patch "iio: buffer: correctly return bytes written in output buffers" added to char-misc-linus

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

iio: buffer: correctly return bytes written in output buffers

to my char-misc git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
in the char-misc-linus 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 hopefully also be merged in Linus's tree for the next -rc kernel release.

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

From b5184a26a28fac1d708b0bfeeb958a9260c2924c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nuno=20S=C3=A1?= <[email protected]>
Date: Thu, 16 Feb 2023 11:14:50 +0100
Subject: iio: buffer: correctly return bytes written in output buffers
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If for some reason 'rb->access->write()' does not write the full requested data and the O_NONBLOCK is set, we would return 'n' to userspace which is not really truth. Hence, let's return the number of bytes we effectively wrote.

---
 drivers/iio/industrialio-buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 80c78bd6bbef..6340d8e1430b 100644
@@ -220,7 +220,7 @@ static ssize_t iio_buffer_write(struct file *filp, const char __user *buf,
 	} while (ret == 0);
 	remove_wait_queue(&rb->pollq, &wait);
 
-	return ret < 0 ? ret : n;
+	return ret < 0 ? ret : written;
 }
 
 /**

2.40.0