From 9999e48639b3cecb08ffb37358bcba3b48161b29 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:17 +0000
Subject: [PATCH] add ax88772_rst
---
kernel/arch/mips/include/asm/uaccess.h | 15 +++++----------
1 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/kernel/arch/mips/include/asm/uaccess.h b/kernel/arch/mips/include/asm/uaccess.h
index 0662901..61fc01f 100644
--- a/kernel/arch/mips/include/asm/uaccess.h
+++ b/kernel/arch/mips/include/asm/uaccess.h
@@ -69,11 +69,10 @@
#define USER_DS ((mm_segment_t) { __UA_LIMIT })
#endif
-#define get_ds() (KERNEL_DS)
#define get_fs() (current_thread_info()->addr_limit)
#define set_fs(x) (current_thread_info()->addr_limit = (x))
-#define segment_eq(a, b) ((a).seg == (b).seg)
+#define uaccess_kernel() (get_fs().seg == KERNEL_DS.seg)
/*
* eva_kernel_access() - determine whether kernel memory access on an EVA system
@@ -109,9 +108,6 @@
/*
* access_ok: - Checks if a user space pointer is valid
- * @type: Type of access: %VERIFY_READ or %VERIFY_WRITE. Note that
- * %VERIFY_WRITE is a superset of %VERIFY_READ - if it is safe
- * to write to a block, it is always safe to read from it.
* @addr: User space pointer to start of block to check
* @size: Size of block to check
*
@@ -134,7 +130,7 @@
return (get_fs().seg & (addr | (addr + size) | __ua_size(size))) == 0;
}
-#define access_ok(type, addr, size) \
+#define access_ok(addr, size) \
likely(__access_ok((addr), (size)))
/*
@@ -304,7 +300,7 @@
const __typeof__(*(ptr)) __user * __gu_ptr = (ptr); \
\
might_fault(); \
- if (likely(access_ok(VERIFY_READ, __gu_ptr, size))) { \
+ if (likely(access_ok( __gu_ptr, size))) { \
if (eva_kernel_access()) \
__get_kernel_common((x), size, __gu_ptr); \
else \
@@ -446,7 +442,7 @@
int __pu_err = -EFAULT; \
\
might_fault(); \
- if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) { \
+ if (likely(access_ok( __pu_addr, size))) { \
if (eva_kernel_access()) \
__put_kernel_common(__pu_addr, size); \
else \
@@ -691,8 +687,7 @@
({ \
void __user * __cl_addr = (addr); \
unsigned long __cl_size = (n); \
- if (__cl_size && access_ok(VERIFY_WRITE, \
- __cl_addr, __cl_size)) \
+ if (__cl_size && access_ok(__cl_addr, __cl_size)) \
__cl_size = __clear_user(__cl_addr, __cl_size); \
__cl_size; \
})
--
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