iio: buffer: check if a buffer has been set up when poll is called

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commit 4cd140bda6 upstream.

If no iio buffer has been set up and poll is called return 0.
Without this check there will be a null pointer dereference when
calling poll on a iio driver without an iio buffer.

Signed-off-by: Stefan Windfeldt-Prytz <stefan.windfeldt@axis.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

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Stefan Windfeldt-Prytz 2018-02-15 15:02:53 +01:00 • committed by Ben Hutchings

parent 1de843c0ed

commit 11c45a46ca

1 changed files with 1 additions and 1 deletions

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drivers/iio/industrialio-buffer.c

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