From b45ae32bd027d7b7a65cc50ce5484446077f2648 Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@metafoo.de>
Date: Wed, 17 Jul 2013 15:44:00 +0100
Subject: staging:iio:adis16260: Use sign_extend32() instead of open-coding it

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

diff --git a/drivers/staging/iio/gyro/adis16260_core.c b/drivers/staging/iio/gyro/adis16260_core.c
index 55e6795..f060452 100644
--- a/drivers/staging/iio/gyro/adis16260_core.c
+++ b/drivers/staging/iio/gyro/adis16260_core.c
@@ -277,9 +277,7 @@ static int adis16260_read_raw(struct iio_dev *indio_dev,
 			mutex_unlock(&indio_dev->mlock);
 			return ret;
 		}
-		val16 &= (1 << bits) - 1;
-		val16 = (s16)(val16 << (16 - bits)) >> (16 - bits);
-		*val = val16;
+		*val = sign_extend32(val16, bits - 1);
 		mutex_unlock(&indio_dev->mlock);
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_CALIBSCALE:
-- 
cgit v0.10.2