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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>, <rafael@kernel.org>,
	<gregkh@linuxfoundation.org>,
	Alexandru Ardelean <alexandru.ardelean@analog.com>
Subject: [PATCH v4 09/17] iio: buffer: dmaengine: obtain buffer object from attribute
Date: Wed, 10 Feb 2021 12:08:15 +0200	[thread overview]
Message-ID: <20210210100823.46780-10-alexandru.ardelean@analog.com> (raw)
In-Reply-To: <20210210100823.46780-1-alexandru.ardelean@analog.com>

The reference to the IIO buffer object is stored on the attribute object.
So we need to unwind it to obtain it.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
---
 drivers/iio/buffer/industrialio-buffer-dmaengine.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/buffer/industrialio-buffer-dmaengine.c b/drivers/iio/buffer/industrialio-buffer-dmaengine.c
index b0cb9a35f5cd..1e9e8fdd0719 100644
--- a/drivers/iio/buffer/industrialio-buffer-dmaengine.c
+++ b/drivers/iio/buffer/industrialio-buffer-dmaengine.c
@@ -133,8 +133,9 @@ static ssize_t iio_dmaengine_buffer_get_length_align(struct device *dev,
 	struct device_attribute *attr, char *buf)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 	struct dmaengine_buffer *dmaengine_buffer =
-		iio_buffer_to_dmaengine_buffer(indio_dev->buffer);
+		iio_buffer_to_dmaengine_buffer(buffer);
 
 	return sprintf(buf, "%zu\n", dmaengine_buffer->align);
 }
-- 
2.17.1


  parent reply	other threads:[~2021-02-10 10:18 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-10 10:08 [PATCH v4 00/17] iio: core,buffer: add support for multiple IIO buffers per IIO device Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 01/17] docs: ioctl-number.rst: reserve IIO subsystem ioctl() space Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 02/17] iio: core: register chardev only if needed Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 03/17] iio: core-trigger: make iio_device_register_trigger_consumer() an int return Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 04/17] iio: core: rework iio device group creation Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 05/17] iio: buffer: group attr count and attr alloc Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 06/17] iio: core: merge buffer/ & scan_elements/ attributes Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 07/17] iio: add reference to iio buffer on iio_dev_attr Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 08/17] iio: buffer: wrap all buffer attributes into iio_dev_attr Alexandru Ardelean
2021-02-10 10:08 ` Alexandru Ardelean [this message]
2021-02-10 10:08 ` [PATCH v4 10/17] iio: core: wrap iio device & buffer into struct for character devices Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 11/17] iio: buffer: move __iio_buffer_free_sysfs_and_mask() before alloc Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 12/17] iio: buffer: introduce support for attaching more IIO buffers Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 13/17] iio: buffer: add ioctl() to support opening extra buffers for IIO device Alexandru Ardelean
2021-02-10 14:04   ` kernel test robot
2021-02-10 10:08 ` [PATCH v4 14/17] iio: core: rename 'dev' -> 'indio_dev' in iio_device_alloc() Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 15/17] tools: iio: make iioutils_get_type() private in iio_utils Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 16/17] tools: iio: privatize globals and functions in iio_generic_buffer.c file Alexandru Ardelean
2021-02-10 10:08 ` [PATCH v4 17/17] tools: iio: convert iio_generic_buffer to use new IIO buffer API Alexandru Ardelean

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