(Reminder) Re: linuxppc-2.5 (rsync mvista) -- drivers/input/evdev.c:243: error: invalid lvalue in asm statement

Miles Lane miles.lane at comcast.net
Thu Aug 14 05:57:53 EST 2003

Paul Mackerras writes:

> Benjamin Herrenschmidt writes:
> > It's still totally wrong to access userland with a variable sized
> > data since my understanding is that userland doesn't know what size
> > the kernel will use for access here, thus it works for little endian
> > but not big endian (well... afaik).
> The userland data isn't variable-sized; it's an int, and it is
> accessed as an int because the pointer given to get_user is int *.
> The problem is (as Franz pointed out) the use of (a? b: c) as an
> lvalue.
> Incidentally there is a bug in the INPUT_KEYCODE macro: the second
> (dev->keycodesize == 1) should be == 2 instead (the condition for the
> u16 case).

This problem is still around in linuxppc-2.5.


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