This is a note to let you know that I've just added the patch titled

staging: iio: ad5933: switch buffer mode to software

to my staging git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git in the staging-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 7d2b8e6aaf9ee87910c2337e1c59bb5d3e3ba8c5 Mon Sep 17 00:00:00 2001

From: Alexandru Ardelean alexandru.ardelean@analog.com Date: Thu, 25 Jan 2018 14:30:45 +0200 Subject: staging: iio: ad5933: switch buffer mode to software

Since commit 152a6a884ae1 ("staging:iio:accel:sca3000 move to hybrid hard / soft buffer design.") the buffer mechanism has changed and the INDIO_BUFFER_HARDWARE flag has been unused.

Since commit 2d6ca60f3284 ("iio: Add a DMAengine framework based buffer") the INDIO_BUFFER_HARDWARE flag has been re-purposed for DMA buffers.

This driver has lagged behind these changes, and in order for buffers to work, the INDIO_BUFFER_SOFTWARE needs to be used.

Signed-off-by: Alexandru Ardelean alexandru.ardelean@analog.com Fixes: 2d6ca60f3284 ("iio: Add a DMAengine framework based buffer") Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com --- drivers/staging/iio/impedance-analyzer/ad5933.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c index 2b28fb9c0048..3bcf49466361 100644 --- a/drivers/staging/iio/impedance-analyzer/ad5933.c +++ b/drivers/staging/iio/impedance-analyzer/ad5933.c @@ -648,8 +648,6 @@ static int ad5933_register_ring_funcs_and_init(struct iio_dev *indio_dev) /* Ring buffer functions - here trigger setup related */ indio_dev->setup_ops = &ad5933_ring_setup_ops;

- indio_dev->modes |= INDIO_BUFFER_HARDWARE; - return 0; }

@@ -762,7 +760,7 @@ static int ad5933_probe(struct i2c_client *client, indio_dev->dev.parent = &client->dev; indio_dev->info = &ad5933_info; indio_dev->name = id->name; - indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->modes = (INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE); indio_dev->channels = ad5933_channels; indio_dev->num_channels = ARRAY_SIZE(ad5933_channels);