wpan-phy: use snprintf to limit the amount of chars written

Use snprintf to limit the amount of chars put in the buffer for attr -> show.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>

diff --git a/net/ieee802154/wpan-class.c b/net/ieee802154/wpan-class.c
index a10ae5b..68ccde6 100644 (file)
--- a/net/ieee802154/wpan-class.c
+++ b/net/ieee802154/wpan-class.c
@@ -30,7 +30,7 @@ static ssize_t name ## _show(struct device *dev,                      \
        int ret;                                                        \
                                                                        \
        mutex_lock(&phy->pib_lock);                                     \
-       ret = sprintf(buf, format_string "\n", args);                   \
+       ret = snprintf(buf, PAGE_SIZE, format_string "\n", args);       \
        mutex_unlock(&phy->pib_lock);                                   \
        return ret;                                                     \
 }