Messages in this thread | | | Date | Wed, 23 Jul 2014 09:21:29 -0700 | From | Greg KH <> | Subject | Re: [PATCH v2] usb:serial:pl2303: add GPIOs interface on PL2303 |
| |
On Wed, Jul 23, 2014 at 05:03:14PM +0100, One Thousand Gnomes wrote: > > + if (gpiochip_remove(&spriv->gpio->gpio_chip)) > > + dev_err(&serial->interface->dev, "unable to remove gpio_chip?\n"); > > + kfree(spriv->gpio); > > + } > > +#endif > > kfree(spriv); > > Only other question I have - if I have multiple PL2303HX adapters how > will I work out which GPIO lines belong to which /dev/ttyUSB* interface ?
sysfs _should_ show you this, as it should point to the "parent" device, which will be associated with the ttyUSB interface. Well, both the tty device and the gpio device will have the same parent, is that good enough to determine this, or should the gpio device have the tty device as its parent?
thanks,
greg k-h
| |