genirq/debugfs: Use irq_print_chip() when provided by irqchip

Since irqchips have the option to implement irq_print_chip, use this
when available to output the irqchip name in debugfs.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220215112154.1360040-1-maz@kernel.org

diff --git a/kernel/irq/debugfs.c b/kernel/irq/debugfs.c
index e4cff35..2b43f5f 100644 (file)
--- a/kernel/irq/debugfs.c
+++ b/kernel/irq/debugfs.c
@@ -69,8 +69,12 @@ irq_debug_show_chip(struct seq_file *m, struct irq_data *data, int ind)
                seq_printf(m, "chip: None\n");
                return;
        }
-       seq_printf(m, "%*schip:    %s\n", ind, "", chip->name);
-       seq_printf(m, "%*sflags:   0x%lx\n", ind + 1, "", chip->flags);
+       seq_printf(m, "%*schip:    ", ind, "");
+       if (chip->irq_print_chip)
+               chip->irq_print_chip(data, m);
+       else
+               seq_printf(m, "%s", chip->name);
+       seq_printf(m, "\n%*sflags:   0x%lx\n", ind + 1, "", chip->flags);
        irq_debug_show_bits(m, ind, chip->flags, irqchip_flags,
                            ARRAY_SIZE(irqchip_flags));
 }