[PATCH v2] iio: adc: ad7192: replace usleep_range() with fsleep()

[Stepan Ionichev <sozdayvek@gmail.com>]

The "at least 500us" wait after serial interface reset has no
specific upper bound. fsleep(500) expands to the same
usleep_range(500, 1000) internally.

Drop the trailing "/* Wait for at least 500us */" comment which
just restated the previous arguments.

No functional change.

Signed-off-by: Stepan Ionichev <sozdayvek@gmail.com>
---
 drivers/iio/adc/ad7192.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c
index 8b1664f6b..6bd9cdaa6 100644
--- a/drivers/iio/adc/ad7192.c
+++ b/drivers/iio/adc/ad7192.c
@@ -576,7 +576,7 @@ static int ad7192_setup(struct iio_dev *indio_dev, struct device *dev)
 	ret = ad_sd_reset(&st->sd);
 	if (ret < 0)
 		return ret;
-	usleep_range(500, 1000); /* Wait for at least 500us */
+	fsleep(500);
 
 	/* write/read test for device presence */
 	ret = ad_sd_read_reg(&st->sd, AD7192_REG_ID, 1, &id);
-- 
2.43.0