Commit 4f40b423 authored by Ben Greear's avatar Ben Greear Committed by Kalle Valo
Browse files

ath10k: initialize nbytes to 0 



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: default avatarBen Greear <greearb@candelatech.com>
Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
parent 6bb099b0

drivers/net/wireless/ath/ath10k/ce.c

+4 −0
Original line number Diff line number Diff line
@@ -594,6 +594,7 @@ 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) {

		/*
@@ -623,6 +624,9 @@ 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);

CRA Git | Maintained and supported by SUSTech CRA and CCSE