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CONFIG_B43LEGACY_PIO_MODE: PIO (Programmed I/O) only

General informations

The Linux kernel configuration item CONFIG_B43LEGACY_PIO_MODE has multiple definitions:

PIO (Programmed I/O) only found in drivers/net/wireless/b43legacy/Kconfig

The configuration item CONFIG_B43LEGACY_PIO_MODE:

Help text

Only include Programmed I/O (PIO). This reduces the size of the driver module, by omitting the DMA code. Please note that PIO transfers are slow (compared to DMA).

Also note that not all devices of the b43legacy series support PIO.

You should use PIO only if DMA does not work for you.

PIO (Programmed I/O) only found in drivers/net/wireless/broadcom/b43legacy/Kconfig

The configuration item CONFIG_B43LEGACY_PIO_MODE:

Help text

Only include Programmed I/O (PIO). This reduces the size of the driver module, by omitting the DMA code. Please note that PIO transfers are slow (compared to DMA).

Also note that not all devices of the b43legacy series support PIO.

You should use PIO only if DMA does not work for you.

Hardware

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