From 1bdc0293901cbea23c6dc29432e81919d4719844 Mon Sep 17 00:00:00 2001 From: Cristina Opriceana Date: Mon, 3 Aug 2015 13:37:40 +0300 Subject: [PATCH] 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 Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index faed6efa49ec..d7e908acb480 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -164,7 +164,7 @@ 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)) -- 2.20.1