36 static int ram_erase(struct mtd_info *mtd, struct erase_info *instr)  in ram_erase()  argument
38 	if (instr->addr + instr->len > mtd->size)  in ram_erase()
41 	memset((char *)mtd->priv + instr->addr, 0xff, instr->len);  in ram_erase()
49 static int ram_point(struct mtd_info *mtd, loff_t from, size_t len,  in ram_point()  argument
52 	if (from + len > mtd->size)  in ram_point()
59 	*virt = mtd->priv + from;  in ram_point()
64 static void ram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)  in ram_unpoint()  argument
68 static int ram_read(struct mtd_info *mtd, loff_t from, size_t len,  in ram_read()  argument
71 	if (from + len > mtd->size)  in ram_read()
74 	memcpy(buf, mtd->priv + from, len);  in ram_read()
80 static int ram_write(struct mtd_info *mtd, loff_t to, size_t len,  in ram_write()  argument
83 	if (to + len > mtd->size)  in ram_write()
86 	memcpy((char *)mtd->priv + to, buf, len);  in ram_write()
101 int mtdram_init_device(struct mtd_info *mtd, void *mapped_address,  in mtdram_init_device()  argument
104 	memset(mtd, 0, sizeof(*mtd));  in mtdram_init_device()
107 	mtd->name = name;  in mtdram_init_device()
108 	mtd->type = MTD_RAM;  in mtdram_init_device()
109 	mtd->flags = MTD_CAP_RAM;  in mtdram_init_device()
110 	mtd->size = size;  in mtdram_init_device()
111 	mtd->writesize = 1;  in mtdram_init_device()
112 	mtd->erasesize = MTDRAM_ERASE_SIZE;  in mtdram_init_device()
113 	mtd->priv = mapped_address;  in mtdram_init_device()
115 	mtd->owner = THIS_MODULE;  in mtdram_init_device()
116 	mtd->erase = ram_erase;  in mtdram_init_device()
117 	mtd->point = ram_point;  in mtdram_init_device()
118 	mtd->unpoint = ram_unpoint;  in mtdram_init_device()
119 	mtd->read = ram_read;  in mtdram_init_device()
120 	mtd->write = ram_write;  in mtdram_init_device()
122 	if (add_mtd_device(mtd)) {  in mtdram_init_device()