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linux/drivers/spi/spi-loopback-test.c
Vincent Whitchurch b85ad8a54e
 spi: spi-loopback-test: Add test to trigger DMA/PIO mixing 
Add a test where a small and a large transfer in a message hit the same
cache line.  This test currently fails on spi-s3c64xx on in DMA mode
since it ends up mixing DMA and PIO without proper cache maintenance.

Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Link: https://lore.kernel.org/r/20220916113951.228398-2-vincent.whitchurch@axis.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-09-19 15:44:19 +01:00

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