From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 28 Mar 2017 04:51:43 +0000 (-0400)
Subject: asm-generic/uaccess.h: don't mess with __copy_{to,from}_user
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3fb50075284433093eba7c43e75b16eaa36eeabd;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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>
---

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
diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h
index 4b4f4a7f22c6..b048246a606b 100644
--- a/include/asm-generic/uaccess.h
+++ b/include/asm-generic/uaccess.h
@@ -47,69 +47,6 @@ static inline int __access_ok(unsigned long addr, unsigned long size)
 }
 #endif
 
-/*
- * architectures with an MMU should override these two
- */
-#ifndef __copy_from_user
-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;
-#ifdef CONFIG_64BIT
-		case 8:
-			*(u64 *)to = *(u64 __force *)from;
-			return 0;
-#endif
-		default:
-			break;
-		}
-	}
-
-	memcpy(to, (const void __force *)from, n);
-	return 0;
-}
-#endif
-
-#ifndef __copy_to_user
-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;
-#ifdef CONFIG_64BIT
-		case 8:
-			*(u64 __force *)to = *(u64 *)from;
-			return 0;
-#endif
-		default:
-			break;
-		}
-	}
-
-	memcpy((void __force *)to, from, n);
-	return 0;
-}
-#endif
-
 /*
  * These are the main single-value transfer routines.  They automatically
  * use the right size if we just have the right pointer type.