linux-kernel - [PATCH 1/4] iio: code: mark iio_dev as const in iio_buffer

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Message-ID: <20250306-iio-driver-ad4052-v1-1-2badad30116c@analog.com>
Date: Thu, 6 Mar 2025 15:03:14 +0100
From: Jorge Marques <jorge.marques@...log.com>
To: Jonathan Cameron <jic23@...nel.org>, Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>, Jonathan Corbet <corbet@....net>,
        David Lechner
	<dlechner@...libre.com>
CC: <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        Jorge Marques
	<jorge.marques@...log.com>
Subject: [PATCH 1/4] iio: code: mark iio_dev as const in iio_buffer_enabled

The iio_dev struct is never modified inside the method, mark it as
const.
This allows to be called from get_current_scan_type, and is useful
when the scan_type depends on the buffer state.

Signed-off-by: Jorge Marques <jorge.marques@...log.com>
---
 drivers/iio/industrialio-core.c | 2 +-
 include/linux/iio/iio.h         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index b9f4113ae5fc3ee1ef76be6808cc437286690dae..a727278752676fcc9e2c5a9b5358092b44c6fff0 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -211,7 +211,7 @@ EXPORT_SYMBOL_GPL(iio_device_id);
  *
  * Returns: True, if the buffer is enabled.
  */
-bool iio_buffer_enabled(struct iio_dev *indio_dev)
+bool iio_buffer_enabled(const struct iio_dev *indio_dev)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 07a0e8132e88278c82be740e12ca2d9078710206..33612df92779d8ac380a66340e0e76eeb7e2cd5d 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -629,7 +629,7 @@ struct iio_dev {
 
 int iio_device_id(struct iio_dev *indio_dev);
 int iio_device_get_current_mode(struct iio_dev *indio_dev);
-bool iio_buffer_enabled(struct iio_dev *indio_dev);
+bool iio_buffer_enabled(const struct iio_dev *indio_dev);
 
 const struct iio_chan_spec
 *iio_find_channel_from_si(struct iio_dev *indio_dev, int si);

-- 
2.48.1