ssb-pcicore: Fix IRQ-vector init on embedded devices

On embedded devices we must not route the interrupts through
the PCI core, if our host-bus is not PCI.

Reported-by: Steve Brown <sbrown@cortland.com>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/ssb/driver_pcicore.c b/drivers/ssb/driver_pcicore.c
index d28c53868093..538c570df337 100644
--- a/drivers/ssb/driver_pcicore.c
+++ b/drivers/ssb/driver_pcicore.c
@@ -537,6 +537,13 @@ int ssb_pcicore_dev_irqvecs_enable(struct ssb_pcicore *pc,
         int err = 0;
         u32 tmp;
 
+        if (dev->bus->bustype != SSB_BUSTYPE_PCI) {
+                /* This SSB device is not on a PCI host-bus. So the IRQs are
+                 * not routed through the PCI core.
+                 * So we must not enable routing through the PCI core. */
+                goto out;
+        }
+
         if (!pdev)
                 goto out;
         bus = pdev->bus;