x86/uv: Create named irq domain

Use the fwnode to create a named domain so diagnosis works.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20170619235443.907511074@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/platform/uv/uv_irq.c b/arch/x86/platform/uv/uv_irq.c
index 776c6592136cd96e7d667ec6beb37d0944523684..03fc397335b7482e9302f7d7f6b85d9c0f553df5 100644 (file)
--- a/arch/x86/platform/uv/uv_irq.c
+++ b/arch/x86/platform/uv/uv_irq.c
@@ -160,13 +160,21 @@ static struct irq_domain *uv_get_irq_domain(void)
 {
        static struct irq_domain *uv_domain;
        static DEFINE_MUTEX(uv_lock);
+       struct fwnode_handle *fn;
 
        mutex_lock(&uv_lock);
-       if (uv_domain == NULL) {
-               uv_domain = irq_domain_add_tree(NULL, &uv_domain_ops, NULL);
-               if (uv_domain)
-                       uv_domain->parent = x86_vector_domain;
-       }
+       if (uv_domain)
+               goto out;
+
+       fn = irq_domain_alloc_named_fwnode("UV-CORE");
+       if (!fn)
+               goto out;
+
+       uv_domain = irq_domain_create_tree(fn, &uv_domain_ops, NULL);
+       irq_domain_free_fwnode(fn);
+       if (uv_domain)
+               uv_domain->parent = x86_vector_domain;
+out:
        mutex_unlock(&uv_lock);
 
        return uv_domain;