From 3e4334f2d6f3025e396a710f758fd1663c104976 Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@metafoo.de>
Date: Wed, 21 Nov 2012 16:27:00 +0000
Subject: staging:iio:ad7793: Use usleep_range instead of msleep

It is recommended to use usleep_range instead of msleep for durations smaller
than a 20ms.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/staging/iio/adc/ad7793.c b/drivers/staging/iio/adc/ad7793.c
index bd1358e..55d302d 100644
--- a/drivers/staging/iio/adc/ad7793.c
+++ b/drivers/staging/iio/adc/ad7793.c
@@ -122,7 +122,7 @@ static int ad7793_setup(struct iio_dev *indio_dev,
 	ret = spi_write(st->sd.spi, (u8 *)&ret, sizeof(ret));
 	if (ret < 0)
 		goto out;
-	msleep(1); /* Wait for at least 500us */
+	usleep_range(500, 2000); /* Wait for at least 500us */
 
 	/* write/read test for device presence */
 	ret = ad_sd_read_reg(&st->sd, AD7793_REG_ID, 1, &id);
-- 
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