Commit-ID: 81b40539e748b108d143a5e38526ab00a6a784b6
Gitweb: http://git.kernel.org/tip/81b40539e748b108d143a5e38526ab00a6a784b6
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Wed, 15 Feb 2012 12:17:09 +0100
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Wed, 15 Feb 2012 12:19:13 +0100
futex: Simplify return logic
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@xxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Darren Hart <dvhart@xxxxxxxxxxxxxxx>
---
kernel/futex.c | 38 +++++++++++++-------------------------
1 files changed, 13 insertions(+), 25 deletions(-)
diff --git a/kernel/futex.c b/kernel/futex.c
index 4b1c4b6..2364c99 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -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;
}
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