On Tue, Dec 02, 2014 at 03:29:23PM -0800, Dmitry Torokhov wrote:
> On Tue, Dec 02, 2014 at 10:15:29PM +0530, Aniroop Mathur wrote:
> > This patch initializes input_no by -1 in order to avoid extra subtraction
> > operation performed everytime for allocation of an input device.
> >
> > Signed-off-by: Aniroop Mathur <[email protected]>
>
> Applied, thank you.
>
> By the way, we have a few more places in drivers/input that count from 0, we
> may want to change them as well.
Also, for patches of such nature (non urgent) there is no need to ping me so
often.
Thanks.
>
> > ---
> > drivers/input/input.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/input/input.c b/drivers/input/input.c
> > index 29ca0bb..01fe49e 100644
> > --- a/drivers/input/input.c
> > +++ b/drivers/input/input.c
> > @@ -1774,7 +1774,7 @@ EXPORT_SYMBOL_GPL(input_class);
> > */
> > 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);
> > @@ -1789,7 +1789,7 @@ struct input_dev *input_allocate_device(void)
> > INIT_LIST_HEAD(&dev->node);
> >
> > dev_set_name(&dev->dev, "input%ld",
> > - (unsigned long) atomic_inc_return(&input_no) - 1);
> > + (unsigned long) atomic_inc_return(&input_no));
> >
> > __module_get(THIS_MODULE);
> > }
> > --
> > 1.9.1
> >
>
> Thanks.
>
> --
> Dmitry
--
Dmitry
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