From: Ben Greear Date: Wed, 31 May 2017 11:21:26 +0000 (+0300) Subject: ath10k: initialize nbytes to 0 X-Git-Tag: v4.14-rc1~596^2~87^2^2~11 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4f40b423339b8121fbd5d6735bf6942020355c98;p=platform%2Fkernel%2Flinux-rpi.git 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: Ben Greear Signed-off-by: Kalle Valo --- diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c index ee1090c..5130956 100644 --- a/drivers/net/wireless/ath/ath10k/ce.c +++ b/drivers/net/wireless/ath/ath10k/ce.c @@ -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);