Commit 2703bafc authored by Felix Fietkau's avatar Felix Fietkau
Browse files

mt76: fix rx dma ring descriptor state on reset 



To avoid having the hardware potentially write to memory behind stale
descriptors, set the dma-done flag on all of them before cleaning up
allocated rx buffers

Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent 3e384828

drivers/net/wireless/mediatek/mt76/dma.c

+1 −1
Original line number Diff line number Diff line
@@ -437,7 +437,7 @@ mt76_dma_rx_reset(struct mt76_dev *dev, enum mt76_rxq_id qid) 
	int i;



	for (i = 0; i < q->ndesc; i++)

		q->desc[i].ctrl &= ~cpu_to_le32(MT_DMA_CTL_DMA_DONE);

		q->desc[i].ctrl = cpu_to_le32(MT_DMA_CTL_DMA_DONE);



	mt76_dma_rx_cleanup(dev, q);

	mt76_dma_sync_idx(dev, q);