ioctl(LPGETSTATUS) is known to put the status into  an  int.  The  usblp
driver has a problem in this area as it does not put it into an int  but
into a char. Let's see :

from drivers/char/lp.c : lp_ioctl :
    int status
    copy_to_user((int *) arg, &status, sizeof(int))

from drivers/usb/printer.c : usblp_ioctl :
    unsigned char status;
    copy_to_user ((unsigned char *)arg, &status, 1)

Even though in  most  cases  it  can  work  unnoticed  on  little-endian
machines ;o), it's broken on non-little-endian machines (I got bitten on
PPC).