search for: usb_get_interrupt

...d I'd "clean my own house" first. The problem is that the buffers returned from libusb are all being marked as invalid (the bytes themselves, not the address). I see at least two solutions to this: 1) Clear all buffers to zero before calling libusb functions that write to a buffer (usb_get_interrupt, usb_get_string*, usb_control_msg, etc.) 2) Mark the valid portions of the buffer after the libusb call with VALGRIND_MAKE_READABLE. The big advantage of the first method is that it keeps the code looking clean, and means we don't have to do any conditional inclusion of valgrind's memchec...