sparc64: Prepare to move to more saner user copy exception handling.

[cascardo/linux.git] / arch / sparc / include / asm / uaccess_64.h

diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h
index f8518df..0244012 100644 (file)
--- a/arch/sparc/include/asm/uaccess_64.h
+++ b/arch/sparc/include/asm/uaccess_64.h
@@ -198,8 +198,11 @@ copy_from_user(void *to, const void __user *from, unsigned long size)
        check_object_size(to, size, false);
 
        ret = ___copy_from_user(to, from, size);
-       if (unlikely(ret))
-               ret = copy_from_user_fixup(to, from, size);
+       if (unlikely(ret)) {
+               if ((long)ret < 0)
+                       ret = copy_from_user_fixup(to, from, size);
+               return ret;
+       }
 
        return ret;
 }
@@ -218,8 +221,11 @@ copy_to_user(void __user *to, const void *from, unsigned long size)
        check_object_size(from, size, true);
 
        ret = ___copy_to_user(to, from, size);
-       if (unlikely(ret))
-               ret = copy_to_user_fixup(to, from, size);
+       if (unlikely(ret)) {
+               if ((long)ret < 0)
+                       ret = copy_to_user_fixup(to, from, size);
+               return ret;
+       }
        return ret;
 }
 #define __copy_to_user copy_to_user
@@ -234,8 +240,11 @@ copy_in_user(void __user *to, void __user *from, unsigned long size)
 {
        unsigned long ret = ___copy_in_user(to, from, size);
 
-       if (unlikely(ret))
-               ret = copy_in_user_fixup(to, from, size);
+       if (unlikely(ret)) {
+               if ((long)ret < 0)
+                       ret = copy_in_user_fixup(to, from, size);
+               return ret;
+       }
        return ret;
 }
 #define __copy_in_user copy_in_user