Re: [PATCH] Input: evdev - add ioctl cmd EVIOCGBUFSIZE to get buffer size

[One Thousand Gnomes]

On Sat, 9 Jan 2016 01:50:42 +0530
Aniroop Mathur <aniroop.mathur@xxxxxxxxx> wrote:

> On Sat, Jan 9, 2016 at 1:43 AM, One Thousand Gnomes
> <gnomes@xxxxxxxxxxxxxxxxxxx> wrote:
> >> During system boot up, user space buf size is fixed, it cannot be
> >> resized later and we cannot choose by hit&trial.
> >> struct input_event* mBuffer = new input_event[mBuf];
> >
> > Who says that won't change ? Imagine a future case where plugging in a
> > device changes the buffer size ?
> >
> 
> Ofcourse buffer size can be changed but it will also change the value of bufsize
> variable and accordingly user space client should also change its buf size.

If its hot plugged why shouldn't that value change dynamically after
you've asked ?

Alan