futex: uninitialized warning corrections

The variables here are really not used uninitialized.

kernel/futex.c: In function 'fixup_pi_state_owner.clone.17':
kernel/futex.c:1582:6: warning: 'curval' may be used uninitialized in this function
kernel/futex.c: In function 'handle_futex_death':
kernel/futex.c:2486:6: warning: 'nval' may be used uninitialized in this function
kernel/futex.c: In function 'do_futex':
kernel/futex.c:863:11: warning: 'curval' may be used uninitialized in this function
kernel/futex.c:828:6: note: 'curval' was declared here
kernel/futex.c:898:5: warning: 'oldval' may be used uninitialized in this function
kernel/futex.c:890:6: note: 'oldval' was declared here

Signed-off-by: Vitaliy Ivanov <vitalivanov@gmail.com>
Acked-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/kernel/futex.c b/kernel/futex.c
index 0a30897..f4e811c 100644 (file)
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -825,7 +825,7 @@ static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this)
 {
        struct task_struct *new_owner;
        struct futex_pi_state *pi_state = this->pi_state;
-       u32 curval, newval;
+       u32 uninitialized_var(curval), newval;
 
        if (!pi_state)
                return -EINVAL;
@@ -887,7 +887,7 @@ static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this)
 
 static int unlock_futex_pi(u32 __user *uaddr, u32 uval)
 {
-       u32 oldval;
+       u32 uninitialized_var(oldval);
 
        /*
         * There is no waiter, so we unlock the futex. The owner died
@@ -1546,7 +1546,7 @@ static int fixup_pi_state_owner(u32 __user *uaddr, struct futex_q *q,
        u32 newtid = task_pid_vnr(newowner) | FUTEX_WAITERS;
        struct futex_pi_state *pi_state = q->pi_state;
        struct task_struct *oldowner = pi_state->owner;
-       u32 uval, curval, newval;
+       u32 uval, uninitialized_var(curval), newval;
        int ret;
 
        /* Owner died? */
@@ -2451,7 +2451,7 @@ err_unlock:
  */
 int handle_futex_death(u32 __user *uaddr, struct task_struct *curr, int pi)
 {
-       u32 uval, nval, mval;
+       u32 uval, uninitialized_var(nval), mval;
 
 retry:
        if (get_user(uval, uaddr))