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iio: industrialio-buffer: Fix iio_buffer_poll return value

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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 <[email protected]>
Cc: <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>
This commit is contained in:
Cristina Opriceana 2015-08-03 13:37:40 +03:00 • committed by Jonathan Cameron
commit 1bdc029390
1 changed files with 1 additions and 1 deletions
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drivers/iio/industrialio-buffer.c
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@ -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))