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authorMarc Zyngier <marc.zyngier@arm.com>2017-05-12 12:55:36 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-05-22 22:29:44 +0200
commit2370c00dc7232d0c4af224e7730b4de031f3b1a0 (patch)
tree153759e63e9280167c98d038b90f37cf59993362 /kernel/irq/irqdomain.c
parentfe17a42e704a64477b15bb2cf8366fe3e5119aff (diff)
downloadlinux-2370c00dc7232d0c4af224e7730b4de031f3b1a0.tar.bz2
irqdomain: Let irq_domain_mapping display ACPI fwnode attributes
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>
Diffstat (limited to 'kernel/irq/irqdomain.c')
-rw-r--r--kernel/irq/irqdomain.c13
1 files changed, 12 insertions, 1 deletions
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);