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Revision 9e3a9d1ed8cc8db93e5c53e9a5b09065bd95de8b authored by Len Brown on 06 February 2009, 19:00:56 UTC, committed by Len Brown on 06 February 2009, 19:00:56 UTC 
ACPI: disable ACPI cleanly when bad RSDP found
 
When ACPI is disabled in the BIOS of this VIA C3 box,
it invalidates the RSDP, which Linux notices:

ACPI Error (tbxfroot-0218): A valid RSDP was not found [20080926]

Bug Linux neglected to disable ACPI at that stage,
and later scribbled on smp_found_config:

ACPI: No APIC-table, disabling MPS

But this box doesn't run well in legacy PIC mode,
it needed IOAPIC mode to perform correctly:

http://lkml.org/lkml/2009/2/5/39

So exit ACPI mode cleanly when we first detect
that it is hopeless.

Signed-off-by: Len Brown <len.brown@intel.com>
1 parent f3b39f1
Raw File
bug.h 
#ifndef _M68K_BUG_H
#define _M68K_BUG_H


#ifdef CONFIG_BUG
#ifdef CONFIG_DEBUG_BUGVERBOSE
#ifndef CONFIG_SUN3
#define BUG() do { \
	printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
	__builtin_trap(); \
} while (0)
#else
#define BUG() do { \
	printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
	panic("BUG!"); \
} while (0)
#endif
#else
#define BUG() do { \
	__builtin_trap(); \
} while (0)
#endif

#define HAVE_ARCH_BUG
#endif

#include <asm-generic/bug.h>

#endif
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