From 8a052fbecc74ff0926ede36ce660bd7b1fdcf770 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sun, 10 Mar 2013 20:31:07 +0000 Subject: [PATCH] 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 --- .../840-b43-increase_number_of_rx_dma_slots.patch | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 package/mac80211/patches/840-b43-increase_number_of_rx_dma_slots.patch 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) + -- 2.30.2