spi: Correction to typos in Documentation/spi/spi-summary

  - It may also be used to stream data in either direction (half duplex),

    or both of them at the same time (full duplex).

  - Some devices may use eight bit words.  Others may different word

  - Some devices may use eight bit words.  Others may use different word

    lengths, such as streams of 12-bit or 20-bit digital samples.

  - Words are usually sent with their most significant bit (MSB) first,

a slave, and the slave can tell the chosen polarity by sampling the

clock level when its select line goes active.  That's why many devices

support for example both modes 0 and 3:  they don't care about polarity,

and alway clock data in/out on rising clock edges.

and always clock data in/out on rising clock edges.

How do these driver programming interfaces work?

    DEPRECATED METHODS

    master->transfer(struct spi_device *spi, struct spi_message *message)

	This must not sleep. Its responsibility is arrange that the

	This must not sleep. Its responsibility is to arrange that the

	transfer happens and its complete() callback is issued. The two

	will normally happen later, after other transfers complete, and

	if the controller is idle it will need to be kickstarted. This