linux-kernel - Re: [PATCH 1/3] phy: omap-control: Remove unneeded ifdef CONFIG_OF guard and of_match

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Date:	Thu, 5 Mar 2015 23:29:13 +0800
From:	Axel Lin <axel.lin@...ics.com>
To:	Roger Quadros <rogerq@...com>
Cc:	Kishon Vijay Abraham I <kishon@...com>,
	Vignesh R <vigneshr@...com>, Felipe Balbi <balbi@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] phy: omap-control: Remove unneeded ifdef CONFIG_OF
 guard and of_match_ptr

2015-03-05 18:48 GMT+08:00 Roger Quadros <rogerq@...com>:
> Hi Alex,
It's Axel.

>
> Since we're anyways going to fail probe for !CONFIG_OF, why do you want to
> add the unnecessary device table to the kernel?
>
> what are you benefiting from this change?

If the driver works for both dt case and non-dt case, using the ifdef CONFIG_OF
guard can save a few memory for non-dt case.
For dt-only  driver it is not required because you cannot use the driver
if !CONFIG_OF. Which means you should not build this driver at all if !CONFIG_OF
unless you just want to do compile test.

Regards,
Axel
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