Re: [PATCH RFC v2] of: property: Fix potential firmware node reference's argument count got out of range

[Andy Shevchenko]

On Tue, Jan 14, 2025 at 11:51:13PM +0800, Zijun Hu wrote:
> From: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
> 
> Currently, the following two macros have different values:
> 
> // The maximal argument count for firmware node reference
>  #define NR_FWNODE_REFERENCE_ARGS	8
> // The maximal argument count for OF node reference
>  #define MAX_PHANDLE_ARGS 16
> 
> But of_fwnode_get_reference_args() directly assigns OF node
> reference argument count @of_args.args_count to frimware

firmware

> @args->nargs, and may cause firmware node reference argument
> count @of_args.args_count got out of range, namely, in [9, 16].
> 
> Fix by increasing NR_FWNODE_REFERENCE_ARGS to 16 to meet OF requirement.

-- 
With Best Regards,
Andy Shevchenko