iio: industrialio-buffer: Fix iio_buffer_poll return value
authorCristina Opriceana <cristina.opriceana@gmail.com>
Mon, 3 Aug 2015 10:37:40 +0000 (13:37 +0300)
committerJonathan Cameron <jic23@kernel.org>
Wed, 12 Aug 2015 18:26:34 +0000 (19:26 +0100)
commit1bdc0293901cbea23c6dc29432e81919d4719844
treec47f9eceedb3a99ae5f33dd369f3e175ba527849
parentaf255cd562aaa72455f9022a26afacd68f3fbf73
iio: industrialio-buffer: Fix iio_buffer_poll return value

Change return value to 0 if no device is bound since
unsigned int cannot support negative error codes.

Fixes: f18e7a068 ("iio: Return -ENODEV for file operations if the
device has been unregistered")

Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
drivers/iio/industrialio-buffer.c