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由 Haavard Skinnemoen 提交于
Funny things may happen if we stop the USART clock before the shifter is empty. Prevent this from happening by waiting until the shifter is completely drained before allowing suspend to continue. Signed-off-by: NHaavard Skinnemoen <haavard.skinnemoen@atmel.com> Cc: Andrew Victor <linux@maxim.org.za>
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