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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-11-01 14:27:38 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-11-01 14:27:38 -0300 |
| commit | 1eae9639aac0f8de4d284f567ec722a822b52513 (patch) | |
| tree | 34e45a5c5e6a1033a444bea952ba9199e57f3a19 /drivers/net/wireless/ath/ath10k/ce.c | |
| parent | 037d32aa8f748e39844d2a5b607fb063b4583843 (diff) | |
Linux-libre 4.8.6-gnupck-4.8.6-gnu
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/ce.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/ce.c | 7 |
1 files changed, 7 insertions, 0 deletions
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); |