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 the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: staging-iio-ad5933-switch-buffer-mode-to-software.patch and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
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
From: Alexandru Ardelean alexandru.ardelean@analog.com
commit 7d2b8e6aaf9ee87910c2337e1c59bb5d3e3ba8c5 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/staging/iio/impedance-analyzer/ad5933.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
--- 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_an /* 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_clien 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);
Patches currently in stable-queue which might be from alexandru.ardelean@analog.com are
queue-4.15/staging-iio-ad5933-switch-buffer-mode-to-software.patch queue-4.15/staging-iio-adc-ad7192-fix-external-frequency-setting.patch