Let's initializes input_no to -1 in order to avoid extra subtraction
operation performed every time we allocate an input device.
Signed-off-by: Aniroop Mathur <aniroop.mathur@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
*/
struct input_dev *input_allocate_device(void)
{
- static atomic_t input_no = ATOMIC_INIT(0);
+ static atomic_t input_no = ATOMIC_INIT(-1);
struct input_dev *dev;
dev = kzalloc(sizeof(struct input_dev), GFP_KERNEL);
INIT_LIST_HEAD(&dev->node);
dev_set_name(&dev->dev, "input%lu",
- (unsigned long) atomic_inc_return(&input_no) - 1);
+ (unsigned long)atomic_inc_return(&input_no));
__module_get(THIS_MODULE);
}