pnpbios: bail out on strange errors

A small number of systems respond to PnP dock queries with bogus values.
This causes us to keep logging an error every 2 seconds. Instead of trying
again just assume the BIOS is crapware and doesn't actually have dock
functionality.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/pnp/pnpbios/core.c b/drivers/pnp/pnpbios/core.c
index 074569e77d22..facd43b8516c 100644
--- a/drivers/pnp/pnpbios/core.c
+++ b/drivers/pnp/pnpbios/core.c
@@ -181,7 +181,8 @@ static int pnp_dock_thread(void *unused)
                         break;
                 default:
                         pnpbios_print_status("pnp_dock_thread", status);
-                        continue;
+                        printk(KERN_WARNING "PnPBIOS: disabling dock monitoring.\n");
+                        complete_and_exit(&unload_sem, 0);
                 }
                 if (d != docked) {
                         if (pnp_dock_event(d, &now) == 0) {