[PATCH 2/3] led-triggers: use atomic kzalloc during led trigger registering

[Linus Walleij]

2012/3/10 Bryan Wu <bryan.wu at canonical.com>:
> 2012/3/8 Uwe Kleine-König <u.kleine-koenig at pengutronix.de>:
>> On Thu, Mar 08, 2012 at 05:11:02PM +0800, Bryan Wu wrote:
>>> kzalloc might cause sleep and will generate some warning detected by lockdep,
>>> when call led_trigger_register_simple on each cpu cores in SMP. This patch fix
>>> this.
>> The obvious (and IMHO better) alternative is to call
>> led_trigger_register_simple from non-atomic context.
>>
>> For registering this should be OK, shouldn't it?
>>
> Thanks Uwe, it's my bad. I think I should not use on_each_cpu() API to
> run led_trigger_register_simple. on_each_cpu() will disable interrupt.

It might have been my mistake even so not your fault ... :-)

Thanks,
Linus Walleij