patch-2.4.0-test12 linux/drivers/mtd/map_rom.c

• Lines: 82
• Date: Mon Dec 11 14:57:58 2000
• Orig file: v2.4.0-test11/linux/drivers/mtd/map_rom.c
• Orig date: Tue Jul 4 10:10:05 2000

diff -u --recursive --new-file v2.4.0-test11/linux/drivers/mtd/map_rom.c linux/drivers/mtd/map_rom.c
@@ -1,7 +1,7 @@
 /*
  * Common code to handle map devices which are simple ROM
  * (C) 2000 Red Hat. GPL'd.
- * $Id: map_rom.c,v 1.2 2000/07/03 10:01:38 dwmw2 Exp $
+ * $Id: map_rom.c,v 1.10 2000/12/10 01:39:13 dwmw2 Exp $
  */
 
 #include <linux/module.h>
@@ -14,12 +14,19 @@
 
 #include <linux/mtd/map.h>
 
-
 static int maprom_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
+static int maprom_write (struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
 static void maprom_nop (struct mtd_info *);
 
-struct mtd_info *map_rom_probe(struct map_info *);
-EXPORT_SYMBOL(map_rom_probe);
+static const char im_name[] = "map_rom_probe";
+
+/* This routine is made available to other mtd code via
+ * inter_module_register.  It must only be accessed through
+ * inter_module_get which will bump the use count of this module.  The
+ * addresses passed back in mtd are valid as long as the use count of
+ * this module is non-zero, i.e. between inter_module_get and
+ * inter_module_put.  Keith Owens <kaos@ocs.com.au> 29 Oct 2000.
+ */
 
 struct mtd_info *map_rom_probe(struct map_info *map)
 {
@@ -31,16 +38,18 @@
 
 	memset(mtd, 0, sizeof(*mtd));
 
+	map->im_name = im_name;
 	map->fldrv_destroy = maprom_nop;
 	mtd->priv = map;
 	mtd->name = map->name;
 	mtd->type = MTD_ROM;
 	mtd->size = map->size;
 	mtd->read = maprom_read;
+	mtd->write = maprom_write;
 	mtd->sync = maprom_nop;
 	mtd->flags = MTD_CAP_ROM;
-	
-	MOD_INC_USE_COUNT;
+	mtd->erasesize = 131072;
+
 	return mtd;
 }
 
@@ -58,3 +67,28 @@
 {
 	/* Nothing to see here */
 }
+
+static int maprom_write (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf)
+{
+	printk(KERN_NOTICE "maprom_write called\n");
+	return -EIO;
+}
+
+#if LINUX_VERSION_CODE < 0x20212 && defined(MODULE)
+#define map_rom_init init_module
+#define map_rom_exit cleanup_module
+#endif
+
+static int __init map_rom_init(void)
+{
+	inter_module_register(im_name, THIS_MODULE, &map_rom_probe);
+	return 0;
+}
+
+static void __exit map_rom_exit(void)
+{
+	inter_module_unregister(im_name);
+}
+
+module_init(map_rom_init);
+module_exit(map_rom_exit);