From mboxrd@z Thu Jan  1 00:00:00 1970
From: linux@arm.linux.org.uk (Russell King - ARM Linux)
Date: Fri, 12 Oct 2012 10:15:35 +0100
Subject: [PATCH v2 5/8] clk: don't mark clkdev_add_table as init
In-Reply-To: <1349813638-4617-6-git-send-email-arnd@arndb.de>
References: <1349813638-4617-1-git-send-email-arnd@arndb.de>
 <1349813638-4617-6-git-send-email-arnd@arndb.de>
Message-ID: <20121012091535.GD21164@n2100.arm.linux.org.uk>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Tue, Oct 09, 2012 at 10:13:55PM +0200, Arnd Bergmann wrote:
> s3c2440_clk_add is a subsys_interface method and calls clkdev_add_table,
> which means we might be calling it after the __init section is
> discarded.
> 
> Without this patch, building mini2440_defconfig results in:
> 
> WARNING: vmlinux.o(.text+0x9848): Section mismatch in reference from the function s3c2440_clk_add() to the function .init.text:clkdev_add_table()
> The function s3c2440_clk_add() references
> the function __init clkdev_add_table().
> This is often because s3c2440_clk_add lacks a __init
> annotation or the annotation of clkdev_add_table is wrong.

I'm not sure this is the right thing to do.  I suspect this comes from the
stupidly complex samsung code, and that this is actually safe - I suspect
that s3c2440_clk_add() needs to be appropriately marked, but then you end
up having to trace its call path through various structures etc.