[PATCH 4/8] of: overlay: make search dir/path more generic

[Marco Felsch <m.felsch@pengutronix.de>]

In preparation of adding support for FIT image overlay handling the
global.of.overlay.dir can be reused if we rename it to a more generic
global.of.overlay.path since it does not imply an directory.

This commit adds the ground work by deprecating the old
global.of.overlay.dir and moving the directory handling into a separate
of_overlay_global_fixup_dir() helper.

No functional change.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
---
 drivers/of/overlay.c | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index b688e708c382..e9fd5c0a1f7d 100644
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -398,7 +398,7 @@ int of_register_overlay(struct device_node *overlay)
 
 static char *of_overlay_fitconfigpattern;
 static char *of_overlay_pattern;
-static char *of_overlay_dir;
+static char *of_overlay_path;
 static char *of_overlay_basedir;
 
 /**
@@ -453,18 +453,18 @@ static int of_overlay_apply_dir(struct device_node *root, const char *dirname,
 	return ret;
 }
 
-static int of_overlay_global_fixup(struct device_node *root, void *data)
+static int of_overlay_global_fixup_dir(struct device_node *root, const char *ovl_dir)
 {
 	char *dir;
 	int ret;
 
-	if (*of_overlay_dir == '/')
-		return of_overlay_apply_dir(root, of_overlay_dir, true);
+	if (*ovl_dir == '/')
+		return of_overlay_apply_dir(root, ovl_dir, true);
 
-	if (*of_overlay_dir == '\0')
+	if (*ovl_dir == '\0')
 		return 0;
 
-	dir = concat_path_file(of_overlay_basedir, of_overlay_dir);
+	dir = concat_path_file(of_overlay_basedir, ovl_dir);
 
 	ret = of_overlay_apply_dir(root, dir, true);
 
@@ -473,6 +473,11 @@ static int of_overlay_global_fixup(struct device_node *root, void *data)
 	return ret;
 }
 
+static int of_overlay_global_fixup(struct device_node *root, void *data)
+{
+	return of_overlay_global_fixup_dir(root, of_overlay_path);
+}
+
 /**
  * of_overlay_register_filter - register a new overlay filter
  * @filter: The new filter
@@ -607,10 +612,11 @@ static int of_overlay_init(void)
 	globalvar_add_simple_string("of.overlay.compatible", &of_overlay_compatible);
 	globalvar_add_simple_string("of.overlay.pattern", &of_overlay_pattern);
 	globalvar_add_simple_string("of.overlay.filter", &of_overlay_filter);
-	globalvar_add_simple_string("of.overlay.dir", &of_overlay_dir);
+	globalvar_add_simple_string("of.overlay.path", &of_overlay_path);
 	globalvar_add_simple_string("of.overlay.fitconfigpattern", &of_overlay_fitconfigpattern);
 
 	globalvar_alias_deprecated("of.overlay.filepattern", "of.overlay.pattern");
+	globalvar_alias_deprecated("of.overlay.dir", "of.overlay.path");
 
 	of_overlay_register_filter(&of_overlay_pattern_filter);
 	of_overlay_register_filter(&of_overlay_filepattern_filter);
@@ -624,6 +630,6 @@ device_initcall(of_overlay_init);
 
 BAREBOX_MAGICVAR(global.of.overlay.compatible, "space separated list of compatibles an overlay must match");
 BAREBOX_MAGICVAR(global.of.overlay.pattern, "space separated list of filepatterns an overlay must match");
-BAREBOX_MAGICVAR(global.of.overlay.dir, "Directory to look for dt overlays");
+BAREBOX_MAGICVAR(global.of.overlay.path, "Path to look for dt overlays");
 BAREBOX_MAGICVAR(global.of.overlay.filter, "space separated list of filters");
 BAREBOX_MAGICVAR(global.of.overlay.fitconfigpattern, "FIT config node name pattern to look for dt overlays");
-- 
2.39.2