irqdomain: Add a name field
This patch adds a name field to the irq_domain structure to help mere
mortals understand the mappings between irq domains and virqs. It also
converts a number of places that have open-coded some kind of fudging
an irqdomain name to use the new field. This means a more consistent
display of names in irq domain log messages and debugfs output.
Signed-off-by: Grant Likely <grant.likely@linaro.org>
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 1ac8cf4..b1b5e67 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -410,12 +410,15 @@
*/
if (ret != -EPERM) {
pr_info("%s didn't like hwirq-0x%lx to VIRQ%i mapping (rc=%d)\n",
- of_node_full_name(domain->of_node), hwirq, virq, ret);
+ domain->name, hwirq, virq, ret);
}
irq_data->domain = NULL;
irq_data->hwirq = 0;
continue;
}
+ /* If not already assigned, give the domain the chip's name */
+ if (!domain->name && irq_data->chip)
+ domain->name = irq_data->chip->name;
}
switch (domain->revmap_type) {
@@ -708,8 +711,6 @@
{
unsigned long flags;
struct irq_desc *desc;
- const char *p;
- static const char none[] = "none";
void *data;
int i;
@@ -731,20 +732,12 @@
seq_printf(m, "0x%05lx ", desc->irq_data.hwirq);
chip = irq_desc_get_chip(desc);
- if (chip && chip->name)
- p = chip->name;
- else
- p = none;
- seq_printf(m, "%-15s ", p);
+ seq_printf(m, "%-15s ", (chip && chip->name) ? chip->name : "none");
data = irq_desc_get_chip_data(desc);
seq_printf(m, data ? "0x%p " : " %p ", data);
- if (desc->irq_data.domain)
- p = of_node_full_name(desc->irq_data.domain->of_node);
- else
- p = none;
- seq_printf(m, "%s\n", p);
+ seq_printf(m, "%s\n", desc->irq_data.domain->name);
}
raw_spin_unlock_irqrestore(&desc->lock, flags);