Add debug message in case no ACPI handle is found

2012-01-15 10:43:44 +01:00
parent c8b303c36c
commit a904b442af
1 changed files with 4 additions and 1 deletions
--- a/bbswitch.c
+++ b/bbswitch.c
@@ -336,8 +336,11 @@ static int __init bbswitch_init(void) {
        acpi_handle handle;

        handle = DEVICE_ACPI_HANDLE(&pdev->dev);
-        if (!handle)
+        if (!handle) {
+            printk(KERN_WARNING "bbswitch: cannot find ACPI handle for VGA"
+                " device %s\n", dev_name(&pdev->dev));
            continue;
+        }

        acpi_get_name(handle, ACPI_FULL_PATHNAME, &buf);