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authorArnd Bergmann <arnd@arndb.de>2020-10-28 17:14:04 +0300
committerTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2020-10-28 17:21:43 +0300
commitd9594e0409651a237903a13c9718df889f43d43b (patch)
tree740a7c0485d5023b5604b4b913e4cd1b81b27e0a /security/tomoyo/securityfs_if.c
parentd4fe911741e58e62db1758aa4cd7b09c1064cce1 (diff)
downloadlinux-d9594e0409651a237903a13c9718df889f43d43b.tar.xz
tomoyo: fix clang pointer arithmetic warning
clang warns about additions on NULL pointers being undefined in C: security/tomoyo/securityfs_if.c:226:59: warning: arithmetic on a null pointer treated as a cast from integer to pointer is a GNU extension [-Wnull-pointer-arithmetic] securityfs_create_file(name, mode, parent, ((u8 *) NULL) + key, Change the code to instead use a cast through uintptr_t to avoid the warning. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Diffstat (limited to 'security/tomoyo/securityfs_if.c')
-rw-r--r--security/tomoyo/securityfs_if.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/security/tomoyo/securityfs_if.c b/security/tomoyo/securityfs_if.c
index 546281c5b233..065f4941c4d8 100644
--- a/security/tomoyo/securityfs_if.c
+++ b/security/tomoyo/securityfs_if.c
@@ -131,8 +131,8 @@ static const struct file_operations tomoyo_self_operations = {
*/
static int tomoyo_open(struct inode *inode, struct file *file)
{
- const int key = ((u8 *) file_inode(file)->i_private)
- - ((u8 *) NULL);
+ const u8 key = (uintptr_t) file_inode(file)->i_private;
+
return tomoyo_open_control(key, file);
}
@@ -223,7 +223,7 @@ static const struct file_operations tomoyo_operations = {
static void __init tomoyo_create_entry(const char *name, const umode_t mode,
struct dentry *parent, const u8 key)
{
- securityfs_create_file(name, mode, parent, ((u8 *) NULL) + key,
+ securityfs_create_file(name, mode, parent, (void *) (uintptr_t) key,
&tomoyo_operations);
}