Re: [PATCH v2 2/2] remoteproc: enhance rproc_put() for clusters

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Hi Tanmay,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on e19967994d342a5986d950a1bfddf19d7e1191b7]

url:    https://github.com/intel-lab-lkp/linux/commits/Tanmay-Shah/remoteproc-Make-rproc_get_by_phandle-work-for-clusters/20230322-121102
base:   e19967994d342a5986d950a1bfddf19d7e1191b7
patch link:    https://lore.kernel.org/r/20230322040933.924813-3-tanmay.shah%40amd.com
patch subject: [PATCH v2 2/2] remoteproc: enhance rproc_put() for clusters
config: ia64-allyesconfig (https://download.01.org/0day-ci/archive/20230322/202303221514.3xIiCbpk-lkp@xxxxxxxxx/config)
compiler: ia64-linux-gcc (GCC) 12.1.0
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
        # https://github.com/intel-lab-lkp/linux/commit/573d22d13a697097d02d6c29a75fb0fb1ac6d8fe
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Tanmay-Shah/remoteproc-Make-rproc_get_by_phandle-work-for-clusters/20230322-121102
        git checkout 573d22d13a697097d02d6c29a75fb0fb1ac6d8fe
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=ia64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202303221514.3xIiCbpk-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   drivers/remoteproc/remoteproc_core.c: In function 'rproc_put':
>> drivers/remoteproc/remoteproc_core.c:2563:9: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
    2563 |         struct platform_device *cluster_pdev;
         |         ^~~~~~


vim +2563 drivers/remoteproc/remoteproc_core.c

  2550	
  2551	/**
  2552	 * rproc_put() - release rproc reference
  2553	 * @rproc: the remote processor handle
  2554	 *
  2555	 * This function decrements the rproc dev refcount.
  2556	 *
  2557	 * If no one holds any reference to rproc anymore, then its refcount would
  2558	 * now drop to zero, and it would be freed.
  2559	 */
  2560	void rproc_put(struct rproc *rproc)
  2561	{
  2562		module_put(rproc->dev.parent->driver->owner);
> 2563		struct platform_device *cluster_pdev;
  2564	
  2565		if (rproc->dev.parent) {
  2566			if (rproc->dev.parent->driver) {
  2567				module_put(rproc->dev.parent->driver->owner);
  2568			} else {
  2569				cluster_pdev = of_find_device_by_node(rproc->dev.parent->of_node->parent);
  2570				if (cluster_pdev) {
  2571					module_put(cluster_pdev->dev.driver->owner);
  2572					put_device(&cluster_pdev->dev);
  2573				}
  2574			}
  2575		}
  2576		put_device(&rproc->dev);
  2577	}
  2578	EXPORT_SYMBOL(rproc_put);
  2579	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests



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