spi: stm32: properly handle 0 byte transfer

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On 0 byte transfer request, return straight from the
xfer function after finalizing the transfer.

Fixes: dcbe0d84df ("spi: add driver for STM32 SPI controller")
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/1612551572-495-2-git-send-email-alain.volmat@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Alain Volmat 2021-02-05 19:59:25 +01:00 • committed by Mark Brown

parent d290da83cb

commit 2269f5a8b1

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drivers/spi/spi-stm32.c

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