Hi Antony,
On Fri, Nov 22, 2013 at 12:11:24AM +0400, Antony Pavlov wrote:
> Also import related functions gpio_request_one() and
> gpio_free_array().
>
> This commit imports code from linux 3.7 as
> the more recent linux kernel versions use gpiolib descriptors,
> see this commit for details:
>
> commit 372e722ea4dd4ca11c3d04845e11cbc15f32144c
> Author: Alexandre Courbot <acourbot@xxxxxxxxxx>
> Date: Sun Feb 3 01:29:29 2013 +0900
>
> gpiolib: use descriptors internally
>
> Make sure gpiolib works internally with descriptors and (chip, offset)
> pairs instead of using the global integer namespace. This prepares the
> ground for the removal of the global gpio_desc[] array and the
> introduction of the descriptor-based GPIO API.
>
> Signed-off-by: Antony Pavlov <antonynpavlov@xxxxxxxxx>
What a pitty, we duplicated some work. I created exactly the same patch
recently but haven't posted it yet, shame on me.
> +static inline int gpio_request_one(unsigned gpio,
> + unsigned long flags, const char *label)
> +{
> + return 0;
> +}
> +
> +static inline int gpio_request_array(const struct gpio *array, size_t num)
> +{
> + return 0;
> +}
> +
That's the only place our patches differ. In my version I return -ENOSYS
since gpio_request_one() and gpio_request_array() not only request gpios
but also configure them. We can't return success without configuring the
gpios. I applied your version but with -ENOSYS here.
Sascha
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
