Re: [PATCH] firmware: arm_scpi: Fix a reference leak on device node

[Felix Gu <gu_0233@qq.com>]

Hi Dan,

Thanks for the review.

I found this issue through code review.

 From the comments and implementation, I believe this is a problem.

The caller often misses calling of_node_put(), and I have found a lot of

similar issues in the driver code.


Best regards,

Felix Gu

在 2026/1/19 3:15, Dan Carpenter 写道:
> On Fri, Jan 16, 2026 at 08:54:39PM +0800, Felix Gu wrote:
>> When calling of_parse_phandle_with_args(), the caller is responsible
>> to call of_node_put() to release the reference of device node.
>> In scpi_dev_domain_id, it does not release the reference.
>>
>> Fixes: 45ca7df7c345 ("firmware: arm_scpi: add support to populate OPPs and get transition latency")
>>
> nit: delete the blank line after the Fixes tag.
>
>> Signed-off-by: Felix Gu <gu_0233@qq.com>
> Did you find this issue just by reviewing the code?  I read the comments
> and then looked at a sample of four other callers and none of them
> called of_node_put().  So it's a weird thing.  If this is really the rule
> then we should have a static checker heuristic to enforce it.
>
> regards,
> dan carpenter