Commit 64cdb0e3 authored by Fabio Rossi's avatar Fabio Rossi Committed by John W. Linville

ath5k: fix interpolation with equal power levels

When the EEPROM contains weird values for the power levels we have to
fix the interpolation process.
Signed-off-by: default avatarFabio Rossi <rossi.f@inwind.it>
Acked-by: default avatarNick Kossifidis <mickflemm@gmail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 910cfee3
......@@ -1487,28 +1487,35 @@ ath5k_get_linear_pcdac_min(const u8 *stepL, const u8 *stepR,
{
s8 tmp;
s16 min_pwrL, min_pwrR;
s16 pwr_i = pwrL[0];
s16 pwr_i;
if (pwrL[0] == pwrL[1])
min_pwrL = pwrL[0];
else {
pwr_i = pwrL[0];
do {
pwr_i--;
tmp = (s8) ath5k_get_interpolated_value(pwr_i,
pwrL[0], pwrL[1],
stepL[0], stepL[1]);
} while (tmp > 1);
min_pwrL = pwr_i;
}
if (pwrR[0] == pwrR[1])
min_pwrR = pwrR[0];
else {
pwr_i = pwrR[0];
do {
pwr_i--;
tmp = (s8) ath5k_get_interpolated_value(pwr_i,
pwrR[0], pwrR[1],
stepR[0], stepR[1]);
} while (tmp > 1);
min_pwrR = pwr_i;
}
/* Keep the right boundary so that it works for both curves */
return max(min_pwrL, min_pwrR);
......
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