patch "iio: inkern: call iio_device_put() only on mapped devices" added to char-misc-linus

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

iio: inkern: call iio_device_put() only on mapped devices

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 64f43895b4457532a3cc524ab250b7a30739a1b1 Mon Sep 17 00:00:00 2001
From: Joe Hattori <[email protected]>
Date: Wed, 4 Dec 2024 20:13:42 +0900
Subject: iio: inkern: call iio_device_put() only on mapped devices

In the error path of iio_channel_get_all(), iio_device_put() is called on all IIO devices, which can cause a refcount imbalance. Fix this error by calling iio_device_put() only on IIO devices whose refcounts were previously incremented by iio_device_get().

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

index 136b225b6bc8..9050a59129e6 100644
@@ -500,7 +500,7 @@ struct iio_channel *iio_channel_get_all(struct device *dev)
 	return_ptr(chans);
 
 error_free_chans:
-	for (i = 0; i < nummaps; i++)
+	for (i = 0; i < mapind; i++)
 		iio_device_put(chans[i].indio_dev);
 	return ERR_PTR(ret);
 }

2.47.1