iio: Return -ENODEV for file operations if the device has been unregistered

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If the IIO device has been unregistered return -ENODEV for any further file
operations like read() and ioctl(). This avoids userspace being able to grab new
references to the device.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

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Lars-Peter Clausen 2013-10-04 12:06:00 +01:00 • committed by Jonathan Cameron

parent 9e69c935fa

commit f18e7a068a

3 changed files with 15 additions and 0 deletions

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6

drivers/iio/industrialio-buffer.c

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3

drivers/iio/industrialio-core.c

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6

drivers/iio/industrialio-event.c

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