[asahilinux:bits/210-gpu 28/198] rust/helpers.c:343:9: error: call to undeclared function 'of_node_is_root'; ISO C99 and later do not support implicit function declarations

[asahilinux:bits/210-gpu 28/198] rust/helpers.c:343:9: error: call to undeclared function 'of_node_is_root'; ISO C99 and later do not support implicit function declarations

[kernel test robot]

:::::: 
:::::: Manual check reason: "low confidence bisect report"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: Asahi Lina <lina@asahilina.net>
CC: Hector Martin <marcan@marcan.st>

tree:   https://github.com/AsahiLinux/linux bits/210-gpu
head:   c2bbe7fe79da5dff6da45eb1d4a5a582db740429
commit: 953ef7143b90440101a3facd5767e500af4b878e [28/198] rust: kernel: platform: Add Device.set_dma_masks()
:::::: branch date: 11 hours ago
:::::: commit date: 11 hours ago
config: x86_64-rhel-8.3-rust (https://download.01.org/0day-ci/archive/20230714/202307142200.fxtX1LTA-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce: (https://download.01.org/0day-ci/archive/20230714/202307142200.fxtX1LTA-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202307142200.fxtX1LTA-lkp@intel.com/

All errors (new ones prefixed by >>):

>> rust/helpers.c:343:9: error: call to undeclared function 'of_node_is_root'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>> rust/helpers.c:343:9: error: call to undeclared function 'of_node_is_root'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration], err: true
   thread 'main' panicked at 'Unable to generate bindings: ()', /opt/cross/rustc-1.66.0-bindgen-0.56.0/cargo/registry/src/github.com-1ecc6299db9ec823/bindgen-0.56.0/src/main.rs:54:36
   stack backtrace:
      0: rust_begin_unwind
                at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library/std/src/panicking.rs:575:5
      1: core::panicking::panic_fmt
                at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library/core/src/panicking.rs:65:14
      2: core::result::unwrap_failed
                at /rustc/69f9c33d71c871fc16ac445211281c6e7a340943/library/core/src/result.rs:1791:5
      3: bindgen::main
   note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.


vim +/of_node_is_root +343 rust/helpers.c

6560e14efd9648 Asahi Lina 2023-02-16  340  
cfdf514776556c Asahi Lina 2022-10-22  341  bool rust_helper_of_node_is_root(const struct device_node *np)
cfdf514776556c Asahi Lina 2022-10-22  342  {
cfdf514776556c Asahi Lina 2022-10-22 @343  	return of_node_is_root(np);
cfdf514776556c Asahi Lina 2022-10-22  344  }
cfdf514776556c Asahi Lina 2022-10-22  345  EXPORT_SYMBOL_GPL(rust_helper_of_node_is_root);
cfdf514776556c Asahi Lina 2022-10-22  346  

:::::: The code at line 343 was first introduced by commit
:::::: cfdf514776556c3c85668decf0b602a7d5b3fc14 rust: of: Add OF node abstraction

:::::: TO: Asahi Lina <lina@asahilina.net>
:::::: CC: Hector Martin <marcan@marcan.st>

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