Commit ccae0e50 authored by Larry Finger's avatar Larry Finger Committed by David S. Miller
Browse files

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: default avatarLarry Finger <>
Cc: Bastian Bittorf <>
Cc: Stable <>
Signed-off-by: default avatarDavid S. Miller <>
parent b0daa81b
...@@ -169,7 +169,7 @@ struct b43_dmadesc_generic { ...@@ -169,7 +169,7 @@ struct b43_dmadesc_generic {
/* DMA engine tuning knobs */ /* DMA engine tuning knobs */
#define B43_TXRING_SLOTS 256 #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_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) #define B43_DMA0_RX_FW351_BUFSIZE (B43_DMA0_RX_FW351_FO + IEEE80211_MAX_FRAME_LEN)
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment