@@ -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;
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> --- found by experimental coccinelle script As the timeout returned is always << INT_MAX there is no side-effect with the type conversion here, never the less proper types should be used. Patch was compile tested with: x86_64_defconfig + CONFIG_SPI=y, CONFIG_IIO=y, CONFIG_AD7793=y (implies CONFIG_AD_SIGMA_DELTA=y) Patch is against 4.18-rc5 (localversion-next is next-20180720) drivers/iio/adc/ad_sigma_delta.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)