[ACPI] HPET driver now checks for acpi_register_gsi() errors

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 5ec732e..a8d4c47 100644 (file)
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -906,11 +906,15 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data)
                if (irqp->number_of_interrupts > 0) {
                        hdp->hd_nirqs = irqp->number_of_interrupts;
 
-                       for (i = 0; i < hdp->hd_nirqs; i++)
-                               hdp->hd_irq[i] =
+                       for (i = 0; i < hdp->hd_nirqs; i++) {
+                               int rc =
                                    acpi_register_gsi(irqp->interrupts[i],
                                                      irqp->edge_level,
                                                      irqp->active_high_low);
+                               if (rc < 0)
+                                       return AE_ERROR;
+                               hdp->hd_irq[i] = rc;
+                       }
                }
        }