From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Barry Song <21cnbao-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>,
workgroup.linux-kQvG35nSl+M@public.gmane.org,
Xiaomeng Hou <Xiaomeng.Hou-kQvG35nSl+M@public.gmane.org>,
linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Barry Song <Baohua.Song-kQvG35nSl+M@public.gmane.org>
Subject: Re: [PATCH] i2c: sirf: move driver init from module_init to subsys_initcall
Date: Sat, 25 May 2013 16:10:32 -0400 [thread overview]
Message-ID: <20130525201032.GD32043@sirena.org.uk> (raw)
In-Reply-To: <CAGsJ_4zVOF8-g=emEGgP3atxkWdxMaQQiVZrZkht_WueTriSnw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
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On Thu, May 16, 2013 at 06:25:39PM +0800, Barry Song wrote:
> 2013/5/16 Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>:
> > What about deferred probing?
> deferred probing could work but could not work for automative.
> what we really want is that devices begin to work as early as
> possible. we want i2c clients like lcd, camera begin to show images as
> early as possible as an automative requirement.
Probe deferral should have at most a mimimal impact on the boot time -
it's pretty much just changing the order providing the probe functions
aren't excessively slow to defer. If the probe functions are taking a
long time to defer that's probably what needs looking at.
If it really is probe deferral itself that's too slow then we ought to
be looking at improving that rather than boding around it.
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next prev parent reply other threads:[~2013-05-25 20:10 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-16 2:50 [PATCH] i2c: sirf: move driver init from module_init to subsys_initcall Barry Song
[not found] ` <1368672607-5536-1-git-send-email-Baohua.Song-kQvG35nSl+M@public.gmane.org>
2013-05-16 9:38 ` Wolfram Sang
2013-05-16 10:25 ` Barry Song
[not found] ` <CAGsJ_4zVOF8-g=emEGgP3atxkWdxMaQQiVZrZkht_WueTriSnw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-05-25 20:10 ` Mark Brown [this message]
[not found] ` <20130525201032.GD32043-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2013-05-27 1:54 ` Barry Song
[not found] ` <CAGsJ_4y6SY6nNkbW+Yh8jx0WB4Pi9MO1W3xVZcrQcedGeD5ogQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-05-27 12:16 ` Mark Brown
[not found] ` <20130527121658.GA3660-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2013-05-27 15:36 ` Barry Song
[not found] ` <CAGsJ_4w867BhFvVze5BNaYheW75pMcOGhscz3wSZiia-neP59w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-10 13:45 ` Wolfram Sang
2013-06-11 1:14 ` Barry Song
[not found] ` <CAGsJ_4y4svi0TbUKK1aAW1McM5rFoo5Vb9rGPweq-sHJ2NN5cQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-11 8:48 ` Mark Brown
[not found] ` <20130611084827.GS1403-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2013-06-11 11:13 ` Barry Song
[not found] ` <CAGsJ_4wH=mNxBTqizKjJR2YhmVQa=iprfUmVYy8oz7MZeLfkqg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-11 12:10 ` Mark Brown
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