Searched hist:b979248d16d12b913501dacd61bddc7a36aac886 (Results 1 – 1 of 1) sorted by relevance
| /linux/drivers/usb/serial/ |
| H A D | cp210x.c | diff b979248d16d12b913501dacd61bddc7a36aac886 Fri Apr 09 17:52:15 CEST 2021 Johan Hovold <johan@kernel.org> USB: serial: cp210x: provide gpio valid mask
Use the new GPIO valid-mask feature to inform gpiolib which pins are
available for use instead of handling that in a request callback.
This also allows user space to figure out which pins are available
through the chardev interface without having to request each pin in
turn.
Note that the return value when requesting an unavailable pin will now
be -EINVAL instead of -ENODEV.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
|