If one has been arrested and charged with carrying concealed weapon, is that the official charge?

Basically, I know somebody being arrested and charged with carrying concealed weapon in the state of CA, L.A. county. Evidences show that he was charged with the wrong code (he should've been charged with LLC). Now, he's researched that it is LEGAL to do open carry weapon (showed in the penal code.), so long as it's not loaded. Under grave danger, one's allowed to have loaded under the dangerous cirstance. How would the DA sees that?