From: David Mercado <david.merc...@windriver.com>
Modify irq_set_affinity() to allow usage of bus locks with "slow bus" IRQ
controllers. This only affects those BSPs that use bus locks in their IRQ
controllers, such as the LSI Axxia GIC. The recommendation for this
change originated from Thomax Gleixner at Linutronix.
Signed-off-by: David Mercado <david.merc...@windriver.com>
---
kernel/irq/manage.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 425170d..ddddff0 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -244,16 +244,16 @@ int irq_set_affinity_locked(struct irq_data *data, const
struct cpumask *mask,
int __irq_set_affinity(unsigned int irq, const struct cpumask *mask, bool
force)
{
- struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
+ struct irq_desc *desc = irq_get_desc_buslock(irq, &flags,
+ IRQ_GET_DESC_CHECK_GLOBAL);
int ret;
if (!desc)
return -EINVAL;
- raw_spin_lock_irqsave(&desc->lock, flags);
ret = irq_set_affinity_locked(irq_desc_get_irq_data(desc), mask, force);
- raw_spin_unlock_irqrestore(&desc->lock, flags);
+ irq_put_desc_busunlock(desc, flags);
return ret;
}
--
2.7.4
--
_______________________________________________
linux-yocto mailing list
linux-yocto@yoctoproject.org
https://lists.yoctoproject.org/listinfo/linux-yocto
