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authorAl Viro <viro@zeniv.linux.org.uk>2017-03-22 20:13:15 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2017-03-29 01:23:52 +0300
commitab89866be3a02008880719f8928ff4fd960f99b6 (patch)
treee13825613985e4be0f964adb4baf4485fcfa114d /arch/openrisc
parent6c36a4eb9aea4081a4286afaf23cf8cce30f3e6f (diff)
downloadlinux-ab89866be3a02008880719f8928ff4fd960f99b6.tar.xz
openrisc: switch to RAW_COPY_USER
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/openrisc')
-rw-r--r--arch/openrisc/Kconfig1
-rw-r--r--arch/openrisc/include/asm/uaccess.h28
2 files changed, 7 insertions, 22 deletions
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index 1e95920b0737..38954181fa96 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -28,6 +28,7 @@ config OPENRISC
select OR1K_PIC
select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1
select NO_BOOTMEM
+ select ARCH_HAS_RAW_COPY_USER
config MMU
def_bool y
diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h
index 92236c9e7c7d..96fc425271c2 100644
--- a/arch/openrisc/include/asm/uaccess.h
+++ b/arch/openrisc/include/asm/uaccess.h
@@ -236,34 +236,18 @@ do { \
extern unsigned long __must_check
__copy_tofrom_user(void *to, const void *from, unsigned long size);
-
-#define __copy_from_user(to, from, size) \
- __copy_tofrom_user(to, from, size)
-#define __copy_to_user(to, from, size) \
- __copy_tofrom_user(to, from, size)
-
-#define __copy_to_user_inatomic __copy_to_user
-#define __copy_from_user_inatomic __copy_from_user
-
static inline unsigned long
-copy_from_user(void *to, const void *from, unsigned long n)
+raw_copy_from_user(void *to, const void __user *from, unsigned long size)
{
- unsigned long res = n;
-
- if (likely(access_ok(VERIFY_READ, from, n)))
- res = __copy_tofrom_user(to, from, n);
- if (unlikely(res))
- memset(to + (n - res), 0, res);
- return res;
+ return __copy_tofrom_user(to, (__force const void *)from, size);
}
-
static inline unsigned long
-copy_to_user(void *to, const void *from, unsigned long n)
+raw_copy_to_user(void *to, const void __user *from, unsigned long size)
{
- if (likely(access_ok(VERIFY_WRITE, to, n)))
- n = __copy_tofrom_user(to, from, n);
- return n;
+ return __copy_tofrom_user((__force void *)to, from, size);
}
+#define INLINE_COPY_FROM_USER
+#define INLINE_COPY_TO_USER
extern unsigned long __clear_user(void *addr, unsigned long size);