From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out-046.synserver.de ([212.40.185.46]:1065 "EHLO smtp-out-044.synserver.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756438Ab2EUITA (ORCPT ); Mon, 21 May 2012 04:19:00 -0400 From: Lars-Peter Clausen To: Jonathan Cameron Cc: linux-iio@vger.kernel.org, Lars-Peter Clausen Subject: [PATCH 1/2] iio: Add iio_device_get() Date: Mon, 21 May 2012 10:21:53 +0200 Message-Id: <1337588514-23938-1-git-send-email-lars@metafoo.de> Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org This patch add the iio_device_get() function, which increases the reference count of a iio device. The matching function to decrease the reference count - iio_device_put() - already exists. Signed-off-by: Lars-Peter Clausen --- include/linux/iio/iio.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 3a4f6a3..3238fa3 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -438,6 +438,17 @@ static inline struct iio_dev *dev_to_iio_dev(struct device *dev) return container_of(dev, struct iio_dev, dev); } +/** + * iio_device_get() - increment reference count for the device + * @indio_dev: IIO device structure + * + * Returns: The passed IIO device + **/ +static inline struct iio_dev *iio_device_get(struct iio_dev *indio_dev) +{ + return indio_dev ? dev_to_iio_dev(get_device(&indio_dev->dev)) : NULL; +} + /* Can we make this smaller? */ #define IIO_ALIGN L1_CACHE_BYTES /** -- 1.7.10