[v2] firmware: arm_scmi: drop OF node reference in setup
Commit Message
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>
---
Changes in v2:
1. Correct also mailbox.c
---
drivers/firmware/arm_scmi/mailbox.c | 4 +++-
drivers/firmware/arm_scmi/smc.c | 4 +++-
2 files changed, 6 insertions(+), 2 deletions(-)
Comments
On Wed, Jul 19, 2023 at 08:16:52AM +0200, Krzysztof Kozlowski wrote:
> 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>
>
> ---
>
LGTM.
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Thanks,
Cristian
On Wed, 19 Jul 2023 08:16:52 +0200, Krzysztof Kozlowski wrote:
> The OF node reference obtained from of_parse_phandle() should be dropped
> if node is not compatible with arm,scmi-shmem.
>
Applied to sudeep.holla/linux (for-next/scmi/fixes), thanks!
[1/1] firmware: arm_scmi: drop OF node reference in setup
https://git.kernel.org/sudeep.holla/c/da042eb4f061
--
Regards,
Sudeep
@@ -166,8 +166,10 @@ static int mailbox_chan_setup(struct scmi_chan_info *cinfo, struct device *dev,
return -ENOMEM;
shmem = of_parse_phandle(cdev->of_node, "shmem", idx);
- if (!of_device_is_compatible(shmem, "arm,scmi-shmem"))
+ if (!of_device_is_compatible(shmem, "arm,scmi-shmem")) {
+ of_node_put(shmem);
return -ENXIO;
+ }
ret = of_address_to_resource(shmem, 0, &res);
of_node_put(shmem);
@@ -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);