linux-kernel - Re: [PATCH] regulator: of: Lower the severity of the error with no container

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Message-ID: <20141008234541.GQ4609@sirena.org.uk>
Date:	Thu, 9 Oct 2014 00:45:41 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	Liam Girdwood <lgirdwood@...il.com>, linux-kernel@...r.kernel.org,
	linaro-kernel@...ts.linaro.org, atull@...nsource.altera.com
Subject: Re: [PATCH] regulator: of: Lower the severity of the error with no
 container

On Wed, Oct 08, 2014 at 03:59:12PM -0700, Guenter Roeck wrote:

> There is a log message "no parameters" for each regulator. This is printed
> unconditionally from print_constraints().

> Looking through the code again, looks like this is on purpose. It is just a bit
> annoying to get lots of those messages. One of the systems I am dealing with has
> 17 LTC2978 chips in it, with 8 channels each. That results in 136 times "no
> parameters" in the boot log. And that is not even a fully populated system;
> if fully populated, there can be more than 60 of those chips. 500+ lines of 
> similar log messages is really a bit on the high side.

> It might help if there was a way to silence the messages, ie to make
> "print_constraints" optional. 

Ah, from the constraints rather than from the DT parsing.  I do like
having it there since it's enormously helpful in debugging and that is
a...  specialist number of regulators you have in your system.  We can
definitely at least add a boot argument or something to suppress them,
let me have a think if we want to do that by default.

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