From: Marc Zyngier <marc.zyngier@arm.com>
Date: Fri, 12 May 2017 12:55:36 +0100
Subject: irqdomain: Let irq_domain_mapping display ACPI fwnode attributes
Git-commit: 2370c00dc7232d0c4af224e7730b4de031f3b1a0
Patch-mainline: v4.13-rc1
References: fate#326250
If the system is using ACPI, there is no of_node to display. But ACPI can
use a struct irqchip_fwid as a domain identifier, and it can be used to
display the name contained in that structure.
The output on such a system will look like this:
pMSI 0 0 0 irqchip@00000000e1180000
MSI 37 0 0 irqchip@00000000e1180000
GICv2m 37 0 0 irqchip@00000000e1180000
GICv2 448 448 0 irqchip@ffff000008003000
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/20170512115538.10767-3-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
kernel/irq/irqdomain.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 1f6cd2cacf74..70b9da72018b 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -801,15 +801,26 @@ static int virq_debug_show(struct seq_file *m, void *private)
mutex_lock(&irq_domain_mutex);
list_for_each_entry(domain, &irq_domain_list, link) {
struct device_node *of_node;
+ const char *name;
+
int count = 0;
+
of_node = irq_domain_get_of_node(domain);
+ if (of_node)
+ name = of_node_full_name(of_node);
+ else if (is_fwnode_irqchip(domain->fwnode))
+ name = container_of(domain->fwnode, struct irqchip_fwid,
+ fwnode)->name;
+ else
+ name = "";
+
radix_tree_for_each_slot(slot, &domain->revmap_tree, &iter, 0)
count++;
seq_printf(m, "%c%-16s %6u %10u %10u %s\n",
domain == irq_default_domain ? '*' : ' ', domain->name,
domain->revmap_size + count, domain->revmap_size,
domain->revmap_direct_max_irq,
- of_node ? of_node_full_name(of_node) : "");
+ name);
}
mutex_unlock(&irq_domain_mutex);
--
2.19.1