kernelconfig_penguin
default or selected kernelversion does not have config value CONFIG_B43_FORCE_PIO.
Result is shown for kernelversion 3.1.9

Force usage of PIO instead of DMA

configname: CONFIG_B43_FORCE_PIO

Linux Kernel Configuration
└─> Device Drivers
└─> Network device support
└─> Wireless LAN
└─> Force usage of PIO instead of DMA

This will disable DMA and always enable PIO instead.

Say N!
This is only for debugging the PIO engine code. You do
_NOT_ want to enable this.