3  * Virtual concat MTD device driver
10 #include <linux/mtd/mtd.h>
12 #include <linux/mtd/partitions.h>
16 #include <linux/mtd/concat.h>
71 	struct mtd_info *mtd;  in mtd_virt_concat_destroy_joins()  local
74 		mtd = &item->concat->mtd;  in mtd_virt_concat_destroy_joins()
76 			mtd_device_unregister(mtd);  in mtd_virt_concat_destroy_joins()
77 			kfree(mtd->name);  in mtd_virt_concat_destroy_joins()
79 			mtd_concat_destroy(mtd);  in mtd_virt_concat_destroy_joins()
85  * mtd_virt_concat_destroy - Destroy the concat that includes the mtd object
86  * @mtd:        pointer to 'mtd_info'
90 int mtd_virt_concat_destroy(struct mtd_info *mtd)  in mtd_virt_concat_destroy()  argument
92 	struct mtd_info *child, *master = mtd_get_master(mtd);  in mtd_virt_concat_destroy()
101 		/* Find the concat item that hold the mtd device */  in mtd_virt_concat_destroy()
103 			if (item->nodes[idx] == mtd->dev.of_node) {  in mtd_virt_concat_destroy()
114 		 * all MTD devices that are part of it and register them  in mtd_virt_concat_destroy()
119 			if (child->dev.of_node != mtd->dev.of_node) {  in mtd_virt_concat_destroy()
126 		if (concat->mtd.name) {  in mtd_virt_concat_destroy()
127 			del_mtd_device(&concat->mtd);  in mtd_virt_concat_destroy()
128 			kfree(concat->mtd.name);  in mtd_virt_concat_destroy()
130 			mtd_concat_destroy(&concat->mtd);  in mtd_virt_concat_destroy()
143 	kfree(mtd->name);  in mtd_virt_concat_destroy()
144 	kfree(mtd);  in mtd_virt_concat_destroy()
152  * @count:        number of mtd devices that make up
212  * mtd_virt_concat_add - Add a mtd device to the concat list
213  * @mtd:        pointer to 'mtd_info'
217 bool mtd_virt_concat_add(struct mtd_info *mtd)  in mtd_virt_concat_add()  argument
226 			if (item->nodes[idx] == mtd->dev.of_node) {  in mtd_virt_concat_add()
227 				concat->subdev[concat->num_subdev++] = mtd;  in mtd_virt_concat_add()
281  *                                 MTD device.
289 	struct mtd_info *mtd;  in mtd_virt_concat_create_join()  local
298 		 * that the MTD information for all devices included in the  in mtd_virt_concat_create_join()
299 		 * concatenation are not handy, concat MTD device can't be  in mtd_virt_concat_create_join()
322 			if (concat->mtd.name) {  in mtd_virt_concat_create_join()
323 				ret = memcmp(concat->mtd.name, name, name_sz);  in mtd_virt_concat_create_join()
329 			mtd = mtd_concat_create(concat->subdev, concat->num_subdev, name);  in mtd_virt_concat_create_join()
330 			if (!mtd) {  in mtd_virt_concat_create_join()
334 			concat->mtd = *mtd;  in mtd_virt_concat_create_join()
336 			concat->mtd.dev.parent = concat->subdev[0]->dev.parent;  in mtd_virt_concat_create_join()
337 			concat->mtd.dev = concat->subdev[0]->dev;  in mtd_virt_concat_create_join()
339 			/* Add the mtd device */  in mtd_virt_concat_create_join()
340 			ret = add_mtd_device(&concat->mtd);  in mtd_virt_concat_create_join()
349 	mtd_concat_destroy(mtd);  in mtd_virt_concat_create_join()