module: fix kdb's illicit use of struct module_use.

Linus changed the structure, and luckily this didn't compile any more.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Martin Hicks <mort@sgi.com>

include/linux/module.h

@@ -181,6 +181,13 @@ void *__symbol_get(const char *symbol);
 void *__symbol_get_gpl(const char *symbol);
 #define symbol_get(x) ((typeof(&x))(__symbol_get(MODULE_SYMBOL_PREFIX #x)))
 
+/* modules using other modules: kdb wants to see this. */
+struct module_use {
+	struct list_head source_list;
+	struct list_head target_list;
+	struct module *source, *target;
+};
+
 #ifndef __GENKSYMS__
 #ifdef CONFIG_MODVERSIONS
 /* Mark the CRC weak since genksyms apparently decides not to

kernel/debug/kdb/kdb_main.c

@@ -1857,12 +1857,6 @@ static int kdb_ef(int argc, const char **argv)
 }
 
 #if defined(CONFIG_MODULES)
-/* modules using other modules */
-struct module_use {
-	struct list_head list;
-	struct module *module_which_uses;
-};
-
 /*
  * kdb_lsmod - This function implements the 'lsmod' command.  Lists
  *	currently loaded kernel modules.
@@ -1894,9 +1888,9 @@ static int kdb_lsmod(int argc, const char **argv)
 		{
 			struct module_use *use;
 			kdb_printf(" [ ");
-			list_for_each_entry(use, &mod->modules_which_use_me,
-					    list)
-				kdb_printf("%s ", use->module_which_uses->name);
+			list_for_each_entry(use, &mod->source_list,
+					    source_list)
+				kdb_printf("%s ", use->target->name);
 			kdb_printf("]\n");
 		}
 #endif

kernel/module.c

@@ -536,14 +536,6 @@ static void module_unload_init(struct module *mod)
 	mod->waiter = current;
 }
 
-/* modules using other modules */
-struct module_use
-{
-	struct list_head source_list;
-	struct list_head target_list;
-	struct module *source, *target;
-};
-
 /* Does a already use b? */
 static int already_uses(struct module *a, struct module *b)
 {
@@ -589,8 +581,7 @@ static int add_module_usage(struct module *a, struct module *b)
 /* Module a uses b */
 int use_module(struct module *a, struct module *b)
 {
-	struct module_use *use;
-	int no_warn, err;
+	int err;
 
 	if (b == NULL || already_uses(a, b)) return 1;