1 files changed, 94 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.18/401-mtd-physmap-add-lock-unlock.patch b/target/linux/ar71xx/patches-3.18/401-mtd-physmap-add-lock-unlock.patch
new file mode 100644
index 0000000000..db7b3ca83d
--- /dev/null
+++ b/target/linux/ar71xx/patches-3.18/401-mtd-physmap-add-lock-unlock.patch
@@ -0,0 +1,94 @@
+--- a/drivers/mtd/maps/physmap.c
++++ b/drivers/mtd/maps/physmap.c
+@@ -31,6 +31,66 @@ struct physmap_flash_info {
+ 	int			vpp_refcnt;
+ };
+ 
++static struct platform_device *physmap_map2pdev(struct map_info *map)
++{
++	return (struct platform_device *) map->map_priv_1;
++}
++
++static void physmap_lock(struct map_info *map)
++{
++	struct platform_device *pdev;
++	struct physmap_flash_data *physmap_data;
++
++	pdev = physmap_map2pdev(map);
++	physmap_data = pdev->dev.platform_data;
++	physmap_data->lock(pdev);
++}
++
++static void physmap_unlock(struct map_info *map)
++{
++	struct platform_device *pdev;
++	struct physmap_flash_data *physmap_data;
++
++	pdev = physmap_map2pdev(map);
++	physmap_data = pdev->dev.platform_data;
++	physmap_data->unlock(pdev);
++}
++
++static map_word physmap_flash_read_lock(struct map_info *map, unsigned long ofs)
++{
++	map_word ret;
++
++	physmap_lock(map);
++	ret = inline_map_read(map, ofs);
++	physmap_unlock(map);
++
++	return ret;
++}
++
++static void physmap_flash_write_lock(struct map_info *map, map_word d,
++				     unsigned long ofs)
++{
++	physmap_lock(map);
++	inline_map_write(map, d, ofs);
++	physmap_unlock(map);
++}
++
++static void physmap_flash_copy_from_lock(struct map_info *map, void *to,
++					 unsigned long from, ssize_t len)
++{
++	physmap_lock(map);
++	inline_map_copy_from(map, to, from, len);
++	physmap_unlock(map);
++}
++
++static void physmap_flash_copy_to_lock(struct map_info *map, unsigned long to,
++				       const void *from, ssize_t len)
++{
++	physmap_lock(map);
++	inline_map_copy_to(map, to, from, len);
++	physmap_unlock(map);
++}
++
+ static int physmap_flash_remove(struct platform_device *dev)
+ {
+ 	struct physmap_flash_info *info;
+@@ -153,6 +213,13 @@ static int physmap_flash_probe(struct pl
+ 
+ 		simple_map_init(&info->map[i]);
+ 
++		if (physmap_data->lock && physmap_data->unlock) {
++			info->map[i].read = physmap_flash_read_lock;
++			info->map[i].write = physmap_flash_write_lock;
++			info->map[i].copy_from = physmap_flash_copy_from_lock;
++			info->map[i].copy_to = physmap_flash_copy_to_lock;
++		}
++
+ 		probe_type = rom_probe_types;
+ 		if (physmap_data->probe_type == NULL) {
+ 			for (; info->mtd[i] == NULL && *probe_type != NULL; probe_type++)
+--- a/include/linux/mtd/physmap.h
++++ b/include/linux/mtd/physmap.h
+@@ -25,6 +25,8 @@ struct physmap_flash_data {
+ 	unsigned int		width;
+ 	int			(*init)(struct platform_device *);
+ 	void			(*exit)(struct platform_device *);
++	void			(*lock)(struct platform_device *);
++	void			(*unlock)(struct platform_device *);
+ 	void			(*set_vpp)(struct platform_device *, int);
+ 	unsigned int		nr_parts;
+ 	unsigned int		pfow_base;