[PATCH] Fix NR_IRQS when no IO apic

NR_IRQS should be 16 when the IO apic is not configured, as the 8259 PIC
cannot generate any more interrupts.  It also fixes a bug where the IDT
gets populated with random addresses, since only 16 entry stubs are
created.

diff --git a/include/asm-i386/irq.h b/include/asm-i386/irq.h
index c0d2b88b6ff0aa35b0cc233d75ebd0abd09eb008..c1bcd739bc7bbf9245627f623cadc163ea07dd3c 100644 (file)
--- a/include/asm-i386/irq.h
+++ b/include/asm-i386/irq.h
@@ -23,7 +23,11 @@
  * Since vectors 0x00-0x1f are used/reserved for the CPU,
  * the usable vector space is 0x20-0xff (224 vectors)
  */
+#ifdef CONFIG_X86_IO_APIC
 #define NR_IRQS 224
+#else
+#define NR_IRQS 16
+#endif
 
 static __inline__ int irq_cannonicalize(int irq)
 {