[PATCH 098/173] [PARISC] fix per-cpu flag problem in the cpu affinity checkers

From: Willy Tarreau
Date: Mon Apr 25 2011 - 16:50:07 EST


2.6.27.59-stable review patch. If anyone has any objections, please let us know.

------------------

From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

commit 9804c9eaeacfe78651052c5ddff31099f60ef78c upstream.

The CHECK_IRQ_PER_CPU is wrong, it should be checking
irq_to_desc(irq)->status not just irq.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: James Bottomley <James.Bottomley@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
arch/parisc/kernel/irq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -117,7 +117,7 @@ int cpu_check_affinity(unsigned int irq,
int cpu_dest;

/* timer and ipi have to always be received on all CPUs */
- if (CHECK_IRQ_PER_CPU(irq)) {
+ if (CHECK_IRQ_PER_CPU(irq_to_desc(irq)->status)) {
/* Bad linux design decision. The mask has already
* been set; we must reset it */
cpumask_setall(irq_desc[irq].affinity);


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