[PATCH v1 1/1] hwrng: core - Replace strlcat() with better alternative

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

strlcpy() and strlcat() are confusing APIs and the former one already
gone from the kernel.

In preparation to kill strlcat() replace it with the better alternative.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/char/hw_random/core.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index aba92d777f72..c789699bd773 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -418,21 +418,21 @@ static ssize_t rng_available_show(struct device *dev,
 				  struct device_attribute *attr,
 				  char *buf)
 {
+	int len = 0;
 	int err;
 	struct hwrng *rng;
 
 	err = mutex_lock_interruptible(&rng_mutex);
 	if (err)
 		return -ERESTARTSYS;
-	buf[0] = '\0';
-	list_for_each_entry(rng, &rng_list, list) {
-		strlcat(buf, rng->name, PAGE_SIZE);
-		strlcat(buf, " ", PAGE_SIZE);
-	}
-	strlcat(buf, "none\n", PAGE_SIZE);
+
+	list_for_each_entry(rng, &rng_list, list)
+		len += sysfs_emit_at(buf, len, "%s ", rng->name);
+	len += sysfs_emit_at(buf, len, "none\n");
+
 	mutex_unlock(&rng_mutex);
 
-	return strlen(buf);
+	return len;
 }
 
 static ssize_t rng_selected_show(struct device *dev,
-- 
2.50.1