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由 Ezequiel Garcia 提交于
The GPIO chip in use could be of any kind, and therefore might sleep when accesing the GPIO lines. Take account of this by using cansleep instead, which is the most generic case. Signed-off-by: NEzequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: NMark Brown <broonie@linaro.org>
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