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| author | Christian Lamparter <chunkeey@web.de> | 2008-09-01 22:48:41 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-09-05 16:17:47 -0400 |
| commit | 4e416a6f49b710bfe162f0cb24bc68c74493d2a0 (patch) | |
| tree | 76e4a5e4a7e1cd65b142d841e5134404f970a99d /drivers/net/wireless/p54/p54pci.c | |
| parent | 0c25970dc1b0d46f2357e7c4b267ab7b93eb7cdd (diff) | |
| download | kernel_samsung_smdk4412-4e416a6f49b710bfe162f0cb24bc68c74493d2a0.zip kernel_samsung_smdk4412-4e416a6f49b710bfe162f0cb24bc68c74493d2a0.tar.gz kernel_samsung_smdk4412-4e416a6f49b710bfe162f0cb24bc68c74493d2a0.tar.bz2 | |
p54: enhance firmware parser to reduce memory waste
This patch greatly reduces one of biggest memory waste in the driver.
The firmware headers provides the right values for extra head-/tailroom
and mtu size which are usually much lower than the old hardcoded ones.
Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/p54/p54pci.c')
| -rw-r--r-- | drivers/net/wireless/p54/p54pci.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/drivers/net/wireless/p54/p54pci.c b/drivers/net/wireless/p54/p54pci.c index a0395af..fdfc718 100644 --- a/drivers/net/wireless/p54/p54pci.c +++ b/drivers/net/wireless/p54/p54pci.c @@ -81,7 +81,11 @@ static int p54p_upload_firmware(struct ieee80211_hw *dev) return err; } - p54_parse_firmware(dev, fw_entry); + err = p54_parse_firmware(dev, fw_entry); + if (err) { + release_firmware(fw_entry); + return err; + } data = (__le32 *) fw_entry->data; remains = fw_entry->size; @@ -258,17 +262,17 @@ static void p54p_refill_rx_ring(struct ieee80211_hw *dev, if (!desc->host_addr) { struct sk_buff *skb; dma_addr_t mapping; - skb = dev_alloc_skb(MAX_RX_SIZE); + skb = dev_alloc_skb(priv->common.rx_mtu + 32); if (!skb) break; mapping = pci_map_single(priv->pdev, skb_tail_pointer(skb), - MAX_RX_SIZE, + priv->common.rx_mtu + 32, PCI_DMA_FROMDEVICE); desc->host_addr = cpu_to_le32(mapping); desc->device_addr = 0; // FIXME: necessary? - desc->len = cpu_to_le16(MAX_RX_SIZE); + desc->len = cpu_to_le16(priv->common.rx_mtu + 32); desc->flags = 0; rx_buf[i] = skb; } @@ -311,12 +315,13 @@ static void p54p_check_rx_ring(struct ieee80211_hw *dev, u32 *index, if (p54_rx(dev, skb)) { pci_unmap_single(priv->pdev, le32_to_cpu(desc->host_addr), - MAX_RX_SIZE, PCI_DMA_FROMDEVICE); + priv->common.rx_mtu + 32, + PCI_DMA_FROMDEVICE); rx_buf[i] = NULL; desc->host_addr = 0; } else { skb_trim(skb, 0); - desc->len = cpu_to_le16(MAX_RX_SIZE); + desc->len = cpu_to_le16(priv->common.rx_mtu + 32); } i++; @@ -534,7 +539,8 @@ static void p54p_stop(struct ieee80211_hw *dev) if (desc->host_addr) pci_unmap_single(priv->pdev, le32_to_cpu(desc->host_addr), - MAX_RX_SIZE, PCI_DMA_FROMDEVICE); + priv->common.rx_mtu + 32, + PCI_DMA_FROMDEVICE); kfree_skb(priv->rx_buf_data[i]); priv->rx_buf_data[i] = NULL; } @@ -544,7 +550,8 @@ static void p54p_stop(struct ieee80211_hw *dev) if (desc->host_addr) pci_unmap_single(priv->pdev, le32_to_cpu(desc->host_addr), - MAX_RX_SIZE, PCI_DMA_FROMDEVICE); + priv->common.rx_mtu + 32, + PCI_DMA_FROMDEVICE); kfree_skb(priv->rx_buf_mgmt[i]); priv->rx_buf_mgmt[i] = NULL; } |