diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c
index d6d74d2e09f4..f0a54c59e16a 100644
--- a/drivers/usb/host/ehci-dbg.c
+++ b/drivers/usb/host/ehci-dbg.c
@@ -785,7 +785,7 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
 			default:		/* unknown */
 				break;
 			}
-			temp = (cap >> 8) & 0xff;
+			offset = (cap >> 8) & 0xff;
 		}
 	}
 #endif