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SubjectRe: [PATCH] mfd wm8350: rename static gpio_set_debounce()
Hello,

[extended the audience a bit]

On Wed, Aug 10, 2011 at 10:05:49AM +0200, Sascha Hauer wrote:
>
> The kernel already has a function with this name declared
> in asm-generic/gpio.h. So if this header leaks into wm8350/gpio.c
> we get
note the "if" is real on arm/imx since

14305e6 (ARM: mxc: use ARCH_NR_GPIOS to define gpio number)

That commit adds an #include <asm-generic/gpio.h> to
arch/arm/plat-mxc/include/mach/irqs.h and so you get the gpio stuff when
#including <linux/interrupt.h> (via linux/interrupt.h -> linux/irqnr.h
-> asm/irq.h -> mach/irqs.h).
I think this is a bit unfortunate, but I havn't looked if it could be
prevented somehow.

> drivers/mfd/wm8350-gpio.c:40:12: error: conflicting types for 'gpio_set_debounce'
> include/asm-generic/gpio.h:156:12: note: previous declaration of 'gpio_set_debounce' was here
>
> Fix this by adding a wm8350_ prefix to the function.
Nevertheless Sascha's patch is OK as gpio_set_debounce is a too generic
name for a function in an mfd driver. That said I think the other
functions should get the same fix.

Best regards
Uwe

> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> ---
>
> This is the minimal solution to this problem. It would be more
> consistent though not required to add a wm8350_ prefix to the
> other functions in this file aswell. Let me know what you prefer.
>
> drivers/mfd/wm8350-gpio.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mfd/wm8350-gpio.c b/drivers/mfd/wm8350-gpio.c
> index ebf99be..d584f6b 100644
> --- a/drivers/mfd/wm8350-gpio.c
> +++ b/drivers/mfd/wm8350-gpio.c
> @@ -37,7 +37,7 @@ static int gpio_set_dir(struct wm8350 *wm8350, int gpio, int dir)
> return ret;
> }
>
> -static int gpio_set_debounce(struct wm8350 *wm8350, int gpio, int db)
> +static int wm8350_gpio_set_debounce(struct wm8350 *wm8350, int gpio, int db)
> {
> if (db == WM8350_GPIO_DEBOUNCE_ON)
> return wm8350_set_bits(wm8350, WM8350_GPIO_DEBOUNCE,
> @@ -210,7 +210,7 @@ int wm8350_gpio_config(struct wm8350 *wm8350, int gpio, int dir, int func,
> goto err;
> if (gpio_set_polarity(wm8350, gpio, pol))
> goto err;
> - if (gpio_set_debounce(wm8350, gpio, debounce))
> + if (wm8350_gpio_set_debounce(wm8350, gpio, debounce))
> goto err;
> if (gpio_set_dir(wm8350, gpio, dir))
> goto err;
> --
> 1.7.5.4
>
> --
> Pengutronix e.K. | |
> Industrial Linux Solutions | http://www.pengutronix.de/ |
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--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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