diff options
| author | Bob Copeland <me@bobcopeland.com> | 2010-04-07 23:55:56 -0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-04-08 15:24:14 -0400 |
| commit | 1968cc78d91c79857089713bf3f3cceb5e9c63ae (patch) | |
| tree | feaad505977ddd15f930b0d9411b15e1d40e2163 | |
| parent | b5878a2dc5e7e7f031a52c3e15b571224cb6b540 (diff) | |
ath5k: correct channel setting for 2.5 mhz spacing
These channels aren't selectable anyway, but our calculations
for 2.5 mhz frequencies are incorrect. The value is supposed to
be:
(frequency - reference) * (10/25)
i.e., divide by 2.5, but we were instead doing:
(10 * frequency - reference) / 25.
Additionally, the check for (frequency % 5 == 2) had an extra
subtraction that wasn't in madwifi HAL.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Acked-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/phy.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c index b6704c93f808..fcfc32d4da20 100644 --- a/drivers/net/wireless/ath/ath5k/phy.c +++ b/drivers/net/wireless/ath/ath5k/phy.c @@ -979,7 +979,7 @@ static int ath5k_hw_rf5112_channel(struct ath5k_hw *ah, return -EINVAL; data0 = ath5k_hw_bitswap((data0 << 2) & 0xff, 8); - } else if ((c - (c % 5)) != 2 || c > 5435) { + } else if ((c % 5) != 2 || c > 5435) { if (!(c % 20) && c >= 5120) { data0 = ath5k_hw_bitswap(((c - 4800) / 20 << 2), 8); data2 = ath5k_hw_bitswap(3, 2); @@ -992,7 +992,7 @@ static int ath5k_hw_rf5112_channel(struct ath5k_hw *ah, } else return -EINVAL; } else { - data0 = ath5k_hw_bitswap((10 * (c - 2) - 4800) / 25 + 1, 8); + data0 = ath5k_hw_bitswap((10 * (c - 2 - 4800)) / 25 + 1, 8); data2 = ath5k_hw_bitswap(0, 2); } @@ -1020,7 +1020,7 @@ static int ath5k_hw_rf2425_channel(struct ath5k_hw *ah, data0 = ath5k_hw_bitswap((c - 2272), 8); data2 = 0; /* ? 5GHz ? */ - } else if ((c - (c % 5)) != 2 || c > 5435) { + } else if ((c % 5) != 2 || c > 5435) { if (!(c % 20) && c < 5120) data0 = ath5k_hw_bitswap(((c - 4800) / 20 << 2), 8); else if (!(c % 10)) @@ -1031,7 +1031,7 @@ static int ath5k_hw_rf2425_channel(struct ath5k_hw *ah, return -EINVAL; data2 = ath5k_hw_bitswap(1, 2); } else { - data0 = ath5k_hw_bitswap((10 * (c - 2) - 4800) / 25 + 1, 8); + data0 = ath5k_hw_bitswap((10 * (c - 2 - 4800)) / 25 + 1, 8); data2 = ath5k_hw_bitswap(0, 2); } |