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由 Shubhrajyoti D 提交于
Currently the prepare/unprepare transfer are called unconditionally. The assumption is that every driver using the spi core queue infrastructure has to populate the prepare and unprepare functions. This encourages drivers to populate empty functions to prevent crashing. This patch prevents the call to prepare/unprepare if not populated. Signed-off-by: NShubhrajyoti D <shubhrajyoti@ti.com> Acked-by: NLinus Walleij <linus.walleij@linaro.org> [grant.likely: fix whitespace defect] Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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