Netgear WN511B

lspci -nnv dump
06:00.0 Network controller [0280]: Broadcom Corporation BCM4321 802.11b/g/n [14e4:4329] (rev 01) Subsystem: Netgear WN511B RangeMax NEXT Wireless Notebook Adapter [1385:7b00] Flags: bus master, fast devsel, latency 64, IRQ 19 Memory at f1d00000 (32-bit, non-prefetchable) [size=16K] Kernel driver in use: b43-pci-bridge

ssb + b43 info dump
[52485.372262] ssb: Found chip with id 0x4321, rev 0x01 and package 0x01 [52485.372286] ssb: Core 0 found: ChipCommon (cc 0x800, rev 0x12, vendor 0x4243) [52485.372304] ssb: Core 1 found: IEEE 802.11 (cc 0x812, rev 0x0B, vendor 0x4243) [52485.372328] ssb: Core 2 found: PCI-E (cc 0x820, rev 0x02, vendor 0x4243) [52485.372339] ssb: Core 3 found: PCI (cc 0x804, rev 0x0D, vendor 0x4243) [52485.372349] ssb: Core 4 found: USB 1.1 Host (cc 0x817, rev 0x04, vendor 0x4243) [52485.428357] b43-phy37: Broadcom 4321 WLAN found (core revision 11) [52485.472187] b43-phy37: Found PHY: Analog 5, Type 4 (N), Revision 1 [52485.496366] ssb: Sonics Silicon Backplane found on PCI device 0000:06:00.0 [52485.496562] ieee80211 phy37: Selected rate control algorithm 'minstrel_ht' [52485.720155] b43-phy37: Loading firmware version 666.2 (2011-02-23 01:15:07) [52485.816896] b43-phy37 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 [52485.816899] b43-phy37 ERROR: This device does not support DMA on your system. It will now be switched to PIO. [52485.816901] b43-phy37: Controller RESET (DMA error) ... [52486.032106] b43-phy37: Loading firmware version 666.2 (2011-02-23 01:15:07) [52486.108190] b43-phy37 warning: Forced PIO by use_pio module parameter. This should not be needed and will result in lower performance. [52486.128908] b43-phy37: Controller restarted [52486.129278] IPv6: ADDRCONF(NETDEV_UP): wlan141: link is not ready