s390/uaccess: normalize order of parameters of indirect uaccess function calls

For some unknown reason the indirect uaccess functions on s390 implement a
different parameter order than what is usual.

e.g.:

unsigned long copy_to_user(void *to, const void *from, unsigned long n);
vs.
size_t (*copy_to_user)(size_t n, void __user * to, const void *from);

Let's get rid of this confusing parameter reordering.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 17 insertions, 17 deletions

diff --git a/arch/s390/lib/uaccess_pt.c b/arch/s390/lib/uaccess_pt.c
index 61ebcc9ccb34..2fa696b39b56 100644
--- a/arch/s390/lib/uaccess_pt.c
+++ b/arch/s390/lib/uaccess_pt.c
@@ -22,7 +22,7 @@
 #define SLR	"slgr"
 #endif
 
-static size_t strnlen_kernel(size_t count, const char __user *src)
+static size_t strnlen_kernel(const char __user *src, size_t count)
 {
 	register unsigned long reg0 asm("0") = 0UL;
 	unsigned long tmp1, tmp2;
@@ -42,8 +42,8 @@ static size_t strnlen_kernel(size_t count, const char __user *src)
 	return count;
 }
 
-static size_t copy_in_kernel(size_t count, void __user *to,
-			     const void __user *from)
+static size_t copy_in_kernel(void __user *to, const void __user *from,
+			     size_t count)
 {
 	unsigned long tmp1;
 
@@ -211,26 +211,26 @@ fault:
 	return 0;
 }
 
-static size_t copy_from_user_pt(size_t n, const void __user *from, void *to)
+static size_t copy_from_user_pt(void *to, const void __user *from, size_t n)
 {
 	size_t rc;
 
 	if (segment_eq(get_fs(), KERNEL_DS))
-		return copy_in_kernel(n, (void __user *) to, from);
+		return copy_in_kernel((void __user *) to, from, n);
 	rc = __user_copy_pt((unsigned long) from, to, n, 0);
 	if (unlikely(rc))
 		memset(to + n - rc, 0, rc);
 	return rc;
 }
 
-static size_t copy_to_user_pt(size_t n, void __user *to, const void *from)
+static size_t copy_to_user_pt(void __user *to, const void *from, size_t n)
 {
 	if (segment_eq(get_fs(), KERNEL_DS))
-		return copy_in_kernel(n, to, (void __user *) from);
+		return copy_in_kernel(to, (void __user *) from, n);
 	return __user_copy_pt((unsigned long) to, (void *) from, n, 1);
 }
 
-static size_t clear_user_pt(size_t n, void __user *to)
+static size_t clear_user_pt(void __user *to, size_t n)
 {
 	void *zpage = (void *) empty_zero_page;
 	long done, size, ret;
@@ -242,7 +242,7 @@ static size_t clear_user_pt(size_t n, void __user *to)
 		else
 			size = n - done;
 		if (segment_eq(get_fs(), KERNEL_DS))
-			ret = copy_in_kernel(n, to, (void __user *) zpage);
+			ret = copy_in_kernel(to, (void __user *) zpage, n);
 		else
 			ret = __user_copy_pt((unsigned long) to, zpage, size, 1);
 		done += size;
@@ -253,7 +253,7 @@ static size_t clear_user_pt(size_t n, void __user *to)
 	return 0;
 }
 
-static size_t strnlen_user_pt(size_t count, const char __user *src)
+static size_t strnlen_user_pt(const char __user *src, size_t count)
 {
 	unsigned long uaddr = (unsigned long) src;
 	struct mm_struct *mm = current->mm;
@@ -263,7 +263,7 @@ static size_t strnlen_user_pt(size_t count, const char __user *src)
 	if (unlikely(!count))
 		return 0;
 	if (segment_eq(get_fs(), KERNEL_DS))
-		return strnlen_kernel(count, src);
+		return strnlen_kernel(src, count);
 	if (!mm)
 		return 0;
 	done = 0;
@@ -289,8 +289,8 @@ fault:
 	goto retry;
 }
 
-static size_t strncpy_from_user_pt(size_t count, const char __user *src,
-				   char *dst)
+static size_t strncpy_from_user_pt(char *dst, const char __user *src,
+				   size_t count)
 {
 	size_t done, len, offset, len_str;
 
@@ -301,7 +301,7 @@ static size_t strncpy_from_user_pt(size_t count, const char __user *src,
 		offset = (size_t)src & ~PAGE_MASK;
 		len = min(count - done, PAGE_SIZE - offset);
 		if (segment_eq(get_fs(), KERNEL_DS)) {
-			if (copy_in_kernel(len, (void __user *) dst, src))
+			if (copy_in_kernel((void __user *) dst, src, len))
 				return -EFAULT;
 		} else {
 			if (__user_copy_pt((unsigned long) src, dst, len, 0))
@@ -315,8 +315,8 @@ static size_t strncpy_from_user_pt(size_t count, const char __user *src,
 	return done;
 }
 
-static size_t copy_in_user_pt(size_t n, void __user *to,
-			      const void __user *from)
+static size_t copy_in_user_pt(void __user *to, const void __user *from,
+			      size_t n)
 {
 	struct mm_struct *mm = current->mm;
 	unsigned long offset_max, uaddr, done, size, error_code;
@@ -326,7 +326,7 @@ static size_t copy_in_user_pt(size_t n, void __user *to,
 	int write_user;
 
 	if (segment_eq(get_fs(), KERNEL_DS))
-		return copy_in_kernel(n, to, from);
+		return copy_in_kernel(to, from, n);
 	if (!mm)
 		return n;
 	done = 0;