The timeout value to wait_for_completion_timeout is in jiffies but the value being passed seems like it was intended to by microseconds Note that the timeout was extremely long thus it might be too short now. In any case it probably should be passed through usecs_to_jiffies() or msecs_to_jiffies() patch is against linux-next 3.19.0-rc1 -next-20141226 patch was only compile-tested x86_64_defcofnig + CONFIG_SPMI=m CONFIG_IIO=m, CONFIG_QCOM_SPMI_IADC=m Signed-off-by: Nicholas Mc Guire <der.herr@xxxxxxx> --- drivers/iio/adc/qcom-spmi-iadc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/qcom-spmi-iadc.c b/drivers/iio/adc/qcom-spmi-iadc.c index b9666f2..3080562 100644 --- a/drivers/iio/adc/qcom-spmi-iadc.c +++ b/drivers/iio/adc/qcom-spmi-iadc.c @@ -296,7 +296,8 @@ static int iadc_do_conversion(struct iadc_chip *iadc, int chan, u16 *data) if (iadc->poll_eoc) { ret = iadc_poll_wait_eoc(iadc, wait); } else { - ret = wait_for_completion_timeout(&iadc->complete, wait); + ret = wait_for_completion_timeout(&iadc->complete, + usecs_to_jiffies(wait)); if (!ret) ret = -ETIMEDOUT; else -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html