um: Fix off by one error in IRQ enumeration

Fix an off-by-one in IRQ enumeration

Fixes: 49da7e64f33e ("High Performance UML Vector Network Driver")
Reported by: Dana Johnson <djohns042@gmail.com>
Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

diff --git a/arch/um/include/asm/irq.h b/arch/um/include/asm/irq.h
index 49ed3e35b35adb1a5b679cfcbfe4f72d2cb97d09..ce7a78c3bcf218614371602992fbf41ac4d8f170 100644 (file)
--- a/arch/um/include/asm/irq.h
+++ b/arch/um/include/asm/irq.h
@@ -23,7 +23,7 @@
 #define VECTOR_BASE_IRQ                15
 #define VECTOR_IRQ_SPACE       8
 
-#define LAST_IRQ (VECTOR_IRQ_SPACE + VECTOR_BASE_IRQ)
+#define LAST_IRQ (VECTOR_IRQ_SPACE + VECTOR_BASE_IRQ - 1)
 
 #else