b43: LP-PHY: note and explain specs inconsistency
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -80,6 +80,7 @@ static void b43_lpphy_op_free(struct b43_wldev *dev)
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dev->phy.lp = NULL;
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}
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/* http://bcm-v4.sipsolutions.net/802.11/PHY/LP/ReadBandSrom */
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static void lpphy_read_band_sprom(struct b43_wldev *dev)
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{
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struct b43_phy_lp *lpphy = dev->phy.lp;
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@ -101,6 +102,12 @@ static void lpphy_read_band_sprom(struct b43_wldev *dev)
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maxpwr = bus->sprom.maxpwr_bg;
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lpphy->max_tx_pwr_med_band = maxpwr;
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cckpo = bus->sprom.cck2gpo;
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/*
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* We don't read SPROM's opo as specs say. On rev8 SPROMs
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* opo == ofdm2gpo and we don't know any SSB with LP-PHY
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* and SPROM rev below 8.
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*/
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B43_WARN_ON(bus->sprom.revision < 8);
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ofdmpo = bus->sprom.ofdm2gpo;
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if (cckpo) {
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for (i = 0; i < 4; i++) {
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