On Fri, Feb 10, 2017 at 9:45 PM, Bjorn Helgaas <helgaas@xxxxxxxxxx> wrote: > Kishon's is slightly different because it uses devm_gpiod_get_optional() > instead of devm_gpiod_get(). Fair enough. > They both look slightly funny because we throw away the struct gpio_desc * > that's returned, without ever using it anywhere (except to test for error). > I *assume* that's what you want, since that's the way it was before the > patch, too. It's a hog-type usecase: when you request the GPIO it is set to a value that you never want to change. When the module is .exit():ed the descriptor will be garbage collected thanks to using the devm_* accessor. Yours, Linus Walleij
