The CHANNEL_HT flag is insignificant for fast channel change conditions,
since it does not affect any important part of the hardware reset /
channel setup.
Scanning usually runs with HT disabled, so this change will slightly
improve scan time on many chipsets.
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/hw.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 4046da5..94652e5 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1503,8 +1503,9 @@ static bool ath9k_hw_channel_change(struct ath_hw *ah,
int r;
if (pCap->hw_caps & ATH9K_HW_CAP_FCC_BAND_SWITCH) {
- band_switch = IS_CHAN_5GHZ(ah->curchan) != IS_CHAN_5GHZ(chan);
- mode_diff = (chan->channelFlags != ah->curchan->channelFlags);
+ u32 flags_diff = chan->channelFlags ^ ah->curchan->channelFlags;
+ band_switch = !!(flags_diff & CHANNEL_5GHZ);
+ mode_diff = !!(flags_diff & ~CHANNEL_HT);
}
for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
@@ -1816,7 +1817,7 @@ static int ath9k_hw_do_fastcc(struct ath_hw *ah, struct ath9k_channel *chan)
* If cross-band fcc is not supoprted, bail out if channelFlags differ.
*/
if (!(pCap->hw_caps & ATH9K_HW_CAP_FCC_BAND_SWITCH) &&
- chan->channelFlags != ah->curchan->channelFlags)
+ ((chan->channelFlags ^ ah->curchan->channelFlags) & ~CHANNEL_HT))
goto fail;
if (!ath9k_hw_check_alive(ah))
--
1.8.3.4 (Apple Git-47)
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