iio:adc:vf610 ensure correct handing of interruption of wait for comp…

…letion Issue highlighted by smatch warning: CHECK drivers/iio/adc/vf610_adc.c drivers/iio/adc/vf610_adc.c:466 vf610_read_raw() warn: unsigned 'ret' is never less than zero. As wait_for_completion_interruptible_timeout can return -ERESTARTSTSYS, if interrupted, ret must be signed. Signed-off-by: Jonathan Cameron <[email protected]> Acked-by: Fugang Duan <[email protected]>
zuai · Mar 2, 2014 · db8fa73 · db8fa73
1 parent bdc8cda
commit db8fa73
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
@@ -447,7 +447,7 @@ static int vf610_read_raw(struct iio_dev *indio_dev,
 {
 	struct vf610_adc *info = iio_priv(indio_dev);
 	unsigned int hc_cfg;
-	unsigned long ret;
+	long ret;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW: