This is a note to let you know that I've just added the patch titled
soc: versatile: realview: fix soc_dev leak during device remove
to the 5.4-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:
soc-versatile-realview-fix-soc_dev-leak-during-devic.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 20df9af892df09028517f4da01af278b7c16ea4c
Author: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Date: Sun Aug 25 20:05:24 2024 +0200
soc: versatile: realview: fix soc_dev leak during device remove
[ Upstream commit c774f2564c0086c23f5269fd4691f233756bf075 ]
If device is unbound, the soc_dev should be unregistered to prevent
memory leak.
Fixes: a2974c9c1f83 ("soc: add driver for the ARM RealView")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Link: https://lore.kernel.org/20240825-soc-dev-fixes-v1-3-ff4b35abed83@xxxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/soc/versatile/soc-realview.c b/drivers/soc/versatile/soc-realview.c
index 60947a5161e4c..9cddbde399860 100644
--- a/drivers/soc/versatile/soc-realview.c
+++ b/drivers/soc/versatile/soc-realview.c
@@ -4,6 +4,7 @@
*
* Author: Linus Walleij <linus.walleij@xxxxxxxxxx>
*/
+#include <linux/device.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/slab.h>
@@ -79,6 +80,13 @@ static ssize_t realview_get_build(struct device *dev,
static struct device_attribute realview_build_attr =
__ATTR(build, S_IRUGO, realview_get_build, NULL);
+static void realview_soc_socdev_release(void *data)
+{
+ struct soc_device *soc_dev = data;
+
+ soc_device_unregister(soc_dev);
+}
+
static int realview_soc_probe(struct platform_device *pdev)
{
struct regmap *syscon_regmap;
@@ -106,6 +114,11 @@ static int realview_soc_probe(struct platform_device *pdev)
if (IS_ERR(soc_dev))
return -ENODEV;
+ ret = devm_add_action_or_reset(&pdev->dev, realview_soc_socdev_release,
+ soc_dev);
+ if (ret)
+ return ret;
+
ret = regmap_read(syscon_regmap, REALVIEW_SYS_ID_OFFSET,
&realview_coreid);
if (ret)
