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authorAl Viro <viro@zeniv.linux.org.uk>2017-03-28 00:51:43 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2017-03-28 16:43:44 -0400
commit3fb50075284433093eba7c43e75b16eaa36eeabd (patch)
treeecb3e9670cbf3dec94b48ba1f8f604df774c9af1 /arch
parentdb68ce10c4f0a27c1ff9fa0e789e5c41f8c4ea63 (diff)
asm-generic/uaccess.h: don't mess with __copy_{to,from}_user
only h8300 actually used those; might as well define them there. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/c6x/include/asm/uaccess.h3
-rw-r--r--arch/h8300/include/asm/Kbuild1
-rw-r--r--arch/h8300/include/asm/uaccess.h52
-rw-r--r--arch/um/include/asm/uaccess.h2
-rw-r--r--arch/unicore32/include/asm/uaccess.h2
5 files changed, 52 insertions, 8 deletions
diff --git a/arch/c6x/include/asm/uaccess.h b/arch/c6x/include/asm/uaccess.h
index 453dd263bee3..79fb6f439c5c 100644
--- a/arch/c6x/include/asm/uaccess.h
+++ b/arch/c6x/include/asm/uaccess.h
@@ -94,9 +94,6 @@ static inline __must_check long __copy_to_user(void __user *to,
return 0;
}
-#define __copy_to_user __copy_to_user
-#define __copy_from_user __copy_from_user
-
extern int _access_ok(unsigned long addr, unsigned long size);
#ifdef CONFIG_ACCESS_CHECK
#define __access_ok _access_ok
diff --git a/arch/h8300/include/asm/Kbuild b/arch/h8300/include/asm/Kbuild
index f14e4e6ccbde..757cdeb24e6e 100644
--- a/arch/h8300/include/asm/Kbuild
+++ b/arch/h8300/include/asm/Kbuild
@@ -69,7 +69,6 @@ generic-y += tlbflush.h
generic-y += trace_clock.h
generic-y += topology.h
generic-y += types.h
-generic-y += uaccess.h
generic-y += ucontext.h
generic-y += unaligned.h
generic-y += vga.h
diff --git a/arch/h8300/include/asm/uaccess.h b/arch/h8300/include/asm/uaccess.h
new file mode 100644
index 000000000000..c156a416a279
--- /dev/null
+++ b/arch/h8300/include/asm/uaccess.h
@@ -0,0 +1,52 @@
+#ifndef _ASM_UACCESS_H
+#define _ASM_UACCESS_H
+
+#include <linux/string.h>
+
+static inline __must_check long __copy_from_user(void *to,
+ const void __user * from, unsigned long n)
+{
+ if (__builtin_constant_p(n)) {
+ switch(n) {
+ case 1:
+ *(u8 *)to = *(u8 __force *)from;
+ return 0;
+ case 2:
+ *(u16 *)to = *(u16 __force *)from;
+ return 0;
+ case 4:
+ *(u32 *)to = *(u32 __force *)from;
+ return 0;
+ }
+ }
+
+ memcpy(to, (const void __force *)from, n);
+ return 0;
+}
+
+static inline __must_check long __copy_to_user(void __user *to,
+ const void *from, unsigned long n)
+{
+ if (__builtin_constant_p(n)) {
+ switch(n) {
+ case 1:
+ *(u8 __force *)to = *(u8 *)from;
+ return 0;
+ case 2:
+ *(u16 __force *)to = *(u16 *)from;
+ return 0;
+ case 4:
+ *(u32 __force *)to = *(u32 *)from;
+ return 0;
+ default:
+ break;
+ }
+ }
+
+ memcpy((void __force *)to, from, n);
+ return 0;
+}
+
+#include <asm-generic/uaccess.h>
+
+#endif
diff --git a/arch/um/include/asm/uaccess.h b/arch/um/include/asm/uaccess.h
index e992bb57da5a..9396c8a4e920 100644
--- a/arch/um/include/asm/uaccess.h
+++ b/arch/um/include/asm/uaccess.h
@@ -31,8 +31,6 @@ static inline int __access_ok(unsigned long addr, unsigned long size);
/* Teach asm-generic/uaccess.h that we have C functions for these. */
#define __access_ok __access_ok
#define __clear_user __clear_user
-#define __copy_to_user __copy_to_user
-#define __copy_from_user __copy_from_user
#define __strnlen_user __strnlen_user
#define __strncpy_from_user __strncpy_from_user
#define __copy_to_user_inatomic __copy_to_user
diff --git a/arch/unicore32/include/asm/uaccess.h b/arch/unicore32/include/asm/uaccess.h
index 1196c88c2f9b..b2bcab69dfee 100644
--- a/arch/unicore32/include/asm/uaccess.h
+++ b/arch/unicore32/include/asm/uaccess.h
@@ -14,8 +14,6 @@
#include <asm/memory.h>
-#define __copy_from_user __copy_from_user
-#define __copy_to_user __copy_to_user
#define __strncpy_from_user __strncpy_from_user
#define __strnlen_user __strnlen_user
#define __clear_user __clear_user