apic: use symbolic APIC_EOI_ACK
Use the symbol instead of hard-coded numbers,
now that the reason for the value is documented
where the constant is defined we don't need to
duplicate this explanation in code.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index d854101..a09e9ab 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -463,9 +463,7 @@
* ack_APIC_irq() actually gets compiled as a single instruction
* ... yummie.
*/
-
- /* Docs say use 0 for future compatibility */
- apic_write(APIC_EOI, 0);
+ apic_write(APIC_EOI, APIC_EOI_ACK);
}
static inline unsigned default_get_apic_id(unsigned long x)
