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. Johan Johan Hovold (2): USB: serial: cp210x: provide gpio valid mask USB: serial: cp210x: add gpio-configuration debug printk drivers/usb/serial/cp210x.c | 31 +++++++++++++++++++------------ 1 file changed, 19 insertions(+), 12 deletions(-) -- 2.26.3