spi: stm32: make spurious and overrun interrupts visible

We do not expect to receive spurious interrupts so rise a warning
if it happens.

RX overrun is an error condition that signals a corrupted RX
stream both in dma and in irq modes. Report the error and
abort the transfer in either cases.

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/1612551572-495-9-git-send-email-alain.volmat@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Alain Volmat 2021-02-05 19:59:32 +01:00 • committed by Mark Brown
commit c64e7efe46
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