devicetree: add helper inline for retrieving a node's full name

The pattern (np ? np->full_name : "<none>") is rather common in the
kernel, but can also make for quite long lines.  This patch adds a new
inline function, of_node_full_name() so that the test for a valid node
pointer doesn't need to be open coded at all call sites.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>

2 files changed, 2 insertions, 2 deletions

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 85757952f12d..9ec0a2f1b028 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1173,7 +1173,7 @@ static void of_alias_add(struct alias_prop *ap, struct device_node *np,
         ap->stem[stem_len] = 0;
         list_add_tail(&ap->link, &aliases_lookup);
         pr_debug("adding DT alias:%s: stem=%s id=%i node=%s\n",
-                 ap->alias, ap->stem, ap->id, np ? np->full_name : NULL);
+                 ap->alias, ap->stem, ap->id, of_node_full_name(np));
 }
 
 /**
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 9cf00602f566..ff8ab7b27373 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -255,7 +255,7 @@ int of_irq_map_raw(struct device_node *parent, const __be32 *intspec,
 
         skiplevel:
                 /* Iterate again with new parent */
-                pr_debug(" -> new parent: %s\n", newpar ? newpar->full_name : "<>");
+                pr_debug(" -> new parent: %s\n", of_node_full_name(newpar));
                 of_node_put(ipar);
                 ipar = newpar;
                 newpar = NULL;