hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

ar9170: fix bug in iq-auto calibration value calculation 

This patch fixes a embarrassing bug which was introduced by:
"[PATCH] ar9170: implement frequency calibration for one-stage/openfw"

The phy_data variable initialization has to done outside the for-loop
scope. This is because the for-loop uses u32 phy_data variable more
like a 4-byte field. But in each run only a single byte is calculated.
Therefore phy_data content needs to stay the same for at least 3 more
iterations, before the complete set can be uploaded.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Christian Lamparter 2009-09-29 20:47:25 +02:00 committed by John W. Linville
parent 78bd6bbf3c
commit e16c1bb67a
1 changed files with 2 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/wireless/ath/ar9170/phy.c
View File

@ -1141,7 +1141,8 @@ static int ar9170_set_freq_cal_data(struct ar9170 *ar,
u8 vpds[2][AR5416_PD_GAIN_ICEPTS];
u8 pwrs[2][AR5416_PD_GAIN_ICEPTS];
int chain, idx, i;
u8 f;
u32 phy_data = 0;
u8 f, tmp;
switch (channel->band) {
case IEEE80211_BAND_2GHZ:
@ -1208,9 +1209,6 @@ static int ar9170_set_freq_cal_data(struct ar9170 *ar,
}
for (i = 0; i < 76; i++) {
u32 phy_data;
u8 tmp;
if (i < 25) {
tmp = ar9170_interpolate_val(i, &pwrs[0][0],
&vpds[0][0]);