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iio: ad_sigma_delta: use unsigned long for timeout

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wait_for_completion_timeout returns unsigned long not int so an appropriate
variable is declared and the assignment and check fixed up.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Nicholas Mc Guire 2018-07-23 11:18:38 +02:00 committed by Jonathan Cameron
parent 1b3bd85927
commit cebc4585f6
1 changed files with 3 additions and 2 deletions
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5
drivers/iio/adc/ad_sigma_delta.c
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@ -209,6 +209,7 @@ static int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,
unsigned int mode, unsigned int channel)
{
int ret;
unsigned long timeout;
ret = ad_sigma_delta_set_channel(sigma_delta, channel);
if (ret)
@ -224,8 +225,8 @@ static int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,
sigma_delta->irq_dis = false;
enable_irq(sigma_delta->spi->irq);
ret = wait_for_completion_timeout(&sigma_delta->completion, 2*HZ);
if (ret == 0) {
timeout = wait_for_completion_timeout(&sigma_delta->completion, 2 * HZ);
if (timeout == 0) {
sigma_delta->irq_dis = true;
disable_irq_nosync(sigma_delta->spi->irq);
ret = -EIO;