summaryrefslogtreecommitdiff
path: root/arch/xtensa/include/asm/futex.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/xtensa/include/asm/futex.h')
-rw-r--r--arch/xtensa/include/asm/futex.h27
1 files changed, 5 insertions, 22 deletions
diff --git a/arch/xtensa/include/asm/futex.h b/arch/xtensa/include/asm/futex.h
index b39531babec0..eaaf1ebcc7a4 100644
--- a/arch/xtensa/include/asm/futex.h
+++ b/arch/xtensa/include/asm/futex.h
@@ -44,18 +44,10 @@
: "r" (uaddr), "I" (-EFAULT), "r" (oparg) \
: "memory")
-static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
+static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
+ u32 __user *uaddr)
{
- int op = (encoded_op >> 28) & 7;
- int cmp = (encoded_op >> 24) & 15;
- int oparg = (encoded_op << 8) >> 20;
- int cmparg = (encoded_op << 20) >> 20;
int oldval = 0, ret;
- if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
- oparg = 1 << oparg;
-
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
- return -EFAULT;
#if !XCHAL_HAVE_S32C1I
return -ENOSYS;
@@ -89,19 +81,10 @@ static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
pagefault_enable();
- if (ret)
- return ret;
+ if (!ret)
+ *oval = oldval;
- switch (cmp) {
- case FUTEX_OP_CMP_EQ: return (oldval == cmparg);
- case FUTEX_OP_CMP_NE: return (oldval != cmparg);
- case FUTEX_OP_CMP_LT: return (oldval < cmparg);
- case FUTEX_OP_CMP_GE: return (oldval >= cmparg);
- case FUTEX_OP_CMP_LE: return (oldval <= cmparg);
- case FUTEX_OP_CMP_GT: return (oldval > cmparg);
- }
-
- return -ENOSYS;
+ return ret;
}
static inline int