diff options
Diffstat (limited to 'drivers/char/hw_random/core.c')
| -rw-r--r-- | drivers/char/hw_random/core.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c index aa30a25c8d49..1500cfd799a7 100644 --- a/drivers/char/hw_random/core.c +++ b/drivers/char/hw_random/core.c @@ -281,7 +281,6 @@ static ssize_t hwrng_attr_available_show(struct device *dev, char *buf) { int err; - ssize_t ret = 0; struct hwrng *rng; err = mutex_lock_interruptible(&rng_mutex); @@ -289,16 +288,13 @@ static ssize_t hwrng_attr_available_show(struct device *dev, return -ERESTARTSYS; buf[0] = '\0'; list_for_each_entry(rng, &rng_list, list) { - strncat(buf, rng->name, PAGE_SIZE - ret - 1); - ret += strlen(rng->name); - strncat(buf, " ", PAGE_SIZE - ret - 1); - ret++; + strlcat(buf, rng->name, PAGE_SIZE); + strlcat(buf, " ", PAGE_SIZE); } - strncat(buf, "\n", PAGE_SIZE - ret - 1); - ret++; + strlcat(buf, "\n", PAGE_SIZE); mutex_unlock(&rng_mutex); - return ret; + return strlen(buf); } static DEVICE_ATTR(rng_current, S_IRUGO | S_IWUSR, |