[PATCH v5 11/11] lib/test_printf: Add tests for %pfw printk modifier

[Sakari Ailus]

Add a test for the %pfw printk modifier using software nodes.

Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
---
 lib/test_printf.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/lib/test_printf.c b/lib/test_printf.c
index 944eb50f38625..9c6d716979fb1 100644
--- a/lib/test_printf.c
+++ b/lib/test_printf.c
@@ -22,6 +22,8 @@
 #include <linux/gfp.h>
 #include <linux/mm.h>
 
+#include <linux/property.h>
+
 #include "../tools/testing/selftests/kselftest_module.h"
 
 #define BUF_SIZE 256
@@ -588,6 +590,40 @@ flags(void)
        kfree(cmp_buffer);
 }
 
+static void __init fwnode_pointer(void)
+{
+       const struct software_node softnodes[] = {
+               { .name = "first", },
+               { .name = "second", .parent = &softnodes[0], },
+               { .name = "third", .parent = &softnodes[1], },
+               { NULL /* Guardian */ },
+       };
+       const char * const full_name = "/second/third";
+       const char * const full_name_second = "/second";
+       const char * const second_name = "second";
+       const char * const third_name = "third";
+       int rval;
+
+       rval = software_node_register_nodes(softnodes);
+       if (rval) {
+               pr_warn("cannot register softnodes; rval %d\n", rval);
+               return;
+       }
+
+       test(full_name_second, "%pfw",
+            software_node_fwnode(&softnodes[ARRAY_SIZE(softnodes) - 3]));
+       test(full_name, "%pfw",
+            software_node_fwnode(&softnodes[ARRAY_SIZE(softnodes) - 2]));
+       test(full_name, "%pfwf",
+            software_node_fwnode(&softnodes[ARRAY_SIZE(softnodes) - 2]));
+       test(second_name, "%pfwP",
+            software_node_fwnode(&softnodes[ARRAY_SIZE(softnodes) - 3]));
+       test(third_name, "%pfwP",
+            software_node_fwnode(&softnodes[ARRAY_SIZE(softnodes) - 2]));
+
+       software_node_unregister_nodes(softnodes);
+}
+
 static void __init
 test_pointer(void)
 {
@@ -610,6 +646,7 @@ test_pointer(void)
        bitmap();
        netdev_features();
        flags();
+       fwnode_pointer();
 }
 
 static void __init selftest(void)
-- 
2.20.1