[PATCH] Keys: Get rid of warning in kmod.c if keys disabled
The attached patch gets rid of a "statement without effect" warning when
CONFIG_KEYS is disabled by making use of the return value of key_get().
The compiler will optimise all of this away when keys are disabled.
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/kernel/kmod.c b/kernel/kmod.c
index 44166e3..51a8920 100644
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -131,14 +131,14 @@
static int ____call_usermodehelper(void *data)
{
struct subprocess_info *sub_info = data;
- struct key *old_session;
+ struct key *new_session, *old_session;
int retval;
/* Unblock all signals and set the session keyring. */
- key_get(sub_info->ring);
+ new_session = key_get(sub_info->ring);
flush_signals(current);
spin_lock_irq(¤t->sighand->siglock);
- old_session = __install_session_keyring(current, sub_info->ring);
+ old_session = __install_session_keyring(current, new_session);
flush_signal_handlers(current, 1);
sigemptyset(¤t->blocked);
recalc_sigpending();