[PATCH 4.7 176/184] openrisc: fix copy_from_user()

4.7-stable review patch. If anyone has any objections, please let me know. -- From: Al Viro commit acb2505d0119033a80c85ac8d02dccae41271667 upstream. ... that should zero on faults. Also remove the helpful logics wrt range truncation copied from

[PATCH 4.7 176/184] openrisc: fix copy_from_user()

4.7-stable review patch. If anyone has any objections, please let me know. -- From: Al Viro commit acb2505d0119033a80c85ac8d02dccae41271667 upstream. ... that should zero on faults. Also remove the helpful logics wrt range truncation copied from ppc32. Where it had ever