linux-kernel - [PATCH v4 3/7] iio: core,buffer: wrap iio_buffer_put() call into iio_buffers

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Message-ID: <20200424045642.4903-4-alexandru.ardelean@analog.com>
Date:   Fri, 24 Apr 2020 07:56:38 +0300
From:   Alexandru Ardelean <alexandru.ardelean@...log.com>
To:     <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <lars@...afoo.de>, <jic23@...nel.org>, <pmeerw@...erw.net>,
        Alexandru Ardelean <alexandru.ardelean@...log.com>
Subject: [PATCH v4 3/7] iio: core,buffer: wrap iio_buffer_put() call into iio_buffers_put()

The name (and the wrapper) seems superfluous now, but when more buffers
will be attached to the IIO device this will be a bit more useful.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@...log.com>
---
 drivers/iio/iio_core.h            |  4 ++++
 drivers/iio/industrialio-buffer.c | 10 ++++++++++
 drivers/iio/industrialio-core.c   |  2 +-
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h
index fd9a5f1d5e51..39ec0344fb68 100644
--- a/drivers/iio/iio_core.h
+++ b/drivers/iio/iio_core.h
@@ -51,6 +51,8 @@ void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev);
 #define iio_buffer_poll_addr (&iio_buffer_poll)
 #define iio_buffer_read_outer_addr (&iio_buffer_read_outer)
 
+void iio_device_buffers_put(struct iio_dev *indio_dev);
+
 void iio_disable_all_buffers(struct iio_dev *indio_dev);
 void iio_buffer_wakeup_poll(struct iio_dev *indio_dev);
 
@@ -66,6 +68,8 @@ static inline int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
 
 static inline void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev) {}
 
+static inline void iio_device_buffers_put(struct iio_dev *indio_dev) {}
+
 static inline void iio_disable_all_buffers(struct iio_dev *indio_dev) {}
 static inline void iio_buffer_wakeup_poll(struct iio_dev *indio_dev) {}
 
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index 68c276edb071..bcf5f561c4b5 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -1336,6 +1336,16 @@ void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev)
 	iio_free_chan_devattr_list(&indio_dev->buffer->scan_el_dev_attr_list);
 }
 
+void iio_device_buffers_put(struct iio_dev *indio_dev)
+{
+	struct iio_buffer *buffer = indio_dev->buffer;
+
+	if (!buffer)
+		return;
+
+	iio_buffer_put(buffer);
+}
+
 /**
  * iio_validate_scan_mask_onehot() - Validates that exactly one channel is selected
  * @indio_dev: the iio device
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 3c97090c2ab9..bac865ff673e 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -1475,7 +1475,7 @@ static void iio_dev_release(struct device *device)
 	iio_device_unregister_eventset(indio_dev);
 	iio_device_unregister_sysfs(indio_dev);
 
-	iio_buffer_put(indio_dev->buffer);
+	iio_device_buffers_put(indio_dev);
 
 	ida_simple_remove(&iio_ida, indio_dev->id);
 	kfree(indio_dev);
-- 
2.17.1