Change return value to 0 if no device is bound since unsigned int cannot support negative error codes. Signed-off-by: Cristina Opriceana <cristina.opriceana@xxxxxxxxx> --- drivers/iio/industrialio-buffer.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index faed6ef..e8e87cf 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -155,7 +155,9 @@ ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf, * a wait queue * * Return: (POLLIN | POLLRDNORM) if data is available for reading - * or 0 for other cases + * and 0 for other cases, e.g. no device is bound or no + * hardware fifo flush could be triggered. + * */ unsigned int iio_buffer_poll(struct file *filp, struct poll_table_struct *wait) @@ -164,7 +166,7 @@ unsigned int iio_buffer_poll(struct file *filp, 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)) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
