From 9e095a687b3561972272063260e14ab1bc21de08 Mon Sep 17 00:00:00 2001
From: Michael Buesch <mb@bu3sch.de>
Date: Fri, 4 Jul 2008 23:44:37 +0200
Subject: [PATCH] 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>
---
drivers/ssb/driver_pcicore.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/ssb/driver_pcicore.c b/drivers/ssb/driver_pcicore.c
index d28c53868093c..538c570df3373 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;
--
2.30.2