[PATCH] xf86drm.c: add counter for ioctl restarting

[Anton V. Boyarshinov]

Hi
 
> Obviously if we have a dead gpu, we need to break out of this loop. But
> detecting a dead gpu (and returning an appropriate error like EIO) is the
> kernel's job.
In my case gpu isn't really dead. It works after some ioctl skip. I
understend that it is a driver bug in any case, but i thing that working
around this bugs with proper logging (absent in this patch) much better
than lockup.

Regards,
Anton