linux-kernel - Re: [PATCH 06/13] MIPS: generic: Call the machine's .get_system

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Message-Id: <YNGWEQ.XFIJE749QSY11@crapouillou.net>
Date:   Tue, 11 Aug 2020 14:43:10 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc:     Paul Burton <paulburton@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        周琰杰 <zhouyanjie@...yeetech.com>, od@...c.me,
        linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org
Subject: Re: [PATCH 06/13] MIPS: generic: Call the machine's .get_system_type
 callback if provided



Le lun. 3 août 2020 à 19:01, Paul Cercueil <paul@...pouillou.net> a 
écrit :
> Call the machine's .get_system_type callback in the global
> get_system_type() function, if it was provided by the mips_machine
> implementation.
> 
> The get_system_type() function had to be moved within init.c to be 
> able
> to use the static variable "mach". Therefore the proc.c, now empty, 
> has
> been removed.
> 
> Signed-off-by: Paul Cercueil <paul@...pouillou.net>
> ---
>  arch/mips/generic/Makefile |  1 -
>  arch/mips/generic/init.c   | 19 +++++++++++++++++++
>  arch/mips/generic/proc.c   | 25 -------------------------
>  3 files changed, 19 insertions(+), 26 deletions(-)
>  delete mode 100644 arch/mips/generic/proc.c
> 
> diff --git a/arch/mips/generic/Makefile b/arch/mips/generic/Makefile
> index 2384a6b09e4c..f49aeede93c2 100644
> --- a/arch/mips/generic/Makefile
> +++ b/arch/mips/generic/Makefile
> @@ -6,7 +6,6 @@
> 
>  obj-y += init.o
>  obj-y += irq.o
> -obj-y += proc.o
> 
>  obj-$(CONFIG_YAMON_DT_SHIM)		+= yamon-dt.o
>  obj-$(CONFIG_LEGACY_BOARD_SEAD3)	+= board-sead3.o
> diff --git a/arch/mips/generic/init.c b/arch/mips/generic/init.c
> index 805d0135a9f4..7d82b436939e 100644
> --- a/arch/mips/generic/init.c
> +++ b/arch/mips/generic/init.c
> @@ -207,3 +207,22 @@ void __init arch_init_irq(void)
>  void __init prom_free_prom_memory(void)
>  {
>  }
> +
> +const char *get_system_type(void)
> +{
> +	const char *str;
> +	int err;
> +
> +	if (mach && mach->get_system_type)
> +		return mach->get_system_type(of_root);

The 'mach' variable is __initconst, so there's a section violation 
right here. I'll send a V2.

-Paul

> +
> +	err = of_property_read_string(of_root, "model", &str);
> +	if (!err)
> +		return str;
> +
> +	err = of_property_read_string_index(of_root, "compatible", 0, &str);
> +	if (!err)
> +		return str;
> +
> +	return "Unknown";
> +}
> diff --git a/arch/mips/generic/proc.c b/arch/mips/generic/proc.c
> deleted file mode 100644
> index 4c992809cc3f..000000000000
> --- a/arch/mips/generic/proc.c
> +++ /dev/null
> @@ -1,25 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0-or-later
> -/*
> - * Copyright (C) 2016 Imagination Technologies
> - * Author: Paul Burton <paul.burton@...s.com>
> - */
> -
> -#include <linux/of.h>
> -
> -#include <asm/bootinfo.h>
> -
> -const char *get_system_type(void)
> -{
> -	const char *str;
> -	int err;
> -
> -	err = of_property_read_string(of_root, "model", &str);
> -	if (!err)
> -		return str;
> -
> -	err = of_property_read_string_index(of_root, "compatible", 0, &str);
> -	if (!err)
> -		return str;
> -
> -	return "Unknown";
> -}
> --
> 2.27.0
>