[IA64] Fix wrong assumption in acpi_gsi_to_irq

The ia64's acpi_gsi_to_irq() function assumes irq == vector. But in
fact irq can be different from vector. This patch fix this wrong
assumption.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 4 insertions, 5 deletions

diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index c6ede8780ded..3d45d24a9d61 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -741,16 +741,15 @@ int __init acpi_boot_init(void)
 
 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
 {
-        int vector;
+        int tmp;
 
         if (has_8259 && gsi < 16)
                 *irq = isa_irq_to_vector(gsi);
         else {
-                vector = gsi_to_vector(gsi);
-                if (vector == -1)
+                tmp = gsi_to_irq(gsi);
+                if (tmp == -1)
                         return -1;
-
-                *irq = vector;
+                *irq = tmp;
         }
         return 0;
 }