ausb_bulk_read may lose data when timing out. We therefore try to
minimize the number of times we time out. Reading until no more
interrupts arrive may have looked like a good idea, but it just
causes trouble for now.
- lib/atrf.c (atrf_interrupt_wait): interrupt_wait is no longer
optional
- atrf-proxy/atrf-proxy.c (cmd_more): we no longer need to handle
atrf_interrupt_wait being unsupported
- lib/atusb-common.c (atusb_interrupt_wait): clarify what we don't
want to return -1 on error
- atusb-common.c (atusb_open): claim interface, so that we can do bulk
I/O without complaints from the kernel
- atusb-common.h (atusb_interrupt_wait), atusb-common.c: blocking read
for interrupt status byte on EP1
- atusb.c (atusb_driver), atusb-spi.c (atusb_spi_driver): provide the
interrupt_wait operation
