ssb: Ignore dangling ethernet cores on wireless devices

Some Broadcom based wireless devices contain dangling ethernet cores.
This triggers the ssb probing mechanism and tries to load the b44 driver
on this core.
Ignore the dangling core in the ssb core scanning code to avoid
access to the core and failure of b44 probing.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/ssb/scan.c b/drivers/ssb/scan.c
index 5a0985d4ce15..29884c00c4d5 100644
--- a/drivers/ssb/scan.c
+++ b/drivers/ssb/scan.c
@@ -420,6 +420,16 @@ int ssb_bus_scan(struct ssb_bus *bus,
                         bus->pcicore.dev = dev;
 #endif /* CONFIG_SSB_DRIVER_PCICORE */
                         break;
+                case SSB_DEV_ETHERNET:
+                        if (bus->bustype == SSB_BUSTYPE_PCI) {
+                                if (bus->host_pci->vendor == PCI_VENDOR_ID_BROADCOM &&
+                                    (bus->host_pci->device & 0xFF00) == 0x4300) {
+                                        /* This is a dangling ethernet core on a
+                                         * wireless device. Ignore it. */
+                                        continue;
+                                }
+                        }
+                        break;
                 default:
                         break;
                 }