Re: [PATCH] fix oops on resume from apm bios initiated suspend

[Pavel Machek (pavel@suse.cz)]

Hi!

> Didn't know if you caught this one, but it fixes it for me and others
> who responded on the list.  
> 
> mm is NULL for kernel threads without their own context.  active_mm is
> maintained the one we lazly switch from.
> 
> Without this patch, apm bios initiated suspend events (eg panel close) 
> cause an oops on resume in the LDT restore, killing kapmd, which causes
> further events to not be polled.

Ouch, okay, this looks good. Andrew please apply.

[I guess this is trivial enough for trivial patch monkey if andrew
does not want to take it...]
								Pavel

> ===== arch/i386/kernel/suspend.c 1.16 vs edited =====
> --- 1.16/arch/i386/kernel/suspend.c	Sat May 17 16:09:37 2003
> +++ edited/arch/i386/kernel/suspend.c	Sat May 24 05:00:02 2003
> @@ -114,7 +114,7 @@
>          cpu_gdt_table[cpu][GDT_ENTRY_TSS].b &= 0xfffffdff;
>  
>  	load_TR_desc();				/* This does ltr */
> -	load_LDT(&current->mm->context);	/* This does lldt */
> +	load_LDT(&current->active_mm->context);	/* This does lldt */
>  
>  	/*
>  	 * Now maybe reload the debug registers

-- 
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]
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