Subject: Re: [PATCH v2 06/12] powerpc: wiiu: udbg support for latteipc

From: kernel test robot <[email-masked]>
Date: Mon, 27 Jun 2022 08:15:20 +0800

Hi Ash,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on powerpc/next]
[also build test WARNING on robh/for-next linus/master v5.19-rc4 next-20220624]
[cannot apply to mpe/next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/intel-lab-lkp/linux/commits/Ash-Logan/dt-bindings-wiiu-Document-the-Nintendo-Wii-U-devicetree/20220622-221056
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-randconfig-c003-20220626
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project b0d6dd3905db145853c7c744ac92d49b00b1fa20)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/acc3ab8f224a93f1a41267aeb09dee3d2ec810fb
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Ash-Logan/dt-bindings-wiiu-Document-the-Nintendo-Wii-U-devicetree/20220622-221056
        git checkout acc3ab8f224a93f1a41267aeb09dee3d2ec810fb
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/platforms/wiiu/ drivers/usb/misc/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <[email-masked]>

All warnings (new ones prefixed by >>):

>> arch/powerpc/platforms/wiiu/udbg_latteipc.c:65:13: warning: no previous prototype for function 'latteipc_udbg_init' [-Wmissing-prototypes]
   void __init latteipc_udbg_init(void)
               ^
   arch/powerpc/platforms/wiiu/udbg_latteipc.c:65:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __init latteipc_udbg_init(void)
   ^
   static 
   1 warning generated.

vim +/latteipc_udbg_init +65 arch/powerpc/platforms/wiiu/udbg_latteipc.c

    61	
    62	/*
    63	 * Latte IPC udbg support initialization.
    64	 */
  > 65	void __init latteipc_udbg_init(void)
    66	{
    67		struct device_node *np;
    68		void __iomem *ipc_io_base;
    69	
    70		if (latteipc_io_base)
    71			udbg_printf("%s: early -> final\n", __func__);
    72	
    73		np = of_find_compatible_node(NULL, NULL, "nintendo,latte-ipc");
    74		if (!np) {
    75			udbg_printf("%s: IPC node not found\n", __func__);
    76			goto out;
    77		}
    78	
    79		ipc_io_base = latteipc_udbg_setup_ipc_io_base(np);
    80		if (!ipc_io_base) {
    81			udbg_printf("%s: failed to setup IPC io base\n", __func__);
    82			goto done;
    83		}
    84	
    85		udbg_putc = latteipc_udbg_putc;
    86		udbg_printf("latteipc_udbg: ready\n");
    87	
    88	done:
    89		of_node_put(np);
    90	out:
    91		return;
    92	}
    93	

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