[PATCH 11/17] firmware: Load from global search path

[Sascha Hauer]

We have a global firmware search path, so use it. This removes the
path argument from of_firmware_load_overlay(). blspec already extends
the global firmware search path, so the path is not needed there.
The of_overlay command has an option for specifying the search path,
this is simply ignored from now on in favour for the global search path.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 commands/of_overlay.c    | 13 +++++--------
 common/blspec.c          | 11 +----------
 drivers/of/of_firmware.c | 25 ++++---------------------
 include/of.h             |  4 ++--
 4 files changed, 12 insertions(+), 41 deletions(-)

diff --git a/commands/of_overlay.c b/commands/of_overlay.c
index 9a4c008efc..9b1cc6e8c7 100644
--- a/commands/of_overlay.c
+++ b/commands/of_overlay.c
@@ -16,13 +16,12 @@ static int do_of_overlay(int argc, char *argv[])
 	int opt, ret;
 	struct fdt_header *fdt;
 	struct device_node *overlay;
-	const char *search_path = NULL;
 	size_t size;
 
 	while ((opt = getopt(argc, argv, "S:")) > 0) {
 		switch (opt) {
 		case 'S':
-			search_path = optarg;
+			/* Ignore for compatibility */
 			break;
 		default:
 			return COMMAND_ERROR_USAGE;
@@ -43,11 +42,9 @@ static int do_of_overlay(int argc, char *argv[])
 	if (IS_ERR(overlay))
 		return PTR_ERR(overlay);
 
-	if (search_path) {
-		ret = of_firmware_load_overlay(overlay, search_path);
-		if (ret)
-			goto err;
-	}
+	ret = of_firmware_load_overlay(overlay);
+	if (ret)
+		goto err;
 
 	ret = of_register_overlay(overlay);
 	if (ret) {
@@ -64,7 +61,7 @@ err:
 
 BAREBOX_CMD_HELP_START(of_overlay)
 BAREBOX_CMD_HELP_TEXT("Options:")
-BAREBOX_CMD_HELP_OPT("-S path", "load firmware using this search path")
+BAREBOX_CMD_HELP_OPT("-S path", "ignored")
 BAREBOX_CMD_HELP_END
 
 BAREBOX_CMD_START(of_overlay)
diff --git a/common/blspec.c b/common/blspec.c
index 14e3238c0f..d771176a45 100644
--- a/common/blspec.c
+++ b/common/blspec.c
@@ -39,7 +39,6 @@ static int blspec_apply_oftree_overlay(char *file, const char *abspath,
 	struct fdt_header *fdt;
 	struct device_node *overlay;
 	char *path;
-	char *firmware_path;
 	size_t size;
 
 	path = basprintf("%s/%s", abspath, file);
@@ -64,15 +63,7 @@ static int blspec_apply_oftree_overlay(char *file, const char *abspath,
 		goto out;
 	}
 
-	/*
-	 * Unfortunately the device tree overlay contains only the filename of
-	 * the firmware and relies on the firmware search paths to find the
-	 * actual file. Use /lib/firmware in the Linux root directory and hope
-	 * for the best.
-	 */
-	firmware_path = basprintf("%s/%s", abspath, "/lib/firmware");
-	ret = of_firmware_load_overlay(overlay, firmware_path);
-	free(firmware_path);
+	ret = of_firmware_load_overlay(overlay);
 	if (ret) {
 		pr_warn("failed to load firmware: skip overlay \"%s\"\n", path);
 		of_delete_node(overlay);
diff --git a/drivers/of/of_firmware.c b/drivers/of/of_firmware.c
index 096f84572e..12ce1d95d0 100644
--- a/drivers/of/of_firmware.c
+++ b/drivers/of/of_firmware.c
@@ -6,10 +6,6 @@
 #include <firmware.h>
 #include <of.h>
 
-struct overlay_info {
-	const char *firmware_path;
-};
-
 static struct firmware_mgr *of_node_get_mgr(struct device_node *np)
 {
 	struct device_node *mgr_node;
@@ -26,12 +22,9 @@ static struct firmware_mgr *of_node_get_mgr(struct device_node *np)
 }
 
 static int load_firmware(struct device_node *target,
-			 struct device_node *fragment, void *data)
+			 struct device_node *fragment, void *unused)
 {
-	struct overlay_info *info = data;
 	const char *firmware_name;
-	const char *firmware_path = info->firmware_path;
-	char *firmware;
 	int err;
 	struct firmware_mgr *mgr;
 
@@ -50,22 +43,13 @@ static int load_firmware(struct device_node *target,
 	if (!mgr)
 		return -EINVAL;
 
-	firmware = basprintf("%s/%s", firmware_path, firmware_name);
-	if (!firmware)
-		return -ENOMEM;
-
-	err = firmwaremgr_load_file(mgr, firmware);
-
-	free(firmware);
+	err = firmwaremgr_load_file(mgr, firmware_name);
 
 	return err;
 }
 
-int of_firmware_load_overlay(struct device_node *overlay, const char *path)
+int of_firmware_load_overlay(struct device_node *overlay)
 {
-	struct overlay_info info = {
-		.firmware_path = path,
-	};
 	int err;
 	struct device_node *root;
 	struct device_node *resolved;
@@ -81,8 +65,7 @@ int of_firmware_load_overlay(struct device_node *overlay, const char *path)
 	 */
 	ovl = resolved ? resolved : overlay;
 
-	err = of_process_overlay(root, ovl,
-				 load_firmware, &info);
+	err = of_process_overlay(root, ovl, load_firmware, NULL);
 
 	if (resolved)
 		of_delete_node(resolved);
diff --git a/include/of.h b/include/of.h
index e43e225338..56291b9801 100644
--- a/include/of.h
+++ b/include/of.h
@@ -1033,7 +1033,7 @@ int of_process_overlay(struct device_node *root,
 				   struct device_node *overlay, void *data),
 		    void *data);
 
-int of_firmware_load_overlay(struct device_node *overlay, const char *path);
+int of_firmware_load_overlay(struct device_node *overlay);
 #else
 static inline struct device_node *of_resolve_phandles(struct device_node *root,
 					const struct device_node *overlay)
@@ -1067,7 +1067,7 @@ static inline int of_process_overlay(struct device_node *root,
 	return -ENOSYS;
 }
 
-static inline int of_firmware_load_overlay(struct device_node *overlay, const char *path)
+static inline int of_firmware_load_overlay(struct device_node *overlay)
 {
 	return -ENOSYS;
 }
-- 
2.29.2