spi: bcm2835: Tear down DMA before turning off SPI controller

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On unbind of the BCM2835 SPI driver, the SPI controller is disabled
first and the DMA channels are terminated and torn down afterwards.

This seems backwards:  In the theoretical case that DMA is active,
it might try to fill the SPI FIFOs even after the controller has
been disabled.

Reverse the order, thereby mirroring what's done on ->probe().

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: https://lore.kernel.org/r/ac79f1e3d6fd9a1f5e0cb4008c43b98ea70be3c2.1589557526.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@kernel.org>

...

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Lukas Wunner 2020-05-15 17:58:04 +02:00 • committed by Mark Brown

parent c38a4905ca

commit 05897c710e

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drivers/spi/spi-bcm2835.c

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