From 1eae9639aac0f8de4d284f567ec722a822b52513 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?= Date: Tue, 1 Nov 2016 14:27:38 -0300 Subject: Linux-libre 4.8.6-gnu --- drivers/net/wireless/ath/ath10k/ce.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/net/wireless/ath/ath10k/ce.c') diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c index 9fb8d7472..da9998ea9 100644 --- a/drivers/net/wireless/ath/ath10k/ce.c +++ b/drivers/net/wireless/ath/ath10k/ce.c @@ -433,6 +433,13 @@ void ath10k_ce_rx_update_write_idx(struct ath10k_ce_pipe *pipe, u32 nentries) unsigned int nentries_mask = dest_ring->nentries_mask; unsigned int write_index = dest_ring->write_index; u32 ctrl_addr = pipe->ctrl_addr; + u32 cur_write_idx = ath10k_ce_dest_ring_write_index_get(ar, ctrl_addr); + + /* Prevent CE ring stuck issue that will occur when ring is full. + * Make sure that write index is 1 less than read index. + */ + if ((cur_write_idx + nentries) == dest_ring->sw_index) + nentries -= 1; write_index = CE_RING_IDX_ADD(nentries_mask, write_index, nentries); ath10k_ce_dest_ring_write_index_set(ar, ctrl_addr, write_index); -- cgit v1.2.3