1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/acpi/resources/rscalc.c b/drivers/acpi/resources/rscalc.c
index dcc51e92ac92..db0a835e3317 100644
--- a/drivers/acpi/resources/rscalc.c
+++ b/drivers/acpi/resources/rscalc.c
@@ -211,6 +211,13 @@ acpi_rs_get_aml_length(struct acpi_resource * resource, acpi_size * size_needed)
                  * variable-length fields
                  */
                 switch (resource->type) {
+                case ACPI_RESOURCE_TYPE_IRQ:
+
+                        if (resource->data.irq.descriptor_length == 2) {
+                                total_size--;
+                        }
+                        break;
+
                 case ACPI_RESOURCE_TYPE_VENDOR:
                         /*
                          * Vendor Defined Resource: