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patch "iio: industrialio-buffer: Fix iio_buffer_poll return value" added to staging-next

PATCH [email protected] 1 participant 1 message Aug 12, 2015

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This is a note to let you know that I've just added the patch titled

iio: industrialio-buffer: Fix iio_buffer_poll return value

to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-next branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will also be merged in the next major kernel release during the merge window.

If you have any questions about this process, please let me know.

Quoted 1 line

From 1bdc0293901cbea23c6dc29432e81919d4719844 Mon Sep 17 00:00:00 2001

From: Cristina Opriceana <[email protected]>
Date: Mon, 3 Aug 2015 13:37:40 +0300
Subject: 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")

---
 drivers/iio/industrialio-buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/iio/industrialio-buffer.c +1 -1
index faed6efa49ec..d7e908acb480 100644
@@ -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))
Signature · 1 line
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