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

iio: adc: ad_sigma_delta: change to buffer predisable

to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-testing 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 be merged to the char-misc-next branch sometime soon, after it passes testing, and the merge window is open.

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

From 66d4374d97f85516b5a22418c5e798aed2606dec Mon Sep 17 00:00:00 2001 From: David Lechner dlechner@baylibre.com Date: Thu, 3 Jul 2025 16:07:44 -0500 Subject: iio: adc: ad_sigma_delta: change to buffer predisable MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit

Change the buffer disable callback from postdisable to predisable. This balances the existing posteanble callback. Using postdisable with posteanble can be problematic, for example, if update_scan_mode fails, it would call postdisable without ever having called posteanble, so the drivers using this would be in an unexpected state when postdisable was called.

Fixes: af3008485ea0 ("iio:adc: Add common code for ADI Sigma Delta devices") Signed-off-by: David Lechner dlechner@baylibre.com Reviewed-by: Nuno Sá nuno.sa@analog.com Link: https://patch.msgid.link/20250703-iio-adc-ad_sigma_delta-buffer-predisable-v... Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com --- drivers/iio/adc/ad_sigma_delta.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c index 9d2dba0a0ee6..7852884703b0 100644 --- a/drivers/iio/adc/ad_sigma_delta.c +++ b/drivers/iio/adc/ad_sigma_delta.c @@ -582,7 +582,7 @@ static int ad_sd_buffer_postenable(struct iio_dev *indio_dev) return ret; }

-static int ad_sd_buffer_postdisable(struct iio_dev *indio_dev) +static int ad_sd_buffer_predisable(struct iio_dev *indio_dev) { struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);

@@ -682,7 +682,7 @@ static bool ad_sd_validate_scan_mask(struct iio_dev *indio_dev, const unsigned l

static const struct iio_buffer_setup_ops ad_sd_buffer_setup_ops = { .postenable = &ad_sd_buffer_postenable, - .postdisable = &ad_sd_buffer_postdisable, + .predisable = &ad_sd_buffer_predisable, .validate_scan_mask = &ad_sd_validate_scan_mask, };