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Diffstat (limited to 'arch/hexagon/include/asm/uaccess.h')
-rw-r--r--arch/hexagon/include/asm/uaccess.h57
1 files changed, 0 insertions, 57 deletions
diff --git a/arch/hexagon/include/asm/uaccess.h b/arch/hexagon/include/asm/uaccess.h
index 00cb38faad0c..bff77efc0d9a 100644
--- a/arch/hexagon/include/asm/uaccess.h
+++ b/arch/hexagon/include/asm/uaccess.h
@@ -10,35 +10,9 @@
/*
* User space memory access functions
*/
-#include <linux/mm.h>
#include <asm/sections.h>
/*
- * access_ok: - Checks if a user space pointer is valid
- * @addr: User space pointer to start of block to check
- * @size: Size of block to check
- *
- * Context: User context only. This function may sleep if pagefaults are
- * enabled.
- *
- * Checks if a pointer to a block of memory in user space is valid.
- *
- * Returns true (nonzero) if the memory block *may* be valid, false (zero)
- * if it is definitely invalid.
- *
- * User address space in Hexagon, like x86, goes to 0xbfffffff, so the
- * simple MSB-based tests used by MIPS won't work. Some further
- * optimization is probably possible here, but for now, keep it
- * reasonably simple and not *too* slow. After all, we've got the
- * MMU for backup.
- */
-
-#define __access_ok(addr, size) \
- ((get_fs().seg == KERNEL_DS.seg) || \
- (((unsigned long)addr < get_fs().seg) && \
- (unsigned long)size < (get_fs().seg - (unsigned long)addr)))
-
-/*
* When a kernel-mode page fault is taken, the faulting instruction
* address is checked against a table of exception_table_entries.
* Each entry is a tuple of the address of an instruction that may
@@ -58,38 +32,7 @@ unsigned long raw_copy_to_user(void __user *to, const void *from,
__kernel_size_t __clear_user_hexagon(void __user *dest, unsigned long count);
#define __clear_user(a, s) __clear_user_hexagon((a), (s))
-#define __strncpy_from_user(dst, src, n) hexagon_strncpy_from_user(dst, src, n)
-
-/* get around the ifndef in asm-generic/uaccess.h */
-#define __strnlen_user __strnlen_user
-
-extern long __strnlen_user(const char __user *src, long n);
-
-static inline long hexagon_strncpy_from_user(char *dst, const char __user *src,
- long n);
-
#include <asm-generic/uaccess.h>
-/* Todo: an actual accelerated version of this. */
-static inline long hexagon_strncpy_from_user(char *dst, const char __user *src,
- long n)
-{
- long res = __strnlen_user(src, n);
-
- if (unlikely(!res))
- return -EFAULT;
-
- if (res > n) {
- long left = raw_copy_from_user(dst, src, n);
- if (unlikely(left))
- memset(dst + (n - left), 0, left);
- return n;
- } else {
- long left = raw_copy_from_user(dst, src, res);
- if (unlikely(left))
- memset(dst + (res - left), 0, left);
- return res-1;
- }
-}
#endif