From 10ebd8556b7990499c896a550e3d416b444211e6 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 02:23:07 +0000
Subject: [PATCH] add led
---
kernel/arch/hexagon/include/asm/futex.h | 11 +++++------
1 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/kernel/arch/hexagon/include/asm/futex.h b/kernel/arch/hexagon/include/asm/futex.h
index e8e5e47..9fb00a0 100644
--- a/kernel/arch/hexagon/include/asm/futex.h
+++ b/kernel/arch/hexagon/include/asm/futex.h
@@ -21,7 +21,7 @@
"3:\n" \
".section .fixup,\"ax\"\n" \
"4: %1 = #%5;\n" \
- " jump 3b\n" \
+ " jump ##3b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
".long 1b,4b,2b,4b\n" \
@@ -36,7 +36,8 @@
{
int oldval = 0, ret;
- pagefault_disable();
+ if (!access_ok(uaddr, sizeof(u32)))
+ return -EFAULT;
switch (op) {
case FUTEX_OP_SET:
@@ -62,8 +63,6 @@
ret = -ENOSYS;
}
- pagefault_enable();
-
if (!ret)
*oval = oldval;
@@ -77,7 +76,7 @@
int prev;
int ret;
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
+ if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
__asm__ __volatile__ (
@@ -91,7 +90,7 @@
"3:\n"
".section .fixup,\"ax\"\n"
"4: %0 = #%6\n"
- " jump 3b\n"
+ " jump ##3b\n"
".previous\n"
".section __ex_table,\"a\"\n"
".long 1b,4b,2b,4b\n"
--
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