patch "iio: adc: ti-ads1119: Fix unbalanced pm reference count in" added to char-misc-linus

patch "iio: adc: ti-ads1119: Fix unbalanced pm reference count in" added to char-misc-linus

[gregkh]

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

    iio: adc: ti-ads1119: Fix unbalanced pm reference count in

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 48a5c36577ebe0144f8ede70e59b59ea18b75089 Mon Sep 17 00:00:00 2001
From: Felix Gu <ustc.gu@gmail.com>
Date: Sat, 28 Feb 2026 01:48:19 +0800
Subject: iio: adc: ti-ads1119: Fix unbalanced pm reference count in
 ds1119_single_conversion()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

In ads1119_single_conversion(), if pm_runtime_resume_and_get() fails,
the code jumps to the pdown label, which calls
pm_runtime_put_autosuspend().

Since pm_runtime_resume_and_get() automatically decrements the usage
counter on failure, the subsequent call to pm_runtime_put_autosuspend()
causes an unbalanced reference counter.

Fixes: a9306887eba4 ("iio: adc: ti-ads1119: Add driver")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: João Paulo Gonçalves <jpaulo.silvagoncalves@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/iio/adc/ti-ads1119.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ti-ads1119.c b/drivers/iio/adc/ti-ads1119.c
index c9cedc59cdcd..4454f28b2b58 100644
--- a/drivers/iio/adc/ti-ads1119.c
+++ b/drivers/iio/adc/ti-ads1119.c
@@ -274,7 +274,7 @@ static int ads1119_single_conversion(struct ads1119_state *st,
 
 	ret = pm_runtime_resume_and_get(dev);
 	if (ret)
-		goto pdown;
+		return ret;
 
 	ret = ads1119_configure_channel(st, mux, gain, datarate);
 	if (ret)
-- 
2.53.0