Use sysfs_emit() instead of sprintf() in sysfs show attributes (fade_##__dir##_show and color_show). sysfs_emit() is specifically designed for sysfs attributes, is PAGE_SIZE-aware, and avoids potential buffer overflows.
Signed-off-by: Platon Miller platon.ksenzenkokk@gmail.com --- drivers/staging/greybus/light.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/greybus/light.c b/drivers/staging/greybus/light.c index cab02b5da..2689f9a75 100644 --- a/drivers/staging/greybus/light.c +++ b/drivers/staging/greybus/light.c @@ -173,7 +173,7 @@ static ssize_t fade_##__dir##_show(struct device *dev, \ struct led_classdev *cdev = dev_get_drvdata(dev); \ struct gb_channel *channel = get_channel_from_cdev(cdev); \ \ - return sprintf(buf, "%u\n", channel->fade_##__dir); \ + return sysfs_emit(buf, "%u\n", channel->fade_##__dir); \ } \ \ static ssize_t fade_##__dir##_store(struct device *dev, \ @@ -220,7 +220,7 @@ static ssize_t color_show(struct device *dev, struct device_attribute *attr, struct led_classdev *cdev = dev_get_drvdata(dev); struct gb_channel *channel = get_channel_from_cdev(cdev);
- return sprintf(buf, "0x%08x\n", channel->color); + return sysfs_emit(buf, "0x%08x\n", channel->color); }
static ssize_t color_store(struct device *dev, struct device_attribute *attr,