12.04 - How can I get rid of the 'wl_80211_attach Reg CFG80211 Phy' warning during boot?

When I switch on my laptop a message on a black screen appears :

[] INFO@wl_80211_attach Reg CFG80211 Phy.

It stays for only 1 sec , even if I try to type anything it will disappear after 1 sec and go to the login screen.

Is it something to do with wireless because my wi-fi network doesn’t show up in the list. After when I connect the Ethernet cable and refresh on my ISP website, does my wi-fi connection gets established.

lspci shows:

0c:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)

and rfkill list returns:

0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
1: phy0: Wireless LAN

    Soft blocked: no
    Hard blocked: no
2: brcmwl-0: Wireless LAN
    Soft blocked: no
    Hard blocked: no