sparc64: Convert copy_in_user to accurate exception reporting.

[ Upstream commit 0096ac9f47b1a2e851b3165d44065d18e5f13d58 ]

Report the exact number of bytes which have not been successfully
copied when an exception occurs, using the running remaining length.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed