linux-kernel - Re: [PATCH] leds: triggers: send uevent when changing triggers

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Message-ID: <CAMbhsRT8U5rDuSQQ3_d44LsOUivyGviqMBOLV+Xpe7==90FGQw@mail.gmail.com>
Date:	Tue, 7 Aug 2012 12:44:02 -0700
From:	Colin Cross <ccross@...roid.com>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
Cc:	Bryan Wu <bryan.wu@...onical.com>,
	Greg KH <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, Richard Purdie <rpurdie@...ys.net>,
	linux-leds@...r.kernel.org
Subject: Re: [PATCH] leds: triggers: send uevent when changing triggers

On Tue, Aug 7, 2012 at 7:36 AM, Henrique de Moraes Holschuh
<hmh@....eng.br> wrote:
> On Tue, 07 Aug 2012, Bryan Wu wrote:
<snip>

>> Greg, Richard and Henrique, can I take you guys' Ack here?
>
> Yes, you have my Acked-by, provided that the uevent is NOT sent before
> the led is fully registered (I cannot check right now if the patch does
> this right or not.  I apologise in advance if this was an unecessary
> question).
>
> I don't care whether the uevent gets sent right after registration, or
> only when the trigger *changes* after registering.  But someone might,
> so it would be nice to document this.
>
> Considering Greg's answer, maybe it would be best to resend the patch
> with the point above clarified in the commit message or in the in-tree
> documentation of the LED class?

led_trigger_set_default is called last from led_classdev_register, so
it will send a uevent during registration but after it is fully
registered.  I will resend the patch with the clarification.
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