spi: sirf: fix spi full-duplex DMA transferring issue

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sometimes t->tx can be equal with t->rx. for example, spidev will make
tx and rx point to spidev->buffer at the same time. currently, for this
case, we map the buffer BIDIRECTION to fix the cache consistency.

Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

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Qipan Li 2014-04-14 14:30:01 +08:00 • committed by Mark Brown

parent d77ec5df47

commit bf83fd6402

1 changed files with 5 additions and 2 deletions

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7

drivers/spi/spi-sirf.c

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