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[ Upstream commit c45c1e8 ] The bcm2835_spi_transfer_one function can create a deadlock if it is called while another thread already has the CCF lock. Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com> Fixes: f804387 ("spi: add driver for BCM2835") Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20210716210245.13240-2-alexandru.tachici@analog.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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