staging: unisys: visorbus: controlvm_respond add error handling

The function visorchanel_signalinsert now returns an error, propagate
the error up the stack to be handled.

Signed-off-by: David Kershner <david.kershner@unisys.com>
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed