diff options
| author | John W. Linville <linville@tuxdriver.com> | 2012-11-21 12:57:56 -0500 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-11-21 12:57:56 -0500 |
| commit | b3117494772d8f906625905c6e203af745ee3530 (patch) | |
| tree | cc8960455f9e1f18d0939fddd0e96f349613f753 /drivers/net/wireless/iwlwifi/pcie/rx.c | |
| parent | e2ff0498409af6f2023f91aba07b281e5e87ee15 (diff) | |
| parent | 400e020892a9a20eea5d2c9bce8bfb312075c4ba (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
Conflicts:
drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
drivers/net/wireless/iwlwifi/pcie/tx.c
Diffstat (limited to 'drivers/net/wireless/iwlwifi/pcie/rx.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/rx.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/rx.c b/drivers/net/wireless/iwlwifi/pcie/rx.c index 11a93eddc84..32307976956 100644 --- a/drivers/net/wireless/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/iwlwifi/pcie/rx.c @@ -318,6 +318,14 @@ static void iwl_rx_allocate(struct iwl_trans *trans, gfp_t priority) dma_map_page(trans->dev, page, 0, PAGE_SIZE << trans_pcie->rx_page_order, DMA_FROM_DEVICE); + if (dma_mapping_error(trans->dev, rxb->page_dma)) { + rxb->page = NULL; + spin_lock_irqsave(&rxq->lock, flags); + list_add(&rxb->list, &rxq->rx_used); + spin_unlock_irqrestore(&rxq->lock, flags); + __free_pages(page, trans_pcie->rx_page_order); + return; + } /* dma address must be no more than 36 bits */ BUG_ON(rxb->page_dma & ~DMA_BIT_MASK(36)); /* and also 256 byte aligned! */ @@ -489,8 +497,19 @@ static void iwl_rx_handle_rxbuf(struct iwl_trans *trans, dma_map_page(trans->dev, rxb->page, 0, PAGE_SIZE << trans_pcie->rx_page_order, DMA_FROM_DEVICE); - list_add_tail(&rxb->list, &rxq->rx_free); - rxq->free_count++; + if (dma_mapping_error(trans->dev, rxb->page_dma)) { + /* + * free the page(s) as well to not break + * the invariant that the items on the used + * list have no page(s) + */ + __free_pages(rxb->page, trans_pcie->rx_page_order); + rxb->page = NULL; + list_add_tail(&rxb->list, &rxq->rx_used); + } else { + list_add_tail(&rxb->list, &rxq->rx_free); + rxq->free_count++; + } } else list_add_tail(&rxb->list, &rxq->rx_used); spin_unlock_irqrestore(&rxq->lock, flags); |