rpmsg: glink: Release driver_override

[ Upstream commit 76bd5611ae9f62adb5fe5969b9e4c552c047b90c ]

Upon termination of the rpmsg_device, driver_override needs to be freed
to avoid leaking the potentially assigned string.

Fixes: 4e957d31f62f ("rpmsg: Fix kfree() of static memory on setting driver_override")
Fixes: 31d954db646f ("rpmsg: Add driver_override device attribute for rpmsg_device")
Reviewed-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230109223931.1706429-1-quic_bjorande@quicinc.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index bb917746ad4bbbfcdcba234bc5ac4c9c2e167b4e..35df1b0a515bf6ec27ebca3a9f9e3dc9fb218de7 100644 (file)
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -1447,6 +1447,7 @@ static void qcom_glink_rpdev_release(struct device *dev)
 {
        struct rpmsg_device *rpdev = to_rpmsg_device(dev);
 
+       kfree(rpdev->driver_override);
        kfree(rpdev);
 }
 
@@ -1690,6 +1691,7 @@ static void qcom_glink_device_release(struct device *dev)
 
        /* Release qcom_glink_alloc_channel() reference */
        kref_put(&channel->refcount, qcom_glink_channel_release);
+       kfree(rpdev->driver_override);
        kfree(rpdev);
 }