1 files changed, 14 insertions, 10 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index f9ab3726d7f8..c60779069508 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -1189,6 +1189,7 @@ static const struct rf_channel rf_vals[] = {
 
 static int rt2800pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 {
+	struct rt2x00_chip *chip = &rt2x00dev->chip;
 	struct hw_mode_spec *spec = &rt2x00dev->spec;
 	struct channel_info *info;
 	char *tx_power1;
@@ -1204,7 +1205,9 @@ static int rt2800pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 	    IEEE80211_HW_SIGNAL_DBM |
 	    IEEE80211_HW_SUPPORTS_PS |
 	    IEEE80211_HW_PS_NULLFUNC_STACK;
-	rt2x00dev->hw->extra_tx_headroom = TXWI_DESC_SIZE;
+
+	if (rt2x00_intf_is_pci(rt2x00dev))
+		rt2x00dev->hw->extra_tx_headroom = TXWI_DESC_SIZE;
 
 	SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev);
 	SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
@@ -1219,17 +1222,18 @@ static int rt2800pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
 	spec->supported_bands = SUPPORT_BAND_2GHZ;
 	spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;
 
-	if (rt2x00_rf(&rt2x00dev->chip, RF2820) ||
-	    rt2x00_rf(&rt2x00dev->chip, RF2720) ||
-	    rt2x00_rf(&rt2x00dev->chip, RF3020) ||
-	    rt2x00_rf(&rt2x00dev->chip, RF3021) ||
-	    rt2x00_rf(&rt2x00dev->chip, RF3022) ||
-	    rt2x00_rf(&rt2x00dev->chip, RF2020) ||
-	    rt2x00_rf(&rt2x00dev->chip, RF3052)) {
+	if (rt2x00_rf(chip, RF2820) ||
+	    rt2x00_rf(chip, RF2720) ||
+	    (rt2x00_intf_is_pci(rt2x00dev) &&
+	     (rt2x00_rf(chip, RF3020) ||
+	      rt2x00_rf(chip, RF3021) ||
+	      rt2x00_rf(chip, RF3022) ||
+	      rt2x00_rf(chip, RF2020) ||
+	      rt2x00_rf(chip, RF3052)))) {
 		spec->num_channels = 14;
 		spec->channels = rf_vals;
-	} else if (rt2x00_rf(&rt2x00dev->chip, RF2850) ||
-		   rt2x00_rf(&rt2x00dev->chip, RF2750)) {
+	} else if (rt2x00_rf(chip, RF2850) ||
+		   rt2x00_rf(chip, RF2750)) {
 		spec->supported_bands |= SUPPORT_BAND_5GHZ;
 		spec->num_channels = ARRAY_SIZE(rf_vals);
 		spec->channels = rf_vals;