diff options
| author | Felix Fietkau <nbd@nbd.name> | 2020-01-20 12:11:07 +0100 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2020-02-14 10:06:06 +0100 |
| commit | 8f6c4f7ba1a143737f73a3f087d41bb198a35ce3 (patch) | |
| tree | 861134161e15a5a329ba8be338af530c3fc0cc9d /drivers/net/wireless/mediatek/mt76/dma.c | |
| parent | 93eaec7625f13cffb593b471405b017c7e64d4ee (diff) | |
| download | linux-8f6c4f7ba1a143737f73a3f087d41bb198a35ce3.tar.bz2 | |
mt76: dma: do not write cpu_idx on rx queue reset until after refill
The hardware should only start processing the ring after at least one
buffer has been added
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/dma.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/dma.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index bcb11bb9aeeb..e5dd7080e88e 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -132,6 +132,11 @@ mt76_dma_sync_idx(struct mt76_dev *dev, struct mt76_queue *q) writel(q->ndesc, &q->regs->ring_size); q->head = readl(&q->regs->dma_idx); q->tail = q->head; +} + +static void +mt76_dma_kick_queue(struct mt76_dev *dev, struct mt76_queue *q) +{ writel(q->head, &q->regs->cpu_idx); } @@ -193,8 +198,10 @@ mt76_dma_tx_cleanup(struct mt76_dev *dev, enum mt76_txq_id qid, bool flush) dev->q_tx[__MT_TXQ_MAX + i].swq_queued -= n_swq_queued[4 + i]; } - if (flush) + if (flush) { mt76_dma_sync_idx(dev, q); + mt76_dma_kick_queue(dev, q); + } wake = wake && q->stopped && qid < IEEE80211_NUM_ACS && q->queued < q->ndesc - 8; @@ -257,12 +264,6 @@ mt76_dma_dequeue(struct mt76_dev *dev, struct mt76_queue *q, bool flush, return mt76_dma_get_buf(dev, q, idx, len, info, more); } -static void -mt76_dma_kick_queue(struct mt76_dev *dev, struct mt76_queue *q) -{ - writel(q->head, &q->regs->cpu_idx); -} - static int mt76_dma_tx_queue_skb_raw(struct mt76_dev *dev, enum mt76_txq_id qid, struct sk_buff *skb, u32 tx_info) |