B43_NPHY_BANDCTL
ghz5 = b43_phy_read(dev, B43_NPHY_BANDCTL)
if (!(b43_phy_read(dev, B43_NPHY_BANDCTL) &
b43_phy_mask(dev, B43_NPHY_BANDCTL, ~B43_NPHY_BANDCTL_5GHZ);
b43_phy_set(dev, B43_NPHY_BANDCTL, B43_NPHY_BANDCTL_5GHZ);
b43_phy_mask(dev, B43_NPHY_BANDCTL, ~B43_NPHY_BANDCTL_5GHZ);