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futex: Simplify return logic

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No need to assign ret in each case and break. Simply return the result
of the handler function directly.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Darren Hart <dvhart@linux.intel.com>
This commit is contained in:
Thomas Gleixner 2012-02-15 12:17:09 +01:00
parent 59263b513c
commit 81b40539e7
1 changed files with 13 additions and 25 deletions
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38
kernel/futex.c
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@ -2616,7 +2616,7 @@ void exit_robust_list(struct task_struct *curr)
long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,
u32 __user *uaddr2, u32 val2, u32 val3)
{
int ret = -ENOSYS, cmd = op & FUTEX_CMD_MASK;
int cmd = op & FUTEX_CMD_MASK;
unsigned int flags = 0;
if (!(op & FUTEX_PRIVATE_FLAG))
@ -2642,43 +2642,31 @@ long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,
case FUTEX_WAIT:
val3 = FUTEX_BITSET_MATCH_ANY;
case FUTEX_WAIT_BITSET:
ret = futex_wait(uaddr, flags, val, timeout, val3);
break;
return futex_wait(uaddr, flags, val, timeout, val3);
case FUTEX_WAKE:
val3 = FUTEX_BITSET_MATCH_ANY;
case FUTEX_WAKE_BITSET:
ret = futex_wake(uaddr, flags, val, val3);
break;
return futex_wake(uaddr, flags, val, val3);
case FUTEX_REQUEUE:
ret = futex_requeue(uaddr, flags, uaddr2, val, val2, NULL, 0);
break;
return futex_requeue(uaddr, flags, uaddr2, val, val2, NULL, 0);
case FUTEX_CMP_REQUEUE:
ret = futex_requeue(uaddr, flags, uaddr2, val, val2, &val3, 0);
break;
return futex_requeue(uaddr, flags, uaddr2, val, val2, &val3, 0);
case FUTEX_WAKE_OP:
ret = futex_wake_op(uaddr, flags, uaddr2, val, val2, val3);
break;
return futex_wake_op(uaddr, flags, uaddr2, val, val2, val3);
case FUTEX_LOCK_PI:
ret = futex_lock_pi(uaddr, flags, val, timeout, 0);
break;
return futex_lock_pi(uaddr, flags, val, timeout, 0);
case FUTEX_UNLOCK_PI:
ret = futex_unlock_pi(uaddr, flags);
break;
return futex_unlock_pi(uaddr, flags);
case FUTEX_TRYLOCK_PI:
ret = futex_lock_pi(uaddr, flags, 0, timeout, 1);
break;
return futex_lock_pi(uaddr, flags, 0, timeout, 1);
case FUTEX_WAIT_REQUEUE_PI:
val3 = FUTEX_BITSET_MATCH_ANY;
ret = futex_wait_requeue_pi(uaddr, flags, val, timeout, val3,
uaddr2);
break;
return futex_wait_requeue_pi(uaddr, flags, val, timeout, val3,
uaddr2);
case FUTEX_CMP_REQUEUE_PI:
ret = futex_requeue(uaddr, flags, uaddr2, val, val2, &val3, 1);
break;
default:
ret = -ENOSYS;
return futex_requeue(uaddr, flags, uaddr2, val, val2, &val3, 1);
}
return ret;
return -ENOSYS;
}