forked from Minki/linux
iwlwifi: allocated rx page accounting cleanup
In iwlwifi, priv->alloc_rxb_page is used to keep track of the Rx pages allocated by the driver. This cleans up the page free routines by introducing __iwl_free_pages/iwl_free_pages so that the accounting is more accurate and less error prone. This also fixes two instances where the counter was not updated. Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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d24deb2580
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@ -1835,8 +1835,7 @@ static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
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rc = -EIO;
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}
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priv->alloc_rxb_page--;
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free_pages(cmd.reply_page, priv->hw_params.rx_page_order);
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iwl_free_pages(priv, cmd.reply_page);
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return rc;
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}
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@ -1353,4 +1353,15 @@ static inline int is_channel_ibss(const struct iwl_channel_info *ch)
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return ((ch->flags & EEPROM_CHANNEL_IBSS)) ? 1 : 0;
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}
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static inline void __iwl_free_pages(struct iwl_priv *priv, struct page *page)
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{
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__free_pages(page, priv->hw_params.rx_page_order);
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priv->alloc_rxb_page--;
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}
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static inline void iwl_free_pages(struct iwl_priv *priv, unsigned long page)
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{
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free_pages(page, priv->hw_params.rx_page_order);
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priv->alloc_rxb_page--;
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}
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#endif /* __iwl_dev_h__ */
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@ -234,7 +234,7 @@ cancel:
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}
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fail:
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if (cmd->reply_page) {
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free_pages(cmd->reply_page, priv->hw_params.rx_page_order);
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iwl_free_pages(priv, cmd->reply_page);
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cmd->reply_page = 0;
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}
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out:
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@ -345,10 +345,8 @@ void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
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pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
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PAGE_SIZE << priv->hw_params.rx_page_order,
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PCI_DMA_FROMDEVICE);
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__free_pages(rxq->pool[i].page,
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priv->hw_params.rx_page_order);
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__iwl_free_pages(priv, rxq->pool[i].page);
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rxq->pool[i].page = NULL;
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priv->alloc_rxb_page--;
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}
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}
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@ -416,9 +414,7 @@ void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
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pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
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PAGE_SIZE << priv->hw_params.rx_page_order,
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PCI_DMA_FROMDEVICE);
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priv->alloc_rxb_page--;
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__free_pages(rxq->pool[i].page,
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priv->hw_params.rx_page_order);
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__iwl_free_pages(priv, rxq->pool[i].page);
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rxq->pool[i].page = NULL;
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}
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list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
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@ -144,8 +144,7 @@ static int iwl_send_scan_abort(struct iwl_priv *priv)
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clear_bit(STATUS_SCAN_HW, &priv->status);
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}
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priv->alloc_rxb_page--;
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free_pages(cmd.reply_page, priv->hw_params.rx_page_order);
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iwl_free_pages(priv, cmd.reply_page);
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return ret;
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}
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@ -164,9 +164,7 @@ int iwl_send_add_sta(struct iwl_priv *priv,
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break;
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}
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}
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priv->alloc_rxb_page--;
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free_pages(cmd.reply_page, priv->hw_params.rx_page_order);
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iwl_free_pages(priv, cmd.reply_page);
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return ret;
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}
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@ -391,9 +389,7 @@ static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
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break;
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}
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}
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priv->alloc_rxb_page--;
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free_pages(cmd.reply_page, priv->hw_params.rx_page_order);
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iwl_free_pages(priv, cmd.reply_page);
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return ret;
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}
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@ -812,7 +812,7 @@ static int iwl3945_get_measurement(struct iwl_priv *priv,
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break;
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}
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free_pages(cmd.reply_page, priv->hw_params.rx_page_order);
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iwl_free_pages(priv, cmd.reply_page);
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return rc;
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}
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@ -1198,9 +1198,7 @@ void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
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pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
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PAGE_SIZE << priv->hw_params.rx_page_order,
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PCI_DMA_FROMDEVICE);
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priv->alloc_rxb_page--;
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__free_pages(rxq->pool[i].page,
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priv->hw_params.rx_page_order);
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__iwl_free_pages(priv, rxq->pool[i].page);
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rxq->pool[i].page = NULL;
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}
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list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
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@ -1247,10 +1245,8 @@ static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rx
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pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
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PAGE_SIZE << priv->hw_params.rx_page_order,
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PCI_DMA_FROMDEVICE);
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__free_pages(rxq->pool[i].page,
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priv->hw_params.rx_page_order);
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__iwl_free_pages(priv, rxq->pool[i].page);
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rxq->pool[i].page = NULL;
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priv->alloc_rxb_page--;
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}
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}
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