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Date: Sun, 17 Feb 2013 21:01:20 -0600 From: Larry Finger <Larry.Finger@...inger.net> To: linville@...driver.com Cc: linux-wireless@...r.kernel.org, Larry Finger <Larry.Finger@...inger.net>, netdev@...r.kernel.org, Bastian Bittorf <bittorf@...ebottle.com>, Stable <stable@...r.kernel.org> Subject: [PATCH] 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@...inger.net> Cc: Bastian Bittorf <bittorf@...ebottle.com> Cc: Stable <stable@...r.kernel.org> --- --- drivers/net/wireless/b43/dma.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/b43/dma.h b/drivers/net/wireless/b43/dma.h index 315b96e..9fdd198 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) -- 1.8.1.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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