regmap: Switch to use kmemdup_array()

Let the kememdup_array() take care about multiplication and possible
overflows.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240606164717.3031107-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 0a34dd3c4f38d298b8766065026cc465801f7aa7..88c02b71b2ee125c806c4f4f0df526a2baec790d 100644 (file)
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2347,7 +2347,7 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
        } else {
                void *wval;
 
-               wval = kmemdup(val, val_count * val_bytes, map->alloc_flags);
+               wval = kmemdup_array(val, val_count, val_bytes, map->alloc_flags);
                if (!wval)
                        return -ENOMEM;