There's various songs with this name, so I may have the wrong one. Is this it?
Knocking On Your Door
from Jimmy Reed Is Back
I'm a-knockin' at your door, baby, wonderin' why I can't get in?
I'm knockin' at your door, baby, wonderin' why I can't get in?
I been knockin' at your door, baby, ever since I don't know when
Well, I ain't gonna leave, baby, I'm gonna knock, you have no doubt
Well, I ain't gonna leave, baby, honey, don't you have no doubt
Honey if, Jimmy Reed, can't get in, ain't nobody comin' out
The door's unlocked, the chains are down
Real quiet inside, can't hear a sound
If you asleep, everybody would know
You wake up er'ybody, by the way you snore
I know you're listenin', ev'ry word I say
If I can't get in, ain't nobody goin' away
I've been knockin' on the door, baby
Honey, how come I can't get in?
I've been knockin' on your door, baby
Ever since I don't know when
I hear ya man!