diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/dma.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/dma.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index 3a9af8931c35..02daeefb0761 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -93,7 +93,7 @@ mt76_dma_queue_reset(struct mt76_dev *dev, struct mt76_queue *q) { int i; - if (!q) + if (!q || !q->ndesc) return; /* clear descriptors */ @@ -233,7 +233,7 @@ mt76_dma_tx_cleanup(struct mt76_dev *dev, struct mt76_queue *q, bool flush) struct mt76_queue_entry entry; int last; - if (!q) + if (!q || !q->ndesc) return; spin_lock_bh(&q->cleanup_lock); @@ -448,6 +448,9 @@ mt76_dma_rx_fill(struct mt76_dev *dev, struct mt76_queue *q) int len = SKB_WITH_OVERHEAD(q->buf_size); int offset = q->buf_offset; + if (!q->ndesc) + return 0; + spin_lock_bh(&q->lock); while (q->queued < q->ndesc - 1) { @@ -465,6 +468,7 @@ mt76_dma_rx_fill(struct mt76_dev *dev, struct mt76_queue *q) qbuf.addr = addr + offset; qbuf.len = len - offset; + qbuf.skip_unmap = false; mt76_dma_add_buf(dev, q, &qbuf, 1, 0, buf, NULL); frames++; } @@ -484,6 +488,9 @@ mt76_dma_rx_cleanup(struct mt76_dev *dev, struct mt76_queue *q) void *buf; bool more; + if (!q->ndesc) + return; + spin_lock_bh(&q->lock); do { buf = mt76_dma_dequeue(dev, q, true, NULL, NULL, &more); @@ -508,6 +515,9 @@ mt76_dma_rx_reset(struct mt76_dev *dev, enum mt76_rxq_id qid) struct mt76_queue *q = &dev->q_rx[qid]; int i; + if (!q->ndesc) + return; + for (i = 0; i < q->ndesc; i++) q->desc[i].ctrl = cpu_to_le32(MT_DMA_CTL_DMA_DONE); |