linux-kernel - [PATCH v2 2/5] iio: code: mark iio_dev as const in iio_buffer

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Message-ID: <20250422-iio-driver-ad4052-v2-2-638af47e9eb3@analog.com>
Date: Tue, 22 Apr 2025 13:34:47 +0200
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>,
        Nuno Sá <nuno.sa@...log.com>,
        Andy
 Shevchenko <andy@...nel.org>,
        Uwe Kleine-König
	<ukleinek@...nel.org>
CC: <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <linux-pwm@...r.kernel.org>, Jorge Marques <jorge.marques@...log.com>
Subject: [PATCH v2 2/5] 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 178e99b111debc59a247fcc3a6037e429db3bebf..bc6a2ac6415eccf201e148ea98c0b5982787eb6d 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -212,7 +212,7 @@ 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 638cf2420fbd85cf2924d09d061df601d1d4bb2a..88569e1a888bde4d2bfb5b9f030096af1c15d68d 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);

-- 
2.49.0