spi: mxs: cleanup wait_for_completion return handling
return type of wait_for_completion_timeout is unsigned long not int, this patch uses the return value of wait_for_completion_timeout in the condition directly rather than adding a additional appropriately typed variable. Signed-off-by: NNicholas Mc Guire <hofrat@osadl.org> Signed-off-by: NMark Brown <broonie@kernel.org>
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