ACPI: Move BAD_MADT_ENTRY() to linux/acpi.h

[cascardo/linux.git] / include / linux / acpi.h

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 1151a1d..6a15ddd 100644 (file)
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -108,6 +108,10 @@ static inline void acpi_initrd_override(void *data, size_t size)
 }
 #endif
 
+#define BAD_MADT_ENTRY(entry, end) (                                       \
+               (!entry) || (unsigned long)entry + sizeof(*entry) > end ||  \
+               ((struct acpi_subtable_header *)entry)->length < sizeof(*entry))
+
 char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
 void __acpi_unmap_table(char *map, unsigned long size);
 int early_acpi_boot_init(void);