linux-kernel - [PATCH 1/3] module: Prepare to convert all module_param

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Date:   Tue, 17 Oct 2017 19:01:09 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Jessica Yu <jeyu@...hat.com>
Cc:     Kees Cook <keescook@...omium.org>, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] module: Prepare to convert all module_param_call() prototypes

After actually converting all module_param_call() function prototypes, we
no longer need to do a tricky sizeof(func(thing)) type-check. Remove it.

Signed-off-by: Kees Cook <keescook@...omium.org>
---
 include/linux/moduleparam.h | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
index 1ee7b30dafec..037a90a522a5 100644
--- a/include/linux/moduleparam.h
+++ b/include/linux/moduleparam.h
@@ -228,18 +228,10 @@ struct kparam_array
 
 /* Obsolete - use module_param_cb() */
 #define module_param_call(name, set, get, arg, perm)			\
-	static const struct kernel_param_ops __param_ops_##name =		\
+	static const struct kernel_param_ops __param_ops_##name =	\
 		{ .flags = 0, (void *)set, (void *)get };		\
 	__module_param_call(MODULE_PARAM_PREFIX,			\
-			    name, &__param_ops_##name, arg,		\
-			    (perm) + sizeof(__check_old_set_param(set))*0, -1, 0)
-
-/* We don't get oldget: it's often a new-style param_get_uint, etc. */
-static inline int
-__check_old_set_param(int (*oldset)(const char *, struct kernel_param *))
-{
-	return 0;
-}
+			    name, &__param_ops_##name, arg, perm, -1, 0)
 
 #ifdef CONFIG_SYSFS
 extern void kernel_param_lock(struct module *mod);
-- 
2.7.4