linux-kernel - [PATCH 1/1] mfd: core: Fix memory leak of 'cell'

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Message-Id: <20200716142851.1669946-1-lee.jones@linaro.org>
Date:   Thu, 16 Jul 2020 15:28:51 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     lee.jones@...aro.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] mfd: core: Fix memory leak of 'cell'

When creating a platform device from an MFD cell description, we
allocate some memory and make a copy which is then stored inside the
platform_device's structure.  However, care is not currently taken to
free the allocated memory when the platform device is torn down.

This patch takes care of the leak.

Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/mfd/mfd-core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
index f5a73af60dd40..e831e733b38cf 100644
--- a/drivers/mfd/mfd-core.c
+++ b/drivers/mfd/mfd-core.c
@@ -297,7 +297,10 @@ static int mfd_remove_devices_fn(struct device *dev, void *data)
 	regulator_bulk_unregister_supply_alias(dev, cell->parent_supplies,
 					       cell->num_parent_supplies);
 
+	kfree(cell);
+
 	platform_device_unregister(pdev);
+
 	return 0;
 }
 
-- 
2.25.1