5.15-stable review patch. If anyone has any objections, please let me know.
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From: David Lechner dlechner@baylibre.com
[ Upstream commit 66d4374d97f85516b5a22418c5e798aed2606dec ]
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 Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/adc/ad_sigma_delta.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/iio/adc/ad_sigma_delta.c +++ b/drivers/iio/adc/ad_sigma_delta.c @@ -371,7 +371,7 @@ err_unlock: 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);
@@ -432,7 +432,7 @@ static irqreturn_t ad_sd_trigger_handler
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 = &iio_validate_scan_mask_onehot, };