Commit 7d3cc21d authored Jul 11, 2016 by Lars-Peter Clausen Committed by Jonathan Cameron Aug 15, 2016

iio: ad799x: Fix buffered capture for ad7991/ad7995/ad7999



The data buffer for captured mode for the ad799x driver is allocated in the
update_scan_mode() callback. This callback is not set in the iio_info
struct for the ad7791/ad7995/ad7999, which means that the data buffer is
not allocated when a captured transfer is started. As a result the driver
crashes when the first sample is received. To fix this properly set the
update_scan_mode() callback.

Fixes: d8dca330 ("staging:iio:ad799x: Preallocate sample buffer")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

parent b2f0c096

drivers/iio/adc/ad799x.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -527,6 +527,7 @@ static struct attribute_group ad799x_event_attrs_group = {
		static const struct iio_info ad7991_info = {
		.read_raw = &ad799x_read_raw,
		.driver_module = THIS_MODULE,
		.update_scan_mode = ad799x_update_scan_mode,
		};

		static const struct iio_info ad7993_4_7_8_noirq_info = {

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