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![Krzysztof Kozlowski](https://secure.gravatar.com/avatar/ec27cf942cf9839d40db2b252dd3e0f0.jpg?s=96&d=mm)
Krzysztof Kozlowski committed cb280101705
spi: spi-fsl-dspi: Fix lockup if device is shutdown during SPI transfer [ Upstream commit 3c525b69e8c1a9a6944e976603c7a1a713e728f9 ] During shutdown, the driver should unregister the SPI controller and stop the hardware. Otherwise the dspi_transfer_one_message() could wait on completion infinitely. Additionally, calling spi_unregister_controller() first in device shutdown reverse-matches the probe function, where SPI controller is registered at the end. Fixes: dc234825997e ("spi: spi-fsl-dspi: Adding shutdown hook") Reported-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200622110543.5035-2-krzk@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>