The OF node reference obtained from of_parse_phandle() should be dropped if node is not compatible with arm,scmi-shmem.
Fixes: 507cd4d2c5eb ("firmware: arm_scmi: Add compatibility checks for shmem node") Cc: stable@vger.kernel.org Signed-off-by: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org --- drivers/firmware/arm_scmi/smc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/arm_scmi/smc.c b/drivers/firmware/arm_scmi/smc.c index 621c37efe3ec..2d8c510fbf52 100644 --- a/drivers/firmware/arm_scmi/smc.c +++ b/drivers/firmware/arm_scmi/smc.c @@ -137,8 +137,10 @@ static int smc_chan_setup(struct scmi_chan_info *cinfo, struct device *dev, return -ENOMEM;
np = of_parse_phandle(cdev->of_node, "shmem", 0); - if (!of_device_is_compatible(np, "arm,scmi-shmem")) + if (!of_device_is_compatible(np, "arm,scmi-shmem")) { + of_node_put(np); return -ENXIO; + }
ret = of_address_to_resource(np, 0, &res); of_node_put(np);