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-rw-r--r--arch/blackfin/include/asm/Kbuild1
-rw-r--r--arch/blackfin/include/asm/uaccess.h47
-rw-r--r--arch/blackfin/kernel/process.c2
3 files changed, 7 insertions, 43 deletions
diff --git a/arch/blackfin/include/asm/Kbuild b/arch/blackfin/include/asm/Kbuild
index 625db8ac815e..dc4ef9ac1e83 100644
--- a/arch/blackfin/include/asm/Kbuild
+++ b/arch/blackfin/include/asm/Kbuild
@@ -7,6 +7,7 @@ generic-y += device.h
generic-y += div64.h
generic-y += emergency-restart.h
generic-y += errno.h
+generic-y += extable.h
generic-y += fb.h
generic-y += futex.h
generic-y += hw_irq.h
diff --git a/arch/blackfin/include/asm/uaccess.h b/arch/blackfin/include/asm/uaccess.h
index 0eff88aa6d6a..f54a34f31cea 100644
--- a/arch/blackfin/include/asm/uaccess.h
+++ b/arch/blackfin/include/asm/uaccess.h
@@ -12,7 +12,6 @@
/*
* User space memory access functions
*/
-#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/string.h>
@@ -29,9 +28,6 @@ static inline void set_fs(mm_segment_t fs)
#define segment_eq(a, b) ((a) == (b))
-#define VERIFY_READ 0
-#define VERIFY_WRITE 1
-
#define access_ok(type, addr, size) _access_ok((unsigned long)(addr), (size))
/*
@@ -46,22 +42,7 @@ static inline int _access_ok(unsigned long addr, unsigned long size) { return 1;
extern int _access_ok(unsigned long addr, unsigned long size);
#endif
-/*
- * The exception table consists of pairs of addresses: the first is the
- * address of an instruction that is allowed to fault, and the second is
- * the address at which the program should continue. No registers are
- * modified, so it is entirely up to the continuation code to figure out
- * what to do.
- *
- * All the routines below use bits of fixup code that are out of line
- * with the main instruction path. This means when everything is well,
- * we don't even have to jump over them. Further, they do not intrude
- * on our cache or tlb entries.
- */
-
-struct exception_table_entry {
- unsigned long insn, fixup;
-};
+#include <asm/extable.h>
/*
* These are the main single-value transfer routines. They automatically
@@ -163,41 +144,23 @@ static inline int bad_user_access_length(void)
: "a" (__ptr(ptr))); \
})
-#define __copy_to_user_inatomic __copy_to_user
-#define __copy_from_user_inatomic __copy_from_user
-
static inline unsigned long __must_check
-__copy_from_user(void *to, const void __user *from, unsigned long n)
+raw_copy_from_user(void *to, const void __user *from, unsigned long n)
{
memcpy(to, (const void __force *)from, n);
return 0;
}
static inline unsigned long __must_check
-__copy_to_user(void __user *to, const void *from, unsigned long n)
+raw_copy_to_user(void __user *to, const void *from, unsigned long n)
{
memcpy((void __force *)to, from, n);
SSYNC();
return 0;
}
-static inline unsigned long __must_check
-copy_from_user(void *to, const void __user *from, unsigned long n)
-{
- if (likely(access_ok(VERIFY_READ, from, n)))
- return __copy_from_user(to, from, n);
- memset(to, 0, n);
- return n;
-}
-
-static inline unsigned long __must_check
-copy_to_user(void __user *to, const void *from, unsigned long n)
-{
- if (likely(access_ok(VERIFY_WRITE, to, n)))
- return __copy_to_user(to, from, n);
- return n;
-}
-
+#define INLINE_COPY_FROM_USER
+#define INLINE_COPY_TO_USER
/*
* Copy a null terminated string from userspace.
*/
diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c
index 89d5162d4ca6..89814850b08b 100644
--- a/arch/blackfin/kernel/process.c
+++ b/arch/blackfin/kernel/process.c
@@ -370,7 +370,7 @@ int _access_ok(unsigned long addr, unsigned long size)
/* Check that things do not wrap around */
if (addr > ULONG_MAX - size)
return 0;
- if (segment_eq(get_fs(), KERNEL_DS))
+ if (uaccess_kernel())
return 1;
#ifdef CONFIG_MTD_UCLINUX
if (1)