From a40d3e420d50156b7a43e66d5f5b40c444ebc5da Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Sun, 1 Sep 2013 10:02:00 +0300 Subject: [PATCH] ath10k: clean up ath10k_ce_completed_send_next_nolock() The error handling was just weird, simplify it. Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/ce.c | 41 ++++++++++++++-------------- 1 file changed, 21 insertions(+), 20 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c index dd80c24582f3..6a8014219423 100644 --- a/drivers/net/wireless/ath/ath10k/ce.c +++ b/drivers/net/wireless/ath/ath10k/ce.c @@ -594,8 +594,8 @@ static int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state, struct ath10k *ar = ce_state->ar; unsigned int nentries_mask = src_ring->nentries_mask; unsigned int sw_index = src_ring->sw_index; + struct ce_desc *sdesc, *sbase; unsigned int read_index; - int ret = -EIO; if (src_ring->hw_index == sw_index) { /* @@ -611,32 +611,33 @@ static int ath10k_ce_completed_send_next_nolock(struct ath10k_ce_pipe *ce_state, src_ring->hw_index &= nentries_mask; ath10k_pci_sleep(ar); } + read_index = src_ring->hw_index; - if ((read_index != sw_index) && (read_index != 0xffffffff)) { - struct ce_desc *sbase = src_ring->shadow_base; - struct ce_desc *sdesc = CE_SRC_RING_TO_DESC(sbase, sw_index); + if ((read_index == sw_index) || (read_index == 0xffffffff)) + return -EIO; - /* Return data from completed source descriptor */ - *bufferp = __le32_to_cpu(sdesc->addr); - *nbytesp = __le16_to_cpu(sdesc->nbytes); - *transfer_idp = MS(__le16_to_cpu(sdesc->flags), - CE_DESC_FLAGS_META_DATA); + sbase = src_ring->shadow_base; + sdesc = CE_SRC_RING_TO_DESC(sbase, sw_index); - if (per_transfer_contextp) - *per_transfer_contextp = - src_ring->per_transfer_context[sw_index]; + /* Return data from completed source descriptor */ + *bufferp = __le32_to_cpu(sdesc->addr); + *nbytesp = __le16_to_cpu(sdesc->nbytes); + *transfer_idp = MS(__le16_to_cpu(sdesc->flags), + CE_DESC_FLAGS_META_DATA); - /* sanity */ - src_ring->per_transfer_context[sw_index] = NULL; + if (per_transfer_contextp) + *per_transfer_contextp = + src_ring->per_transfer_context[sw_index]; - /* Update sw_index */ - sw_index = CE_RING_IDX_INCR(nentries_mask, sw_index); - src_ring->sw_index = sw_index; - ret = 0; - } + /* sanity */ + src_ring->per_transfer_context[sw_index] = NULL; - return ret; + /* Update sw_index */ + sw_index = CE_RING_IDX_INCR(nentries_mask, sw_index); + src_ring->sw_index = sw_index; + + return 0; } /* NB: Modeled after ath10k_ce_completed_send_next */ -- 2.30.2