Re: [PATCH 2/3] leds-clevo-mail: hw accelerated LED blink extension

[Dmitry Torokhov]

On 7/17/07, Németh Márton <nm127@xxxxxxxxxxx> wrote:
> +Hardware accelerated blink of LEDs
> +==================================
> +
> +Some LEDs can be programmed to blink without any CPU interaction. To
> +support this feature, a LED driver can optionally implement the
> +blink_set() function (see <linux/leds.h>). If implemeted, the
> +ledtrig-timer tries to use it. The blink_set() function should return
> +1 if the blink setting is supported, or 0 otherwise, which means that
> +the LED will be turned on and off from software.

Normally object methods in kernel return 0 on success and error code
(such as -EINVAL for unsupported parameters) on error.

--
Dmitry
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/