linux-kernel - Re: [PATCH] [media] coda: Fix build due to iram.h rename

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Date:	Mon, 17 Dec 2012 10:37:14 +0100
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Fabio Estevam <fabio.estevam@...escale.com>
Cc:	mchehab@...radead.org, kernel@...gutronix.de,
	p.zabel@...gutronix.de, javier.martin@...ta-silicon.com,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [media] coda: Fix build due to iram.h rename

On Wed, Nov 14, 2012 at 11:04:42AM -0200, Fabio Estevam wrote:
> commit c045e3f13 (ARM: imx: include iram.h rather than mach/iram.h) changed the
> location of iram.h, which causes the following build error when building the coda
> driver:
> 
> drivers/media/platform/coda.c:27:23: error: mach/iram.h: No such file or directory
> drivers/media/platform/coda.c: In function 'coda_probe':
> drivers/media/platform/coda.c:2000: error: implicit declaration of function 'iram_alloc'
> drivers/media/platform/coda.c:2001: warning: assignment makes pointer from integer without a cast
> drivers/media/platform/coda.c: In function 'coda_remove':
> drivers/media/platform/coda.c:2024: error: implicit declaration of function 'iram_free
> 
> Since the content of iram.h is not imx specific, move it to include/linux/iram.h
> instead.

Generally we need a fix for this, but:

> diff --git a/arch/arm/mach-imx/iram.h b/include/linux/iram.h
> similarity index 100%
> rename from arch/arm/mach-imx/iram.h
> rename to include/linux/iram.h

We shouldn't introduce a file include/linux/iram.h which is purely i.MX
specific. The name is far too generic. I would rather suggest
include/linux/platform_data/imx-iram.h (Although it's not exactly
platform_data, so I'm open for better suggestions).

As a side note this i.MX specific iram stuff (hopefully) is obsolete
after the next merge window as Philip already has patches for a generic
iram allocator which didn't make it into this merge window.

Sascha

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