On Wed, 2014-03-26 at 10:03 +0100, Wolfgang Denk wrote:
Dear Ian Campbell,
In message 1395822781.29683.12.camel@dagon.hellion.org.uk you wrote:
On Mon, 2014-03-24 at 21:54 +0100, Marek Vasut wrote:
+int sunxi_gpio_set_cfgpin(u32 pin, u32 val); +int sunxi_gpio_get_cfgpin(u32 pin); +int sunxi_gpio_set_drv(u32 pin, u32 val); +int sunxi_gpio_set_pull(u32 pin, u32 val); +int name_to_gpio(const char *name); +#define name_to_gpio name_to_gpio
What is this ugly define doing here ?
common/cmd_gpio.c uses the #ifndef name_to_gpio pattern to provide (or not) a default fallback implementation. I think this is a reasonably (but not very) common idiom for such cases where the non-default variant is not best expressed as a macro.
Please add a comment to explain that.
Unless you object I think I'll do as Marek suggested name the function sunxi_name_to_gpio and make the #define to that, it seems more consistent that way.
Ian.