Suspending Habeas corpus did what?

It stopped the riots that were breaking out as Lincolns troops went through Maryland to get to Washington. Many of the riots were between confederate supporters in Maryland and the Union Soldiers. Suspending Habeas Corpus also would keep Northerners that were sympathetic to the southern cause from interfering with war measures. Basically it was Lincolns way of staying in control but there was a lot of controversy because technically Lincoln did not have the right to do this, it was only legislative and a judicial power.