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From: Alexandru Ardelean <alexandru.ardelean@analog.com>
To: <linux-kernel@vger.kernel.org>, <linux-iio@vger.kernel.org>
Cc: <lars@metafoo.de>, <Michael.Hennerich@analog.com>,
	<jic23@kernel.org>, <nuno.sa@analog.com>,
	<dragos.bogdan@analog.com>,
	Alexandru Ardelean <alexandru.ardelean@analog.com>
Subject: [PATCH v4 3/6] iio: buffer-dma: split iio_dma_buffer_fileio_free() function
Date: Wed, 17 Feb 2021 09:36:35 +0200	[thread overview]
Message-ID: <20210217073638.21681-4-alexandru.ardelean@analog.com> (raw)
In-Reply-To: <20210217073638.21681-1-alexandru.ardelean@analog.com>

A part of the logic in the iio_dma_buffer_exit() is required for the change
to add mmap support to IIO buffers.
This change splits the logic into a separate function, which will be
re-used later.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
---
 drivers/iio/buffer/industrialio-buffer-dma.c | 45 +++++++++++---------
 1 file changed, 25 insertions(+), 20 deletions(-)

diff --git a/drivers/iio/buffer/industrialio-buffer-dma.c b/drivers/iio/buffer/industrialio-buffer-dma.c
index d348af8b9705..858af7eea53e 100644
--- a/drivers/iio/buffer/industrialio-buffer-dma.c
+++ b/drivers/iio/buffer/industrialio-buffer-dma.c
@@ -356,6 +356,30 @@ int iio_dma_buffer_request_update(struct iio_buffer *buffer)
 }
 EXPORT_SYMBOL_GPL(iio_dma_buffer_request_update);
 
+static void iio_dma_buffer_fileio_free(struct iio_dma_buffer_queue *queue)
+{
+	unsigned int i;
+
+	spin_lock_irq(&queue->list_lock);
+	for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {
+		if (!queue->fileio.blocks[i])
+			continue;
+		queue->fileio.blocks[i]->state = IIO_BLOCK_STATE_DEAD;
+	}
+	INIT_LIST_HEAD(&queue->outgoing);
+	spin_unlock_irq(&queue->list_lock);
+
+	INIT_LIST_HEAD(&queue->incoming);
+
+	for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {
+		if (!queue->fileio.blocks[i])
+			continue;
+		iio_buffer_block_put(queue->fileio.blocks[i]);
+		queue->fileio.blocks[i] = NULL;
+	}
+	queue->fileio.active_block = NULL;
+}
+
 static void iio_dma_buffer_submit_block(struct iio_dma_buffer_queue *queue,
 	struct iio_dma_buffer_block *block)
 {
@@ -635,28 +659,9 @@ EXPORT_SYMBOL_GPL(iio_dma_buffer_init);
  */
 void iio_dma_buffer_exit(struct iio_dma_buffer_queue *queue)
 {
-	unsigned int i;
-
 	mutex_lock(&queue->lock);
 
-	spin_lock_irq(&queue->list_lock);
-	for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {
-		if (!queue->fileio.blocks[i])
-			continue;
-		queue->fileio.blocks[i]->state = IIO_BLOCK_STATE_DEAD;
-	}
-	INIT_LIST_HEAD(&queue->outgoing);
-	spin_unlock_irq(&queue->list_lock);
-
-	INIT_LIST_HEAD(&queue->incoming);
-
-	for (i = 0; i < ARRAY_SIZE(queue->fileio.blocks); i++) {
-		if (!queue->fileio.blocks[i])
-			continue;
-		iio_buffer_block_put(queue->fileio.blocks[i]);
-		queue->fileio.blocks[i] = NULL;
-	}
-	queue->fileio.active_block = NULL;
+	iio_dma_buffer_fileio_free(queue);
 	queue->ops = NULL;
 
 	mutex_unlock(&queue->lock);
-- 
2.17.1


  parent reply	other threads:[~2021-02-17  7:35 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-17  7:36 [PATCH v4 0/6] iio: core: Add mmap interface infrastructure Alexandru Ardelean
2021-02-17  7:36 ` [PATCH v4 1/6] " Alexandru Ardelean
2021-02-17  7:36 ` [PATCH v4 2/6] Documentation: iio: add doc for high-speed buffer API Alexandru Ardelean
2021-02-17  7:36 ` Alexandru Ardelean [this message]
2021-02-17  7:36 ` [PATCH v4 4/6] iio: buffer-dma: reduce the type of block.size to u32 Alexandru Ardelean
2021-02-17  7:36 ` [PATCH v4 5/6] iio: buffer-dma: Add mmap support Alexandru Ardelean
2021-02-17  7:36 ` [PATCH v4 6/6] tools: iio: add example for high-speed buffer support Alexandru Ardelean
2021-02-18 13:10 ` [PATCH v4 0/6] iio: core: Add mmap interface infrastructure Jonathan Cameron
2021-02-27 17:52   ` Jonathan Cameron

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