linux-kernel - Re: [PATCH v2 01/10] ARM: NUC900: Add nuc970 machine support

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Date:	Mon, 11 Jul 2016 00:11:31 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Wan Zongshun <vw@...mu.org>, Russell King <linux@...linux.org.uk>,
	devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
	jason@...edaemon.net, Daniel Lezcano <daniel.lezcano@...aro.org>,
	linux-kernel@...r.kernel.org, p.zabel@...gutronix.de,
	Thomas Gleixner <tglx@...utronix.de>,
	Wan Zongshun <mcuos.com@...il.com>
Subject: Re: [PATCH v2 01/10] ARM: NUC900: Add nuc970 machine support

On Sunday, July 10, 2016 3:27:21 PM CEST Wan Zongshun wrote:
> +
> +#include <linux/platform_device.h>
> +#include <linux/clk.h>
> +#include <linux/clkdev.h>
> +#include <linux/delay.h>
> +#include <linux/err.h>
> +#include <linux/gpio.h>
> +#include <linux/init.h>
> +#include <linux/reboot.h>
> +#include <linux/of_address.h>
> +#include <linux/of_platform.h>
> +#include <linux/sys_soc.h>
> +#include <linux/semaphore.h>
> +
> +#include <asm/system_misc.h>
> +#include <asm/mach/arch.h>
> +
> +static void __init nuc900_machine_init(void)
> +{
> +       of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
> +}


This is the default for .init_machine, so you can leave the function
undefined.

> +static const char *nuc900_dt_compat[] __initconst = {
> +       "nuvoton,nuc970",
> +       NULL,
> +};
> +
> +DT_MACHINE_START(nuc900_dt, "Nuvoton NUC900 (Device Tree Support)")
> +       .init_machine   = nuc900_machine_init,
> +       .dt_compat      = nuc900_dt_compat,
> +MACHINE_END
> 

After that, you can probably remove most of the #include statements.
The file is still needed for now, until you move to ARCH_MULTIPLATFORM,
at which point the entire machine descriptor is redundant.

	Arnd