From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 28 Mar 2017 05:33:09 +0000 (-0400)
Subject: um: switch to RAW_COPY_USER
X-Git-Tag: v4.12-rc1~161^2~2^29
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a668ce3a001fe0564deb6357129bfd81f757743b;p=karo-tx-linux.git

um: switch to RAW_COPY_USER

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common
index fd443852103c..e13f763849b1 100644
--- a/arch/um/Kconfig.common
+++ b/arch/um/Kconfig.common
@@ -13,6 +13,7 @@ config UML
 	select GENERIC_CLOCKEVENTS
 	select HAVE_GCC_PLUGINS
 	select TTY # Needed for line.c
+	select ARCH_HAS_RAW_COPY_USER
 
 config MMU
 	bool
diff --git a/arch/um/include/asm/uaccess.h b/arch/um/include/asm/uaccess.h
index 9396c8a4e920..cc00fc50768f 100644
--- a/arch/um/include/asm/uaccess.h
+++ b/arch/um/include/asm/uaccess.h
@@ -21,8 +21,8 @@
 #define __addr_range_nowrap(addr, size) \
 	((unsigned long) (addr) <= ((unsigned long) (addr) + (size)))
 
-extern long __copy_from_user(void *to, const void __user *from, unsigned long n);
-extern long __copy_to_user(void __user *to, const void *from, unsigned long n);
+extern unsigned long raw_copy_from_user(void *to, const void __user *from, unsigned long n);
+extern unsigned long raw_copy_to_user(void __user *to, const void *from, unsigned long n);
 extern long __strncpy_from_user(char *dst, const char __user *src, long count);
 extern long __strnlen_user(const void __user *str, long len);
 extern unsigned long __clear_user(void __user *mem, unsigned long len);
@@ -33,8 +33,8 @@ static inline int __access_ok(unsigned long addr, unsigned long size);
 #define __clear_user __clear_user
 #define __strnlen_user __strnlen_user
 #define __strncpy_from_user __strncpy_from_user
-#define __copy_to_user_inatomic __copy_to_user
-#define __copy_from_user_inatomic __copy_from_user
+#define INLINE_COPY_FROM_USER
+#define INLINE_COPY_TO_USER
 
 #include <asm-generic/uaccess.h>
 
diff --git a/arch/um/kernel/skas/uaccess.c b/arch/um/kernel/skas/uaccess.c
index 22c9f79db8e6..d450797a3a7c 100644
--- a/arch/um/kernel/skas/uaccess.c
+++ b/arch/um/kernel/skas/uaccess.c
@@ -139,7 +139,7 @@ static int copy_chunk_from_user(unsigned long from, int len, void *arg)
 	return 0;
 }
 
-long __copy_from_user(void *to, const void __user *from, unsigned long n)
+unsigned long raw_copy_from_user(void *to, const void __user *from, unsigned long n)
 {
 	if (uaccess_kernel()) {
 		memcpy(to, (__force void*)from, n);
@@ -148,7 +148,7 @@ long __copy_from_user(void *to, const void __user *from, unsigned long n)
 
 	return buffer_op((unsigned long) from, n, 0, copy_chunk_from_user, &to);
 }
-EXPORT_SYMBOL(__copy_from_user);
+EXPORT_SYMBOL(raw_copy_from_user);
 
 static int copy_chunk_to_user(unsigned long to, int len, void *arg)
 {
@@ -159,7 +159,7 @@ static int copy_chunk_to_user(unsigned long to, int len, void *arg)
 	return 0;
 }
 
-long __copy_to_user(void __user *to, const void *from, unsigned long n)
+unsigned long raw_copy_to_user(void __user *to, const void *from, unsigned long n)
 {
 	if (uaccess_kernel()) {
 		memcpy((__force void *) to, from, n);
@@ -168,7 +168,7 @@ long __copy_to_user(void __user *to, const void *from, unsigned long n)
 
 	return buffer_op((unsigned long) to, n, 1, copy_chunk_to_user, &from);
 }
-EXPORT_SYMBOL(__copy_to_user);
+EXPORT_SYMBOL(raw_copy_to_user);
 
 static int strncpy_chunk_from_user(unsigned long from, int len, void *arg)
 {