From: Hauke Mehrtens Date: Sun, 10 Mar 2013 20:31:07 +0000 (+0000) Subject: mac80211: backport of r35671: b43: Increase number of RX DMA slots X-Git-Tag: attitude_adjustment_12.09~5 X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e5ad4bf1fc9b0b0a19f8e16d519ac8391872beae;p=openwrt%2Fsvn-archive%2Fopenwrt.git mac80211: backport of r35671: b43: Increase number of RX DMA slots Bastian Bittorf reported that some of the silent freezes on a Linksys WRT54G were due to overflow of the RX DMA ring buffer, which was created with 64 slots. That finding reminded me that I was seeing similar crashed on a netbook, which also has a relatively slow processor. After increasing the number of slots to 128, runs on the netbook that previously failed now worked; however, I found that 109 slots had been used in one test. For that reason, the number of slots is being increased to 256. Signed-off-by: Larry Finger SVN-Revision: 35947 --- diff --git a/package/mac80211/patches/840-b43-increase_number_of_rx_dma_slots.patch b/package/mac80211/patches/840-b43-increase_number_of_rx_dma_slots.patch new file mode 100644 index 0000000000..94c6ff2dbb --- /dev/null +++ b/package/mac80211/patches/840-b43-increase_number_of_rx_dma_slots.patch @@ -0,0 +1,11 @@ +--- a/drivers/net/wireless/b43/dma.h ++++ b/drivers/net/wireless/b43/dma.h +@@ -169,7 +169,7 @@ struct b43_dmadesc_generic { + + /* DMA engine tuning knobs */ + #define B43_TXRING_SLOTS 256 +-#define B43_RXRING_SLOTS 64 ++#define B43_RXRING_SLOTS 256 + #define B43_DMA0_RX_FW598_BUFSIZE (B43_DMA0_RX_FW598_FO + IEEE80211_MAX_FRAME_LEN) + #define B43_DMA0_RX_FW351_BUFSIZE (B43_DMA0_RX_FW351_FO + IEEE80211_MAX_FRAME_LEN) +