From: Larry Finger Date: Sun, 17 Feb 2013 17:01:20 +0000 (+0000) Subject: b43: Increase number of RX DMA slots X-Git-Tag: v3.2.40~78 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c6f8eab7b3f687d2642e2c6e99da46d9dcef3927;p=pandora-kernel.git b43: Increase number of RX DMA slots commit ccae0e50c16a7f7adb029c169147400d1ce9f703 upstream. 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 Cc: Bastian Bittorf Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings --- 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)