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rtlwifi: Use order 2 RX buffer allocation only if necessary

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Although a previous fix handles the kernel panics that result from
failure to allocate a new RX buffer, memory fragmentation can be
reduced if the amsdu_8k capability is disabled as new buffers need only
be of O(0), not O(2).

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger 2011-05-19 11:48:45 -05:00 committed by John W. Linville
parent a9e1286975
commit 0019a2c927
1 changed files with 7 additions and 0 deletions
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7
drivers/net/wireless/rtlwifi/pci.c
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@ -1115,6 +1115,13 @@ static int _rtl_pci_init_rx_ring(struct ieee80211_hw *hw)
rtlpci->rx_ring[rx_queue_idx].idx = 0;
/* If amsdu_8k is disabled, set buffersize to 4096. This
* change will reduce memory fragmentation.
*/
if (rtlpci->rxbuffersize > 4096 &&
rtlpriv->rtlhal.disable_amsdu_8k)
rtlpci->rxbuffersize = 4096;
for (i = 0; i < rtlpci->rxringcount; i++) {
struct sk_buff *skb =
dev_alloc_skb(rtlpci->rxbuffersize);