linux-kernel - Re: [PATCH 00/16] i2c: drop class based instantiaion for selected drivers

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Date:	Thu, 10 Jul 2014 14:38:37 +0200
From:	Lothar Waßmann <LW@...O-electronics.de>
To:	Wolfram Sang <wsa@...-dreams.de>
Cc:	linux-i2c@...r.kernel.org,
	davinci-linux-open-source@...ux.davincidsp.com,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	adi-buildroot-devel@...ts.sourceforge.net,
	linux-tegra@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 00/16] i2c: drop class based instantiaion for selected
 drivers

Hi,

Wolfram Sang wrote:
> Some drivers were flagged to remove class based instantiation soon to improve
> boot-up time. Originally, I was planning for a longer deprecation time so users
> could switch over to some other kind of instantiation. However, the demand for
> the speed up is high enough and class based instantiation is used rarely, so
> the removal takes place now. To make up for the deprecation time, another
> warning is added to the i2c core pointing out that the behaviour has now
> changed:
> 
> +	/* Warn that the adapter lost class based instantiation */
> +	if (adapter->class == I2C_CLASS_DEPRECATED) {
> +		dev_dbg(&adapter->dev,
> +			"This adapter dropped support for I2C classes and "
> +			"won't auto-detect %s devices anymore. If you need it, check "
> +			"'Documentation/i2c/instantiating-devices' for alternatives.\n",
>
It's usually a bad idea to split kernel messages across source lines
because it makes searching for the corresponding source line for a
message found in the log difficult.
You could at least do the split at the sentence boundary.


Lothar Waßmann
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