of: Add helper for printing an of_phandle_args structure

It is sometimes useful for debug to get the contents of an
of_phandle_args structure out into the kernel log.

Signed-off-by: Grant Likely <grant.likely@linaro.org>

2 files changed, 12 insertions, 3 deletions

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 3ae106d89791..021db96245e7 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1185,6 +1185,15 @@ int of_property_count_strings(struct device_node *np, const char *propname)
 }
 EXPORT_SYMBOL_GPL(of_property_count_strings);
 
+void of_print_phandle_args(const char *msg, const struct of_phandle_args *args)
+{
+        int i;
+        printk("%s %s", msg, of_node_full_name(args->np));
+        for (i = 0; i < args->args_count; i++)
+                printk(i ? ",%08x" : ":%08x", args->args[i]);
+        printk("\n");
+}
+
 static int __of_parse_phandle_with_args(const struct device_node *np,
                                         const char *list_name,
                                         const char *cells_name,
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 0ed5ed4a5f9b..ddea945ec29e 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -101,9 +101,9 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
         u32 intsize = 1, addrsize, newintsize = 0, newaddrsize = 0;
         int imaplen, match, i;
 
-        pr_debug("of_irq_parse_raw: par=%s,intspec=[0x%08x 0x%08x...],ointsize=%d\n",
-                 of_node_full_name(out_irq->np), out_irq->args[0], out_irq->args[1],
-                 out_irq->args_count);
+#ifdef DEBUG
+        of_print_phandle_args("of_irq_parse_raw: ", out_irq);
+#endif
 
         ipar = of_node_get(out_irq->np);