Albert Barnes Commentary 1 Kings 11:34

"Howbeit I will not take the whole kingdom out of his hand; but I will make him prince all the days of his life, for David my servant`s sake whom I chose, who kept my commandments and my statutes;" — 1 Kings 11:34 (ASV)

Translate: However, I will not take any of the kingdom out of his hand. The context requires this meaning.