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futex: Cleanup generic SMP variant of arch_futex_atomic_op_inuser()

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The generic SMP variant of arch_futex_atomic_op_inuser() returns always
-ENOSYS so the switch case and surrounding code are pointless. Remove it
and just return -ENOSYS.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lkml.kernel.org/r/12bdaca8-99eb-e576-f842-5970ab1d6a92@virtuozzo.com
This commit is contained in:
Vasily Averin 2019-07-16 09:22:03 +03:00 committed by Thomas Gleixner
parent 5f9e832c13
commit f9adc23ee9
1 changed files with 1 additions and 20 deletions
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21
include/asm-generic/futex.h
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@ -118,26 +118,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
static inline int static inline int
arch_futex_atomic_op_inuser(int op, u32 oparg, int *oval, u32 __user *uaddr) arch_futex_atomic_op_inuser(int op, u32 oparg, int *oval, u32 __user *uaddr)
{ {
int oldval = 0, ret; return -ENOSYS;
pagefault_disable();
switch (op) {
case FUTEX_OP_SET:
case FUTEX_OP_ADD:
case FUTEX_OP_OR:
case FUTEX_OP_ANDN:
case FUTEX_OP_XOR:
default:
ret = -ENOSYS;
}
pagefault_enable();
if (!ret)
*oval = oldval;
return ret;
} }
static inline int static inline int