Commit bd6857a0 authored Jan 21, 2014 by Geert Uytterhoeven Committed by Mark Brown Jan 21, 2014

spi: Correct set_cs() documentation



The documentation for spi_master.set_cs() says:

    assert or deassert chip select, true to assert

i.e. its "enable" parameter uses assertion-level logic.

This does not match the implementation of spi_set_cs(), which calls
spi_master.set_cs() with the wanted logic level of the chip select line,
which depends on the polarity of the chip select signal.

Correct the documentation to match the implementation.

Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

parent 0516712c

include/linux/spi/spi.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -277,7 +277,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
		* @unprepare_transfer_hardware: there are currently no more messages on the
		* queue so the subsystem notifies the driver that it may relax the
		* hardware by issuing this call
		* @set_cs: assert or deassert chip select, true to assert. May be called
		* @set_cs: set the logic level of the chip select line. May be called
		* from interrupt context.
		* @prepare_message: set up the controller to transfer a single message,
		* for example doing DMA mapping. Called from threaded

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