diff options
Diffstat (limited to 'drivers/net/wireless/b43/dma.c')
| -rw-r--r-- | drivers/net/wireless/b43/dma.c | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c index 523355b8765..1d7982afc0a 100644 --- a/drivers/net/wireless/b43/dma.c +++ b/drivers/net/wireless/b43/dma.c @@ -431,9 +431,9 @@ static int alloc_ringmemory(struct b43_dmaring *ring) u16 ring_mem_size = (ring->type == B43_DMA_64BIT) ? B43_DMA64_RINGMEMSIZE : B43_DMA32_RINGMEMSIZE; - ring->descbase = dma_alloc_coherent(ring->dev->dev->dma_dev, - ring_mem_size, &(ring->dmabase), - GFP_KERNEL | __GFP_ZERO); + ring->descbase = dma_zalloc_coherent(ring->dev->dev->dma_dev, + ring_mem_size, &(ring->dmabase), + GFP_KERNEL); if (!ring->descbase) return -ENOMEM; @@ -1065,12 +1065,9 @@ static int b43_dma_set_mask(struct b43_wldev *dev, u64 mask) /* Try to set the DMA mask. If it fails, try falling back to a * lower mask, as we can always also support a lower one. */ while (1) { - err = dma_set_mask(dev->dev->dma_dev, mask); - if (!err) { - err = dma_set_coherent_mask(dev->dev->dma_dev, mask); - if (!err) - break; - } + err = dma_set_mask_and_coherent(dev->dev->dma_dev, mask); + if (!err) + break; if (mask == DMA_BIT_MASK(64)) { mask = DMA_BIT_MASK(32); fallback = true; @@ -1728,6 +1725,25 @@ drop_recycle_buffer: sync_descbuffer_for_device(ring, dmaaddr, ring->rx_buffersize); } +void b43_dma_handle_rx_overflow(struct b43_dmaring *ring) +{ + int current_slot, previous_slot; + + B43_WARN_ON(ring->tx); + + /* Device has filled all buffers, drop all packets and let TCP + * decrease speed. + * Decrement RX index by one will let the device to see all slots + * as free again + */ + /* + *TODO: How to increase rx_drop in mac80211? + */ + current_slot = ring->ops->get_current_rxslot(ring); + previous_slot = prev_slot(ring, current_slot); + ring->ops->set_current_rxslot(ring, previous_slot); +} + void b43_dma_rx(struct b43_dmaring *ring) { const struct b43_dma_ops *ops = ring->ops; |