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path: root/drivers/iio/adc/stmpe-adc.c
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Diffstat (limited to 'drivers/iio/adc/stmpe-adc.c')
-rw-r--r--drivers/iio/adc/stmpe-adc.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/iio/adc/stmpe-adc.c b/drivers/iio/adc/stmpe-adc.c
index bd72727fc417..35ae801c4d35 100644
--- a/drivers/iio/adc/stmpe-adc.c
+++ b/drivers/iio/adc/stmpe-adc.c
@@ -61,7 +61,7 @@ struct stmpe_adc {
static int stmpe_read_voltage(struct stmpe_adc *info,
struct iio_chan_spec const *chan, int *val)
{
- long ret;
+ unsigned long ret;
mutex_lock(&info->lock);
@@ -79,7 +79,7 @@ static int stmpe_read_voltage(struct stmpe_adc *info,
ret = wait_for_completion_timeout(&info->completion, STMPE_ADC_TIMEOUT);
- if (ret <= 0) {
+ if (ret == 0) {
stmpe_reg_write(info->stmpe, STMPE_REG_ADC_INT_STA,
STMPE_ADC_CH(info->channel));
mutex_unlock(&info->lock);
@@ -96,7 +96,7 @@ static int stmpe_read_voltage(struct stmpe_adc *info,
static int stmpe_read_temp(struct stmpe_adc *info,
struct iio_chan_spec const *chan, int *val)
{
- long ret;
+ unsigned long ret;
mutex_lock(&info->lock);
@@ -114,7 +114,7 @@ static int stmpe_read_temp(struct stmpe_adc *info,
ret = wait_for_completion_timeout(&info->completion, STMPE_ADC_TIMEOUT);
- if (ret <= 0) {
+ if (ret == 0) {
mutex_unlock(&info->lock);
return -ETIMEDOUT;
}