On Thu, Mar 14, 2013 at 5:19 PM, Kim, Milo <Milo.Kim@xxxxxx> wrote:
> According to a sysfs documentation(Documentation/filesystem/sysfs.txt),
> scnprintf() should be used in a read operation method.
> It guarantees safe buffer size(PAGE_SIZE) which is allocated by the sysfs.
>
Oh, I missed that. Great, I merged it.
Thanks,
-Bryan
> Signed-off-by: Milo(Woogyom) Kim <milo.kim@xxxxxx>
> ---
> drivers/leds/leds-lp5521.c | 3 ++-
> drivers/leds/leds-lp55xx-common.c | 4 ++--
> 2 files changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
> index 1001347..7f10304 100644
> --- a/drivers/leds/leds-lp5521.c
> +++ b/drivers/leds/leds-lp5521.c
> @@ -360,7 +360,8 @@ static ssize_t lp5521_selftest(struct device *dev,
> mutex_lock(&chip->lock);
> ret = lp5521_run_selftest(chip, buf);
> mutex_unlock(&chip->lock);
> - return sprintf(buf, "%s\n", ret ? "FAIL" : "OK");
> +
> + return scnprintf(buf, PAGE_SIZE, "%s\n", ret ? "FAIL" : "OK");
> }
>
> /* device attributes */
> diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
> index 8a388a4..715a602 100644
> --- a/drivers/leds/leds-lp55xx-common.c
> +++ b/drivers/leds/leds-lp55xx-common.c
> @@ -80,7 +80,7 @@ static ssize_t lp55xx_show_current(struct device *dev,
> {
> struct lp55xx_led *led = dev_to_lp55xx_led(dev);
>
> - return sprintf(buf, "%d\n", led->led_current);
> + return scnprintf(buf, PAGE_SIZE, "%d\n", led->led_current);
> }
>
> static ssize_t lp55xx_store_current(struct device *dev,
> @@ -113,7 +113,7 @@ static ssize_t lp55xx_show_max_current(struct device *dev,
> {
> struct lp55xx_led *led = dev_to_lp55xx_led(dev);
>
> - return sprintf(buf, "%d\n", led->max_current);
> + return scnprintf(buf, PAGE_SIZE, "%d\n", led->max_current);
> }
>
> static DEVICE_ATTR(led_current, S_IRUGO | S_IWUSR, lp55xx_show_current,
> --
> 1.7.9.5
>
>
> Best Regards,
> Milo
>
>
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