On Thu, Aug 01, 2019 at 12:46:42PM +0000, Schrempf Frieder wrote: > From: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx> > > If CONFIG_GPIOLIB is not enabled, mctrl_gpio_init() and > mctrl_gpio_init_noauto() will currently return an error pointer with > -ENOSYS. As the mctrl GPIOs are usually optional, drivers need to > check for this condition to allow continue probing. > > To avoid the need for this check in each driver, we return NULL > instead, as all the mctrl_gpio_*() functions are skipped anyway. > We also adapt mctrl_gpio_to_gpiod() to be in line with this change. > > Signed-off-by: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx> > --- > drivers/tty/serial/serial_mctrl_gpio.c | 3 +++ > drivers/tty/serial/serial_mctrl_gpio.h | 6 +++--- > drivers/tty/serial/sh-sci.c | 2 +- I'd split the sh-sci change in a separate patch. And there is another instance in drivers/tty/serial/8250/8250_core.c that should be dropped. Other than that looks good. Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ |
