From: Ben Greear <[email protected]> ath10k firmware checks nbytes == 0 as part of determining if DMA has completed successfully. To help make this work more often, have the driver initialize nbytes to zero when freeing the descriptor slot.
Signed-off-by: Ben Greear <[email protected]> --- I am not yet sure if this actually fixes a real problem or not...curious if others think this is an improvement. drivers/net/wireless/ath/ath10k/ce.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c index da9998e..15bc7fb 100644 --- a/drivers/net/wireless/ath/ath10k/ce.c +++ b/drivers/net/wireless/ath/ath10k/ce.c @@ -595,6 +595,7 @@ int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state, unsigned int nentries_mask = src_ring->nentries_mask; unsigned int sw_index = src_ring->sw_index; unsigned int read_index; + struct ce_desc *desc; if (src_ring->hw_index == sw_index) { /* @@ -624,6 +625,9 @@ int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state, /* sanity */ src_ring->per_transfer_context[sw_index] = NULL; + desc = CE_SRC_RING_TO_DESC(src_ring->base_addr_owner_space, + sw_index); + desc->nbytes = 0; /* Update sw_index */ sw_index = CE_RING_IDX_INCR(nentries_mask, sw_index); -- 2.4.11
