diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c index 6495945637b9..68e89be60bef 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c @@ -367,8 +367,6 @@ void iwl_bg_rx_replenish(struct work_struct *data) */ static void iwl_rx_handle(struct iwl_trans *trans) { - struct iwl_rx_mem_buffer *rxb; - struct iwl_rx_packet *pkt; struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); struct iwl_rx_queue *rxq = &trans_pcie->rxq; @@ -402,6 +400,9 @@ static void iwl_rx_handle(struct iwl_trans *trans) while (i != r) { int len, err; u16 sequence; + struct iwl_rx_mem_buffer *rxb; + struct iwl_rx_cmd_buffer rxcb; + struct iwl_rx_packet *pkt; rxb = rxq->queue[i]; @@ -418,7 +419,9 @@ static void iwl_rx_handle(struct iwl_trans *trans) dma_unmap_page(trans->dev, rxb->page_dma, PAGE_SIZE << hw_params(trans).rx_page_order, DMA_FROM_DEVICE); - pkt = rxb_addr(rxb); + + rxcb._page = rxb->page; + pkt = rxb_addr(&rxcb); IWL_DEBUG_RX(trans, "r = %d, i = %d, %s, 0x%02x\n", r, i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); @@ -461,10 +464,10 @@ static void iwl_rx_handle(struct iwl_trans *trans) "reclaim is false, SEQ_RX_FRAME unset: %s\n", get_cmd_string(pkt->hdr.cmd)); - err = iwl_op_mode_rx(trans->op_mode, rxb, cmd); + err = iwl_op_mode_rx(trans->op_mode, &rxcb, cmd); /* - * XXX: After here, we should always check rxb->page + * XXX: After here, we should always check rxcb._page * against NULL before touching it or its virtual * memory (pkt). Because some rx_handler might have * already taken or freed the pages. @@ -475,12 +478,16 @@ static void iwl_rx_handle(struct iwl_trans *trans) * and fire off the (possibly) blocking * iwl_trans_send_cmd() * as we reclaim the driver command queue */ - if (rxb->page) - iwl_tx_cmd_complete(trans, rxb, err); + if (rxcb._page) + iwl_tx_cmd_complete(trans, &rxcb, err); else IWL_WARN(trans, "Claim null rxb?\n"); } + /* page was stolen from us */ + if (rxcb._page == NULL) + rxb->page = NULL; + /* Reuse the page if possible. For notification packets and * SKBs that fail to Rx correctly, add them back into the * rx_free list for reuse later. */ |
