On Sun, Nov 28, 2004 at 11:03:11PM +0100, Manfred Spraul wrote: > Hi pavel,
My name is Vojtech. ;) > CHECK_OWNERSHIP in drivers/usb/input/hid-tmff.c tests for > current->pid==0. The same code is used in several files (hid-lgff.c, > usb/input/pid.c, drivers/input/joystick/iforce/iforce.h) > Do you know why? I don't understand the reason for the test. > There are two cases where current->pid is 0: for the idle thread(s) and > historically for dead threads (not true anymore). current can't be dead > and I don't think that it makes sense to check if current is an idle thread. I think it's to check whether there is a process associated with the device, with 0 being a special value "no process". -- Vojtech Pavlik SuSE Labs, SuSE CR ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
