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    Subject[PATCH 4.1 020/102] iio: industrialio-buffer: Fix iio_buffer_poll return value
    Date
    4.1-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Cristina Opriceana <cristina.opriceana@gmail.com>

    commit 1bdc0293901cbea23c6dc29432e81919d4719844 upstream.

    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>
    Signed-off-by: Jonathan Cameron <jic23@kernel.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/iio/industrialio-buffer.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/iio/industrialio-buffer.c
    +++ b/drivers/iio/industrialio-buffer.c
    @@ -151,7 +151,7 @@ unsigned int iio_buffer_poll(struct file
    struct iio_buffer *rb = indio_dev->buffer;

    if (!indio_dev->info)
    - return -ENODEV;
    + return 0;

    poll_wait(filp, &rb->pollq, wait);
    if (iio_buffer_ready(indio_dev, rb, rb->watermark, 0))



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