From d761f0c521868e59cd0bc59159cbdb4686fe210d Mon Sep 17 00:00:00 2001
From: Michal Simek <monstr@monstr.eu>
Date: Tue, 10 Jan 2012 12:15:58 +0100
Subject: [PATCH 1/2] microblaze: Add topology init

Init topology subsystem by cpu registration.

Microblaze Linux kernel is fauling by
"Oops: kernel access of bad area, sig: 11"
because cpu is not initialized.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/setup.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c
index 604cd9dd1333..d4fc1a971779 100644
--- a/arch/microblaze/kernel/setup.c
+++ b/arch/microblaze/kernel/setup.c
@@ -26,6 +26,7 @@
 #include <linux/cache.h>
 #include <linux/of_platform.h>
 #include <linux/dma-mapping.h>
+#include <linux/cpu.h>
 #include <asm/cacheflush.h>
 #include <asm/entry.h>
 #include <asm/cpuinfo.h>
@@ -226,5 +227,23 @@ static int __init setup_bus_notifier(void)
 
 	return 0;
 }
-
 arch_initcall(setup_bus_notifier);
+
+static DEFINE_PER_CPU(struct cpu, cpu_devices);
+
+static int __init topology_init(void)
+{
+	int i, ret;
+
+	for_each_present_cpu(i) {
+		struct cpu *c = &per_cpu(cpu_devices, i);
+
+		ret = register_cpu(c, i);
+		if (ret)
+			printk(KERN_WARNING "topology_init: register_cpu %d "
+						"failed (%d)\n", i, ret);
+	}
+
+	return 0;
+}
+subsys_initcall(topology_init);

From 7f788ec07d169123bb1bd14e6221a2b228079ce8 Mon Sep 17 00:00:00 2001
From: Michal Simek <monstr@monstr.eu>
Date: Thu, 12 Jan 2012 09:18:03 +0100
Subject: [PATCH 2/2] USB: EHCI: Don't use NO_IRQ in xilinx ehci driver

Drivers shouldn't use NO_IRQ. This driver is used
by Microblaze and PPC. PPC defines NO_IRQ as 0
and Microblaze has removed it.

Signed-off-by: Michal Simek <monstr@monstr.eu>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
CC: Greg Kroah-Hartman <gregkh@suse.de>
CC: Grant Likely <grant.likely@secretlab.ca>
CC: linux-usb@vger.kernel.org
CC: devicetree-discuss@lists.ozlabs.org
---
 drivers/usb/host/ehci-xilinx-of.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/ehci-xilinx-of.c b/drivers/usb/host/ehci-xilinx-of.c
index 32793ce3d9e9..9c2cc4633894 100644
--- a/drivers/usb/host/ehci-xilinx-of.c
+++ b/drivers/usb/host/ehci-xilinx-of.c
@@ -183,7 +183,7 @@ static int __devinit ehci_hcd_xilinx_of_probe(struct platform_device *op)
 	}
 
 	irq = irq_of_parse_and_map(dn, 0);
-	if (irq == NO_IRQ) {
+	if (!irq) {
 		printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
 		rv = -EBUSY;
 		goto err_irq;