Patch "iio: ensure ret is initialized to zero before entering do loop" has been added to the 4.7-stable tree

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

iio: ensure ret is initialized to zero before entering do loop

to the 4.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
iio-ensure-ret-is-initialized-to-zero-before-entering-do-loop.patch
and it can be found in the queue-4.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Colin Ian King <[email protected]>
Date: Mon, 5 Sep 2016 15:39:06 +0100
Subject: iio: ensure ret is initialized to zero before entering do loop

From: Colin Ian King <[email protected]>

commit 5dba4b14bafe801083d01e1f400816df7e5a8f2e upstream.

A recent fix to iio_buffer_read_first_n_outer removed ret from being set by a return from wait_event_interruptible and also added a continue in a loop which causes the variable ret to not be set when it reaches the end of the loop. Fix this by initializing ret to zero.

Also remove extraneous white space at the end of the loop.

---
 drivers/iio/industrialio-buffer.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -110,7 +110,7 @@ ssize_t iio_buffer_read_first_n_outer(st
 	DEFINE_WAIT_FUNC(wait, woken_wake_function);
 	size_t datum_size;
 	size_t to_wait;
-	int ret;
+	int ret = 0;
 
 	if (!indio_dev->info)
 		return -ENODEV;

@@ -153,7 +153,7 @@ ssize_t iio_buffer_read_first_n_outer(st
 		ret = rb->access->read_first_n(rb, n, buf);
 		if (ret == 0 && (filp->f_flags & O_NONBLOCK))
 			ret = -EAGAIN;
-	 } while (ret == 0);
+	} while (ret == 0);
 	remove_wait_queue(&rb->pollq, &wait);
 
 	return ret;

Patches currently in stable-queue which might be from [email protected] are

queue-4.7/iio-ensure-ret-is-initialized-to-zero-before-entering-do-loop.patch