Re: [PATCH] gpio: mxs: implement get_direction callback

Mon, 17 Nov 2014 10:59:09 +0100 ?? Uwe Kleine-K?nig [off-list ref]:

Hello Richard,

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So finally the prototypes would be:
int mctrl_gpio_request_irqs(struct mctrl_gpios*, struct
uart_port*, irqhandler_t);
void mctrl_gpio_free_irqs(struct mctrl_gpios*);

I think:

        struct mctrl_gpios {
                struct uart_port *port;
                struct {
                        gpio_desc *gpio;
                        unsigned int irq;

I think it's just "int irq;" there

irqs are unsigned. Some functions returning an irq use "int", but
depending on who you ask this only for error reporting or a relict.
Use 0 for invalid/unused in mctrl_gpio*.

afaik, IRQ 0 is valid irq number.

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