B43_HF_SKCFPUP
hf &= ~B43_HF_SKCFPUP;
b43_hf_write(dev, b43_hf_read(dev) | B43_HF_SKCFPUP);
b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_SKCFPUP);