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authorLars-Peter Clausen <lars@metafoo.de>2016-07-11 13:54:17 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-09-24 10:07:38 +0200
commit734ee23cd4c134ed046812c82302fe05543b3b92 (patch)
treef68b974ffa2e34e82f646e8faa74509861fcb2d1 /drivers/iio
parent023e76b1d1fd4857ba6af6e99dfbefd667aae6d1 (diff)
iio: ad799x: Fix buffered capture for ad7991/ad7995/ad7999
commit 7d3cc21dab5313a02f2f3ca8164529b828a030d1 upstream. 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: d8dca33027c1 ("staging:iio:ad799x: Preallocate sample buffer") Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/iio')
-rw-r--r--drivers/iio/adc/ad799x.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
index 01d71588d752..ba82de25a797 100644
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -533,6 +533,7 @@ 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 = {