linux-kernel - Re: [PATCH 1/5] x86: make platform/intel-quark/imr.c explicitly non-modular

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Message-ID: <1455528420.31619.5.camel@nexus-software.ie>
Date:	Mon, 15 Feb 2016 09:27:00 +0000
From:	Bryan O'Donoghue <pure.logic@...us-software.ie>
To:	Paul Gortmaker <paul.gortmaker@...driver.com>,
	linux-kernel@...r.kernel.org
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Subject: Re: [PATCH 1/5] x86: make platform/intel-quark/imr.c explicitly
 non-modular

On Sun, 2016-02-14 at 18:09 -0500, Paul Gortmaker wrote:
> The Kconfig currently controlling compilation of this code is:
> 
> drivers/platform/x86/Kconfig:config INTEL_IMR
> drivers/platform/x86/Kconfig:   bool "Intel Isolated Memory Region
> support"
> 
> ...meaning that it currently is not being built as a module by
> anyone.
> 
> Lets remove the modular code that is essentially orphaned, so that
> when reading the driver there is no doubt it is builtin-only.
> 
> Since module_init translates to device_initcall in the non-modular
> case, the init ordering remains unchanged with this commit.
> 
> Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
> 
> We also delete the MODULE_LICENSE tag etc. since all that information
> was (or is now) contained at the top of the file in the comments.
> 
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: "H. Peter Anvin" <hpa@...or.com>
> Cc: Bryan O'Donoghue <pure.logic@...us-software.ie>
> Cc: x86@...nel.org
> Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
> ---
>  arch/x86/platform/intel-quark/imr.c | 35 ++-------------------------
> --------
>  1 file changed, 2 insertions(+), 33 deletions(-)
> 
> diff --git a/arch/x86/platform/intel-quark/imr.c
> b/arch/x86/platform/intel-quark/imr.c
> index c61b6c332e97..0a3736f03edc 100644
> --- a/arch/x86/platform/intel-quark/imr.c
> +++ b/arch/x86/platform/intel-quark/imr.c
> @@ -1,5 +1,5 @@
>  /**
> - * imr.c
> + * imr.c -- Intel Isolated Memory Region driver
>   *
>   * Copyright(c) 2013 Intel Corporation.
>   * Copyright(c) 2015 Bryan O'Donoghue <pure.logic@...us-software.ie>
> @@ -31,7 +31,6 @@
>  #include <linux/debugfs.h>
>  #include <linux/init.h>
>  #include <linux/mm.h>
> -#include <linux/module.h>
>  #include <linux/types.h>
>  
>  struct imr_device {
> @@ -270,17 +269,6 @@ static int imr_debugfs_register(struct
> imr_device *idev)
>  }
>  
>  /**
> - * imr_debugfs_unregister - unregister debugfs hooks.
> - *
> - * @idev:	pointer to imr_device structure.
> - * @return:
> - */
> -static void imr_debugfs_unregister(struct imr_device *idev)
> -{
> -	debugfs_remove(idev->file);
> -}
> -
> -/**
>   * imr_check_params - check passed address range IMR alignment and
> non-zero size
>   *
>   * @base:	base address of intended IMR.
> @@ -614,7 +602,6 @@ static const struct x86_cpu_id imr_ids[]
> __initconst = {
>  	{ X86_VENDOR_INTEL, 5, 9 },	/* Intel Quark SoC X1000.
> */
>  	{}
>  };
> -MODULE_DEVICE_TABLE(x86cpu, imr_ids);
>  
>  /**
>   * imr_init - entry point for IMR driver.
> @@ -640,22 +627,4 @@ static int __init imr_init(void)
>  	imr_fixup_memmap(idev);
>  	return 0;
>  }
> -
> -/**
> - * imr_exit - exit point for IMR code.
> - *
> - * Deregisters debugfs, leave IMR state as-is.
> - *
> - * return:
> - */
> -static void __exit imr_exit(void)
> -{
> -	imr_debugfs_unregister(&imr_dev);
> -}
> -
> -module_init(imr_init);
> -module_exit(imr_exit);
> -
> -MODULE_AUTHOR("Bryan O'Donoghue <pure.logic@...us-software.ie>");
> -MODULE_DESCRIPTION("Intel Isolated Memory Region driver");
> -MODULE_LICENSE("Dual BSD/GPL");
> +device_initcall(imr_init);

Fine by me.
Reviewed-by: Bryan O'Donoghue <pure.logic@...us-software.ie>