spi: fsl-lpspi: use wait_for_completion_timeout() while waiting transfer done
It's a potential problem to use wait_for_completion() because the completion condition may never come. Thus, it's better to repalce wait_for_completion() with wait_for_completion_timeout(). Signed-off-by: NGao Pan <pandy.gao@nxp.com> Signed-off-by: NMark Brown <broonie@kernel.org>
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