Check the count before incrementing it to match vendor code behavior. This defers the adjustment by one more tick, which should improve accuracy
Signed-off-by: Felix Fietkau <[email protected]> --- drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c b/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c index 374bc9d91f12..f0198eea2bb8 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c @@ -79,24 +79,24 @@ mt76x02_resync_beacon_timer(struct mt76x02_dev *dev) * Beacon timer drifts by 1us every tick, the timer is configured * in 1/16 TU (64us) units. */ - if (dev->tbtt_count < 62) + if (dev->tbtt_count < 63) return; - if (dev->tbtt_count >= 64) { - dev->tbtt_count = 0; - return; - } - /* * The updated beacon interval takes effect after two TBTT, because * at this point the original interval has already been loaded into * the next TBTT_TIMER value */ - if (dev->tbtt_count == 62) + if (dev->tbtt_count == 63) timer_val -= 1; mt76_rmw_field(dev, MT_BEACON_TIME_CFG, MT_BEACON_TIME_CFG_INTVAL, timer_val); + + if (dev->tbtt_count >= 64) { + dev->tbtt_count = 0; + return; + } } static void mt76x02_pre_tbtt_tasklet(unsigned long arg) -- 2.17.0
