Commit d0708227 authored by Johan Hovold's avatar Johan Hovold
Browse files

USB: serial: cp210x: add gpio-configuration debug printk 



Add a debug printk to dump the GPIO configuration stored in EEPROM
during probe.

Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
parent b979248d

drivers/usb/serial/cp210x.c

+6 −0
Original line number Diff line number Diff line
@@ -1543,10 +1543,16 @@ static int cp210x_gpio_init_valid_mask(struct gpio_chip *gc, 
{

	struct usb_serial *serial = gpiochip_get_data(gc);

	struct cp210x_serial_private *priv = usb_get_serial_data(serial);

	struct device *dev = &serial->interface->dev;

	unsigned long altfunc_mask = priv->gpio_altfunc;



	bitmap_complement(valid_mask, &altfunc_mask, ngpios);



	if (bitmap_empty(valid_mask, ngpios))

		dev_dbg(dev, "no pin configured for GPIO\n");

	else

		dev_dbg(dev, "GPIO.%*pbl configured for GPIO\n", ngpios,

				valid_mask);

	return 0;

}