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| author | Lars-Peter Clausen <lars@metafoo.de> | 2016-07-11 13:54:17 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-24 10:09:30 +0200 |
| commit | 4215a755968d4e21fa982298e16934506723e038 (patch) | |
| tree | 1425fae4efd07d0e4e465a3e457f7aab5c6561cd | |
| parent | 075dc2dd4d94bd4747252cf0700d928a75a9ca87 (diff) | |
| download | lwn-4215a755968d4e21fa982298e16934506723e038.tar.gz lwn-4215a755968d4e21fa982298e16934506723e038.zip | |
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>
| -rw-r--r-- | drivers/iio/adc/ad799x.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c index a3f5254f4e51..03962233501c 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 = { |