ACPICA: Fixes for size of StartDependent resource descriptor

Fixed a couple of size calculation issues with the variable-length
Start Dependent resource descriptor.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/acpi/resources/rscalc.c b/drivers/acpi/resources/rscalc.c
index db0a835e331..d801823de01 100644
--- a/drivers/acpi/resources/rscalc.c
+++ b/drivers/acpi/resources/rscalc.c
@@ -213,11 +213,22 @@ acpi_rs_get_aml_length(struct acpi_resource * resource, acpi_size * size_needed)
                 switch (resource->type) {
                 case ACPI_RESOURCE_TYPE_IRQ:
 
+                        /* Length can be 3 or 2 */
+
                         if (resource->data.irq.descriptor_length == 2) {
                                 total_size--;
                         }
                         break;
 
+                case ACPI_RESOURCE_TYPE_START_DEPENDENT:
+
+                        /* Length can be 1 or 0 */
+
+                        if (resource->data.irq.descriptor_length == 0) {
+                                total_size--;
+                        }
+                        break;
+
                 case ACPI_RESOURCE_TYPE_VENDOR:
                         /*
                          * Vendor Defined Resource: