linux-kernel - Re: [PATCH] clk: Constify struct clk_init

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Date:	Tue, 15 May 2012 09:00:58 +0200
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Saravana Kannan <skannan@...eaurora.org>
Cc:	"Turquette, Mike" <mturquette@...com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	andrew@...n.ch, rnayak@...com
Subject: Re: [PATCH] clk: Constify struct clk_init_data

On Mon, May 14, 2012 at 06:19:16PM -0700, Saravana Kannan wrote:
> On 05/14/2012 02:53 PM, Turquette, Mike wrote:
> >On Mon, May 14, 2012 at 7:12 AM, Mark Brown<broonie@...nsource.wolfsonmicro.com>  wrote:
> >>Allow drivers to declare their clk_init_data const, the framework really
> >>shouldn't be modifying the data.
> >>
> >>Signed-off-by: Mark Brown<broonie@...nsource.wolfsonmicro.com>
> >
> >+interested parties
> >
> >>
> >>diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
> >>index c1c23b9..fc43ea6 100644
> >>--- a/include/linux/clk-provider.h
> >>+++ b/include/linux/clk-provider.h
> >>@@ -143,7 +143,7 @@ struct clk_init_data {
> >>  */
> >>  struct clk_hw {
> >>        struct clk *clk;
> >>-       struct clk_init_data *init;
> >>+       const struct clk_init_data *init;
> 
> Oh, wait. This won't work for the case where the clock registration
> is completely dynamic. Say, created from device tree or thru some
> PCI/USB device probe, etc. That's why I didn't add it before.

Why not? In this case clk_init_data is also only used in clk_register.
Given that Mark has posted the patch I assume it actually works.

Sascha

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