Merge tag 'usb-serial-4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...

Merge tag 'usb-serial-4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for v4.12-rc2

Here's a fix for a long-standing issue in the ftdi_sio driver that
prevented unprivileged users from updating the low-latency flag,
something which became apparent after a recent change that restored the
older setting of not using low-latency mode by default.

A run of sparse revealed a couple of endianness issues that are now
fixed, and addressed is also a user-triggerable division-by-zero in
io_ti when debugging is enabled.

Finally there are some new device ids, including a simplification of how
we deal with a couple of older Olimex JTAG adapters.

All have been in linux-next with no reported issues.

Signed-off-by: Johan Hovold <johan@kernel.org>