V4L/DVB (7679): pvrusb2: add DVB API framework

[sfrench/cifs-2.6.git] / drivers / acpi / utils.c

diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index eba55b7d6c95ad63479430fc3c63c57dce3a5b19..44ea60cf21c09c00adc1135394decbb4af2faa1d 100644 (file)
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -407,6 +407,12 @@ acpi_evaluate_reference(acpi_handle handle,
                        break;
                }
 
+               if (!element->reference.handle) {
+                       printk(KERN_WARNING PREFIX "Invalid reference in"
+                              " package %s\n", pathname);
+                       status = AE_NULL_ENTRY;
+                       break;
+               }
                /* Get the  acpi_handle. */
 
                list->handles[i] = element->reference.handle;