linux-kernel - Re: Reboot PATCH (ACPI related)

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Message-Id: <20070512234413.54fc6afa.akpm@linux-foundation.org>
Date:	Sat, 12 May 2007 23:44:13 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Lukas Hejtmanek <xhejtman@....muni.cz>
Cc:	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: Reboot PATCH (ACPI related)

On Sat, 12 May 2007 22:10:07 +0200 Lukas Hejtmanek <xhejtman@....muni.cz> wrote:

> why the attached patch is still not included in mainline kernel? It fixes boot
> problems after suspend to RAM.
> 
> -- 
> Lukáš Hejtmánek
> 
> 
> [reboot.patch  text/x-diff (564B)]
> --- arch/i386/kernel/reboot.c.old	2006-06-18 03:49:35.000000000 +0200
> +++ arch/i386/kernel/reboot.c	2006-07-01 17:29:23.000000000 +0200
> @@ -31,6 +31,12 @@
>  #ifdef CONFIG_SMP
>  static int reboot_cpu = -1;
>  #endif
> +#ifdef CONFIG_ACPI
> +extern u32 acpi_disable(void);
> +#else
> +static u32 acpi_disable(void){};
> +#endif
> +
>  static int __init reboot_setup(char *str)
>  {
>  	while(1) {
> @@ -322,6 +328,7 @@
>  
>  void machine_emergency_restart(void)
>  {
> +	acpi_disable();
>  	if (!reboot_thru_bios) {
>  		if (efi_enabled) {
>  			efi.reset_system(EFI_RESET_COLD, EFI_SUCCESS, 0, NULL);

We'd prefer to fix the problem, whatever it is, rather than just turning
APCI off.

Please ensure that a full bug report has been entered at bugzilla.kernel.org,
thanks.
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