linux-kernel - Re: [PATCH] reboot: re-enable the function of variable reboot

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Date:	Mon, 9 Sep 2013 10:06:34 -0500
From:	Robin Holt <robinmholt@...ux.com>
To:	Chuansheng Liu <chuansheng.liu@...el.com>
Cc:	mingo@...nel.org, holt@....com, hpa@...or.com,
	rmk+kernel@....linux.org.uk, rja@....com,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	fei.li@...el.com
Subject: Re: [PATCH] reboot: re-enable the function of variable reboot_default

On Mon, Sep 09, 2013 at 07:49:40PM +0800, Chuansheng Liu wrote:
> 
> commit b3a5d02ee070c(reboot: move arch/x86 reboot= handling to generic kernel)

The commit id was really 1b3a5d02ee070c

> did some cleanup for reboot= command line, but it made the reboot_default
> to be invalidated.
> 
> The default value of variable reboot_default should be 1, and if command line
> reboot= is not set, system will use the default reboot mode.
> 
> Signed-off-by: Li Fei <fei.li@...el.com>
> Signed-off-by: liu chuansheng <chuansheng.liu@...el.com>

Acked-by: Robin Holt <robinmholt@...ux.com>

Thank you for fixing my bug.

Note: My email address used to be holt@....com

> ---
>  kernel/reboot.c |    9 ++++++++-
>  1 files changed, 8 insertions(+), 1 deletions(-)
> 
> diff --git a/kernel/reboot.c b/kernel/reboot.c
> index 269ed93..d82eb6e 100644
> --- a/kernel/reboot.c
> +++ b/kernel/reboot.c
> @@ -32,7 +32,14 @@ EXPORT_SYMBOL(cad_pid);
>  #endif
>  enum reboot_mode reboot_mode DEFAULT_REBOOT_MODE;
>  
> -int reboot_default;
> +/*
> + * This variable is used privately to keep track of whether or not
> + * reboot_type is still set to its default value (i.e., reboot= hasn't
> + * been set on the command line).  This is needed so that we can
> + * suppress DMI scanning for reboot quirks.  Without it, it's
> + * impossible to override a faulty reboot quirk without recompiling.
> +*/
> +int reboot_default = 1;
>  int reboot_cpu;
>  enum reboot_type reboot_type = BOOT_ACPI;
>  int reboot_force;
> -- 
> 1.7.0.4
> 
> 
> 
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