1 files changed, 12 insertions, 0 deletions

diff --git a/kernel/irq/debugfs.c b/kernel/irq/debugfs.c
index c3fdb36dec30..7f608ac39653 100644
--- a/kernel/irq/debugfs.c
+++ b/kernel/irq/debugfs.c
@@ -81,6 +81,8 @@ irq_debug_show_data(struct seq_file *m, struct irq_data *data, int ind)
                    data->domain ? data->domain->name : "");
         seq_printf(m, "%*shwirq:   0x%lx\n", ind + 1, "", data->hwirq);
         irq_debug_show_chip(m, data, ind + 1);
+        if (data->domain && data->domain->ops && data->domain->ops->debug_show)
+                data->domain->ops->debug_show(m, NULL, data, ind + 1);
 #ifdef  CONFIG_IRQ_DOMAIN_HIERARCHY
         if (!data->parent_data)
                 return;
@@ -149,6 +151,7 @@ static int irq_debug_show(struct seq_file *m, void *p)
         raw_spin_lock_irq(&desc->lock);
         data = irq_desc_get_irq_data(desc);
         seq_printf(m, "handler:  %pf\n", desc->handle_irq);
+        seq_printf(m, "device:   %s\n", desc->dev_name);
         seq_printf(m, "status:   0x%08x\n", desc->status_use_accessors);
         irq_debug_show_bits(m, 0, desc->status_use_accessors, irqdesc_states,
                             ARRAY_SIZE(irqdesc_states));
@@ -226,6 +229,15 @@ static const struct file_operations dfs_irq_ops = {
         .release        = single_release,
 };
 
+void irq_debugfs_copy_devname(int irq, struct device *dev)
+{
+        struct irq_desc *desc = irq_to_desc(irq);
+        const char *name = dev_name(dev);
+
+        if (name)
+                desc->dev_name = kstrdup(name, GFP_KERNEL);
+}
+
 void irq_add_debugfs_entry(unsigned int irq, struct irq_desc *desc)
 {
         char name [10];