = state;
- return ret;
+ return size;
}
static DEVICE_ATTR(delay_on, 0644, led_delay_on_show, led_delay_on_store);
--
1.7.5.4
--
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