Here are a few small bug fixes in uart-gb.c:
- In wait_serial_change():
- Return -EINVAL if *none* of the relevant flags are set in
the "arg" parameter.
- Balance the spin_lock_irq() with an unlock call (not
another lock).
- Rearrange a nested if structure (not a bug fix).
- In tty_gb_probe():
- Reset the greybus_device driver data in case of error.
Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>