6.6-stable review patch. If anyone has any objections, please let me know.
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From: Miaoqian Lin linmq006@gmail.com
commit 445e1658894fd74eab7e53071fa16233887574ed upstream.
The function calls of_parse_phandle() which returns a device node with an incremented reference count. When the bonded device is not available, the function returns NULL without releasing the reference, causing a reference leak.
Add of_node_put(np) to release the device node reference. The of_node_put function handles NULL pointers.
Found through static analysis by reviewing the doc of of_parse_phandle() and cross-checking its usage patterns across the codebase.
Fixes: 7625ee981af1 ("[media] media: platform: rcar_drif: Add DRIF support") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin linmq006@gmail.com Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be Reviewed-by: Fabrizio Castro fabrizio.castro.jz@renesas.com Signed-off-by: Hans Verkuil hverkuil+cisco@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/media/platform/renesas/rcar_drif.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/media/platform/renesas/rcar_drif.c +++ b/drivers/media/platform/renesas/rcar_drif.c @@ -1249,6 +1249,7 @@ static struct device_node *rcar_drif_bon if (np && of_device_is_available(np)) return np;
+ of_node_put(np); return NULL; }