linux-kernel - [PATCH v2 10/21] of/fdt: remove unused of_scan_flat_dt_by

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Message-Id: <1398215901-25609-11-git-send-email-robherring2@gmail.com>
Date:	Tue, 22 Apr 2014 20:18:10 -0500
From:	Rob Herring <robherring2@...il.com>
To:	Grant Likely <grant.likely@...aro.org>,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Cc:	Rob Herring <robh@...nel.org>
Subject: [PATCH v2 10/21] of/fdt: remove unused of_scan_flat_dt_by_path

From: Rob Herring <robh@...nel.org>

of_scan_flat_dt_by_path is unused anywhere in the kernel, so remove it.

Signed-off-by: Rob Herring <robh@...nel.org>
---
v2: no change

 drivers/of/fdt.c       | 67 --------------------------------------------------
 include/linux/of_fdt.h |  3 ---
 2 files changed, 70 deletions(-)

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 63bdcee..9c85352 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -671,73 +671,6 @@ struct fdt_scan_status {
 	void *data;
 };
 
-/**
- * fdt_scan_node_by_path - iterator for of_scan_flat_dt_by_path function
- */
-static int __init fdt_scan_node_by_path(unsigned long node, const char *uname,
-					int depth, void *data)
-{
-	struct fdt_scan_status *st = data;
-
-	/*
-	 * if scan at the requested fdt node has been completed,
-	 * return -ENXIO to abort further scanning
-	 */
-	if (depth <= st->depth)
-		return -ENXIO;
-
-	/* requested fdt node has been found, so call iterator function */
-	if (st->found)
-		return st->iterator(node, uname, depth, st->data);
-
-	/* check if scanning automata is entering next level of fdt nodes */
-	if (depth == st->depth + 1 &&
-	    strncmp(st->name, uname, st->namelen) == 0 &&
-	    uname[st->namelen] == 0) {
-		st->depth += 1;
-		if (st->name[st->namelen] == 0) {
-			st->found = 1;
-		} else {
-			const char *next = st->name + st->namelen + 1;
-			st->name = next;
-			st->namelen = strcspn(next, "/");
-		}
-		return 0;
-	}
-
-	/* scan next fdt node */
-	return 0;
-}
-
-/**
- * of_scan_flat_dt_by_path - scan flattened tree blob and call callback on each
- *			     child of the given path.
- * @path: path to start searching for children
- * @it: callback function
- * @data: context data pointer
- *
- * This function is used to scan the flattened device-tree starting from the
- * node given by path. It is used to extract information (like reserved
- * memory), which is required on ealy boot before we can unflatten the tree.
- */
-int __init of_scan_flat_dt_by_path(const char *path,
-	int (*it)(unsigned long node, const char *name, int depth, void *data),
-	void *data)
-{
-	struct fdt_scan_status st = {path, 0, -1, 0, it, data};
-	int ret = 0;
-
-	if (initial_boot_params)
-                ret = of_scan_flat_dt(fdt_scan_node_by_path, &st);
-
-	if (!st.found)
-		return -ENOENT;
-	else if (ret == -ENXIO)	/* scan has been completed */
-		return 0;
-	else
-		return ret;
-}
-
 const char * __init of_flat_dt_get_machine_name(void)
 {
 	const char *name;
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index d4d0efe..991ec74 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -93,9 +93,6 @@ extern void *of_get_flat_dt_prop(unsigned long node, const char *name,
 extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
 extern int of_flat_dt_match(unsigned long node, const char *const *matches);
 extern unsigned long of_get_flat_dt_root(void);
-extern int of_scan_flat_dt_by_path(const char *path,
-	int (*it)(unsigned long node, const char *name, int depth, void *data),
-	void *data);
 
 extern int early_init_dt_scan_chosen(unsigned long node, const char *uname,
 				     int depth, void *data);
-- 
1.9.1

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