From: Thomas Gleixner <redacted>

On Mon, 18 Jun 2012, leroy christophe wrote:

Hello,

I'm trying to use the rt10 patch on a 3.4.2 kernel on a powerpc (MPC8xx)
system, and I'm having the following Oops during Irq initialisation. This
happens with CONFIG_PREEMPT_RT_FULL.
It doesn't happen with CONFIG_PREEMPT__LL

May someone help ?

Does the following uncompiled and untested patch fix it for you ?

Thanks,

	tglx

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: leroy christophe <redacted>
---
 arch/powerpc/platforms/8xx/m8xx_setup.c |    1 +
 arch/powerpc/sysdev/cpm1.c              |    1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/powerpc/platforms/8xx/m8xx_setup.c b/arch/powerpc/platforms/8xx/m8xx_setup.c
index 1e12108..806cbbd 100644
--- a/arch/powerpc/platforms/8xx/m8xx_setup.c
+++ b/arch/powerpc/platforms/8xx/m8xx_setup.c

@@ -43,6 +43,7 @@ static irqreturn_t timebase_interrupt(int irq, void *dev)
 
 static struct irqaction tbint_irqaction = {
 	.handler = timebase_interrupt,
+	.flags = IRQF_NO_THREAD,
 	.name = "tbint",
 };
 

diff --git a/arch/powerpc/sysdev/cpm1.c b/arch/powerpc/sysdev/cpm1.c
index d4fa03f..5e6ff38 100644
--- a/arch/powerpc/sysdev/cpm1.c
+++ b/arch/powerpc/sysdev/cpm1.c

@@ -120,6 +120,7 @@ static irqreturn_t cpm_error_interrupt(int irq, void *dev)
 
 static struct irqaction cpm_error_irqaction = {
 	.handler = cpm_error_interrupt,
+	.flags = IRQF_NO_THREAD,
 	.name = "error",
 };
 

-- 
1.7.10