linux-kernel - heartbeat for leds on i2c bus

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Message-ID: <20071203103557.GT10305@enneenne.com>
Date:	Mon, 3 Dec 2007 11:35:57 +0100
From:	Rodolfo Giometti <giometti@...eenne.com>
To:	Atsushi Nemoto <anemo@....ocn.ne.jp>
Cc:	linux-kernel@...r.kernel.org
Subject: heartbeat for leds on i2c bus

Hello,

on my custom board I have some leds mapped on a dedicated chip
connected via i2c bus.

If I try to use the heartbeat trigger I hang the system... I suppose
it is due the fact the led_set_brightness() function is called inside
a kernel timer.

How I can solve this problem? I thought to modify the trigger adding a
kernel thread who manage the led which in turn is controlled by the
kernel timer. It could be the right solution?

Thanks in advance,

Rodolfo

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GNU/Linux Solutions                  e-mail:    giometti@...eenne.com
Linux Device Driver                             giometti@...dd.com
Embedded Systems                     		giometti@...ux.it
UNIX programming                     phone:     +39 349 2432127
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