OPP: switch to use kmemdup_array()

Use kmemdup_array() to avoid multiplication and possible overflows.

Signed-off-by: Zhang Enpei <zhang.enpei@zte.com.cn>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 72fbb6cadc23d2a60dea0c4559850c01df5cf587..edbd60501cf00dfd1957f7d19b228d1c61bbbdcc 100644 (file)
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -2087,8 +2087,8 @@ static int _opp_set_supported_hw(struct opp_table *opp_table,
        if (opp_table->supported_hw)
                return 0;
 
-       opp_table->supported_hw = kmemdup(versions, count * sizeof(*versions),
-                                       GFP_KERNEL);
+       opp_table->supported_hw = kmemdup_array(versions, count,
+                                               sizeof(*versions), GFP_KERNEL);
        if (!opp_table->supported_hw)
                return -ENOMEM;