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| author | Richard Purdie <rpurdie@rpsys.net> | 2006-05-15 09:44:17 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-05-15 11:20:56 -0700 |
| commit | 3dc7b82ea7649356bf027fba50c16ca50cec31e2 (patch) | |
| tree | 52bb14b8021c851d6cbd765f74aafa6c33ea631e /drivers/leds/led-class.c | |
| parent | 263de9b582b0f9b6ad5a0651b7df884fe80d6c3c (diff) | |
| download | lwn-3dc7b82ea7649356bf027fba50c16ca50cec31e2.tar.gz lwn-3dc7b82ea7649356bf027fba50c16ca50cec31e2.zip | |
[PATCH] LED: Fix sysfs store function error handling
Fix the error handling of some LED _store functions. This corrects them to
return -EINVAL if the value is not numeric with an optional byte of trailing
whitespace.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/leds/led-class.c')
| -rw-r--r-- | drivers/leds/led-class.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index b0b5d05fadd6..c75d0ef1609c 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c @@ -19,6 +19,7 @@ #include <linux/sysdev.h> #include <linux/timer.h> #include <linux/err.h> +#include <linux/ctype.h> #include <linux/leds.h> #include "leds.h" @@ -43,9 +44,13 @@ static ssize_t led_brightness_store(struct class_device *dev, ssize_t ret = -EINVAL; char *after; unsigned long state = simple_strtoul(buf, &after, 10); + size_t count = after - buf; - if (after - buf > 0) { - ret = after - buf; + if (*after && isspace(*after)) + count++; + + if (count == size) { + ret = count; led_set_brightness(led_cdev, state); } |