powerpc/irq: Dump chip data pointer in virq_mapping

This can be useful for differentiating interrupts on the same host
but with different chip data.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index ea09512a68c3..4f5d6e751a65 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -1086,10 +1086,11 @@ static int virq_debug_show(struct seq_file *m, void *private)
         struct irq_desc *desc;
         const char *p;
         static const char none[] = "none";
+        void *data;
         int i;
 
-        seq_printf(m, "%-5s  %-7s  %-15s  %s\n", "virq", "hwirq",
-                      "chip name", "host name");
+        seq_printf(m, "%-5s  %-7s  %-15s  %-18s  %s\n", "virq", "hwirq",
+                      "chip name", "chip data", "host name");
 
         for (i = 1; i < nr_irqs; i++) {
                 desc = irq_to_desc(i);
@@ -1111,6 +1112,9 @@ static int virq_debug_show(struct seq_file *m, void *private)
                                 p = none;
                         seq_printf(m, "%-15s  ", p);
 
+                        data = irq_desc_get_chip_data(desc);
+                        seq_printf(m, "0x%16p  ", data);
+
                         if (irq_map[i].host && irq_map[i].host->of_node)
                                 p = irq_map[i].host->of_node->full_name;
                         else