spi: stm32: fix fifo threshold level in case of short transfer

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When transfer is shorter than half of the fifo, set the data packet size
up to transfer size instead of up to half of the fifo.
Check also that threshold is set at least to 1 data frame.

Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Alain Volmat <alain.volmat@st.com>
Link: https://lore.kernel.org/r/1597043558-29668-3-git-send-email-alain.volmat@st.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Amelie Delaunay 2020-08-10 09:12:35 +02:00 • committed by Mark Brown

parent 135dd873d3

commit 3373e9004a

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1 changed files with 18 additions and 8 deletions

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drivers/spi/spi-stm32.c

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