x86/dtb: make irq host list accessible

From: Torben Hohn <[email protected]>

There is an gpio irq chip comming which needs this from the outside. There is no EXPORT_SYMBOL because this does not yet work in modules.

Signed-off-by Torben Hohn <[email protected]>

Signed-off-by Sebastian Andrzej Siewior <[email protected]>

---
 arch/x86/include/asm/irq_controller.h |    2 ++
 arch/x86/kernel/devicetree.c          |   15 +++++++++++----
 2 files changed, 13 insertions(+), 4 deletions(-)

arch/x86/include/asm/irq_controller.h +2 -0

index 423bbbd..04fecc0 100644
@@ -9,4 +9,6 @@ struct irq_domain {
 	struct list_head l;
 };
 
+extern void irq_add_of_interrupt_host(struct irq_domain *ih);
+extern void irq_remove_of_interrupt_host(struct irq_domain *ih);
 #endif

arch/x86/kernel/devicetree.c +11 -4

index e90f084..58c4208 100644
@@ -26,8 +26,7 @@ static DEFINE_RAW_SPINLOCK(big_irq_lock);
 
 int __initdata of_ioapic;
 
-#ifdef CONFIG_X86_IO_APIC
-static void add_interrupt_host(struct irq_domain *ih)
+void irq_add_of_interrupt_host(struct irq_domain *ih)
 {
 	unsigned long flags;
 

@@ -35,7 +34,15 @@ static void add_interrupt_host(struct irq_domain *ih)
 	list_add(&ih->l, &irq_domains);
 	raw_spin_unlock_irqrestore(&big_irq_lock, flags);
 }
-#endif
+
+void irq_remove_of_interrupt_host(struct irq_domain *ih)
+{
+	unsigned long flags;
+
+	raw_spin_lock_irqsave(&big_irq_lock, flags);
+	list_del(&ih->l);
+	raw_spin_unlock_irqrestore(&big_irq_lock, flags);
+}
 
 static struct irq_domain *get_ih_from_node(struct device_node *controller)
 {

@@ -415,7 +422,7 @@ static void __init ioapic_add_ofnode(struct device_node *np)
 			id->controller = np;
 			id->xlate = ioapic_xlate;
 			id->priv = (void *)i;
-			add_interrupt_host(id);
+			irq_add_of_interrupt_host(id);
 			return;
 		}
 	}

Signature · 1 line

1.7.4.4

Quoted 5 lines · Sebastian Andrzej Siewior

From: Torben Hohn <[email protected]>

There is an gpio irq chip comming which needs this from the outside. There is no EXPORT_SYMBOL because this does not yet work in modules.

Can you rework this to sit on top of the of_irq_domain series I sent out yesterday? I *really* hope to get of_irq_domain merged into .40, but this change would conflict.

Thanks,
g.

Quoted 6 lines · * Grant Likely | 2011-04-29 16:26:00 [-0600]:

Quoted 5 lines · Sebastian Andrzej Siewior

From: Torben Hohn <[email protected]>

There is an gpio irq chip comming which needs this from the outside. There is no EXPORT_SYMBOL because this does not yet work in modules.

Quoted 3 lines

Can you rework this to sit on top of the of_irq_domain series I sent out yesterday? I *really* hope to get of_irq_domain merged into .40, but this change would conflict.

This patch should be obsolete with of_irq_domain beeing generic now. Could you please take look at the gpio driver? If there is nothing obvious wrong I would rework it to work with of_irq_domain() and repost.

Quoted 4 lines

This patch should be obsolete with of_irq_domain beeing generic now. Could you please take look at the gpio driver? If there is nothing obvious wrong I would rework it to work with of_irq_domain() and repost.

okay, will do.

g.

Quoted 6 lines · Grant Likely

Quoted 4 lines

This patch should be obsolete with of_irq_domain beeing generic now. Could you please take look at the gpio driver? If there is nothing obvious wrong I would rework it to work with of_irq_domain() and repost.

okay, will do.

Ping :)