spi: mediatek: fix fifo rx mode

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In FIFO mode were two problems:
- RX mode was never handled and
- in this case the tx_buf pointer was NULL and caused an exception

fix this by handling RX mode in mtk_spi_fifo_transfer

Fixes: a568231f46 ("spi: mediatek: Add spi bus for Mediatek MT8173")
Signed-off-by: Peter Hess <peter.hess@ph-home.de>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Link: https://lore.kernel.org/r/20210706121609.680534-1-linux@fw-web.de
Signed-off-by: Mark Brown <broonie@kernel.org>

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Peter Hess 2021-07-06 14:16:09 +02:00 • committed by Mark Brown

parent 69e1818ad2

commit 3a70dd2d05

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1 changed files with 13 additions and 3 deletions

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drivers/spi/spi-mt65xx.c

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