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| author | Larry Finger <Larry.Finger@lwfinger.net> | 2013-02-17 17:01:20 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-19 00:51:08 -0500 |
| commit | ccae0e50c16a7f7adb029c169147400d1ce9f703 (patch) | |
| tree | feb33adf1bd1373388b0f32db7987fd4b75437b9 | |
| parent | b0daa81b6a797bc5f2c97b061467a4fb0a4b2e43 (diff) | |
| download | lwn-ccae0e50c16a7f7adb029c169147400d1ce9f703.tar.gz lwn-ccae0e50c16a7f7adb029c169147400d1ce9f703.zip | |
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 <Larry.Finger@lwfinger.net>
Cc: Bastian Bittorf <bittorf@bluebottle.com>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/wireless/b43/dma.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/b43/dma.h b/drivers/net/wireless/b43/dma.h index 315b96ed1d90..9fdd1983079c 100644 --- 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) |