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Commit eb83bbf5 authored by Larry Finger's avatar Larry Finger Committed by John W. Linville
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rtl8187: Fix error in setting OFDM power settings for RTL8187L 



After reports of poor performance, a review of the latest vendor driver
(rtl8187_linux_26.1025.0328.2007) for RTL8187L devices was undertaken.

A difference was found in the code used to index the OFDM power tables. When
the Linux driver was changed, my unit works at a much greater range than
before. I think this fixes Bugzilla #12380 and has been tested by at least
two other users.

Signed-off-by: default avatarLarry Finger <Larry.Finger@lwfinger.net>
Tested-by: default avatarMartín Ernesto Barreyro <barreyromartin@gmail.com>
Cc: Stable <stable@kernel.org>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent e6a27165

drivers/net/wireless/rtl818x/rtl8187_rtl8225.c

+8 −2
Original line number Diff line number Diff line
@@ -285,7 +285,10 @@ static void rtl8225_rf_set_tx_power(struct ieee80211_hw *dev, int channel) 
	ofdm_power = priv->channels[channel - 1].hw_value >> 4;



	cck_power = min(cck_power, (u8)11);

	ofdm_power = min(ofdm_power, (u8)35);

	if (ofdm_power > (u8)15)

		ofdm_power = 25;

	else

		ofdm_power += 10;



	rtl818x_iowrite8(priv, &priv->map->TX_GAIN_CCK,

			 rtl8225_tx_gain_cck_ofdm[cck_power / 6] >> 1);
@@ -536,7 +539,10 @@ static void rtl8225z2_rf_set_tx_power(struct ieee80211_hw *dev, int channel) 
	cck_power += priv->txpwr_base & 0xF;

	cck_power = min(cck_power, (u8)35);



	ofdm_power = min(ofdm_power, (u8)15);

	if (ofdm_power > (u8)15)

		ofdm_power = 25;

	else

		ofdm_power += 10;

	ofdm_power += priv->txpwr_base >> 4;

	ofdm_power = min(ofdm_power, (u8)35);