[skn:v5.9/ffa 7/8] drivers/firmware/arm_ffa/bus.c:135:26: error: dereferencing pointer to incomplete type 'const struct file_operations'

[skn:v5.9/ffa 7/8] drivers/firmware/arm_ffa/bus.c:135:26: error: dereferencing pointer to incomplete type 'const struct file_operations'

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git v5.9/ffa
head:   a1dd26f309d173a71b9b7b18cf6221b4e29d397e
commit: de254ee743800be7154e0b19239f97fa748d1e6d [7/8] firmware: Add support for PSA FF-A transport for VM partitions
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 9.3.0
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
        git checkout de254ee743800be7154e0b19239f97fa748d1e6d
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/firmware/arm_ffa/bus.c: In function 'ffa_device_register':
>> drivers/firmware/arm_ffa/bus.c:135:26: error: dereferencing pointer to incomplete type 'const struct file_operations'
     135 |   cdev->owner = cdev->ops->owner;
         |                          ^~
   drivers/firmware/arm_ffa/bus.c: In function 'arm_ffa_bus_init':
>> drivers/firmware/arm_ffa/bus.c:166:8: error: implicit declaration of function 'alloc_chrdev_region' [-Werror=implicit-function-declaration]
     166 |  ret = alloc_chrdev_region(&ffa_devt, 0, FFA_MAX_CDEVS, DEVICE_NAME);
         |        ^~~~~~~~~~~~~~~~~~~
>> drivers/firmware/arm_ffa/bus.c:175:3: error: implicit declaration of function 'unregister_chrdev_region' [-Werror=implicit-function-declaration]
     175 |   unregister_chrdev_region(ffa_devt, FFA_MAX_CDEVS);
         |   ^~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors
--
>> drivers/firmware/arm_ffa/driver.c:38:10: fatal error: asm/memory.h: No such file or directory
      38 | #include <asm/memory.h>
         |          ^~~~~~~~~~~~~~
   compilation terminated.

# https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git/commit/?id=de254ee743800be7154e0b19239f97fa748d1e6d
git remote add skn https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git
git fetch --no-tags skn v5.9/ffa
git checkout de254ee743800be7154e0b19239f97fa748d1e6d
vim +135 drivers/firmware/arm_ffa/bus.c

   106	
   107	int ffa_device_register(struct ffa_device *ffa_dev)
   108	{
   109		int ret;
   110		struct cdev *cdev;
   111		struct device *dev;
   112	
   113		if (!ffa_dev)
   114			return -EINVAL;
   115	
   116		dev = &ffa_dev->dev;
   117		cdev = &ffa_dev->cdev;
   118		mutex_init(&ffa_dev->mutex);
   119	
   120		dev->bus = &ffa_bus_type;
   121		dev->type = &ffa_dev_type;
   122		dev->release = ffa_release_device;
   123	
   124		device_initialize(dev);
   125	
   126		if (cdev->ops) {
   127			ret = ida_simple_get(&ffa_dev_id, 0, FFA_MAX_CDEVS, GFP_KERNEL);
   128			if (ret < 0) {
   129				put_device(dev);
   130				return ret;
   131			}
   132	
   133			dev->devt = MKDEV(MAJOR(ffa_devt), ret);
   134	
 > 135			cdev->owner = cdev->ops->owner;
   136		}
   137	
   138		ret = cdev_device_add(cdev, dev);
   139		if (ret) {
   140			dev_err(dev, "unable to cdev_device_add() %s, major %d, minor %d, err=%d\n",
   141				dev_name(dev), MAJOR(dev->devt), MINOR(dev->devt),
   142				ret);
   143			put_device(dev);
   144			return ret;
   145		}
   146	
   147		return 0;
   148	}
   149	EXPORT_SYMBOL_GPL(ffa_device_register);
   150	
   151	void ffa_device_unregister(struct ffa_device *ffa_dev)
   152	{
   153		if (!ffa_dev)
   154			return;
   155	
   156		cdev_device_del(&ffa_dev->cdev, &ffa_dev->dev);
   157	
   158		put_device(&ffa_dev->dev);
   159	}
   160	EXPORT_SYMBOL_GPL(ffa_device_unregister);
   161	
   162	static int __init arm_ffa_bus_init(void)
   163	{
   164		int ret;
   165	
 > 166		ret = alloc_chrdev_region(&ffa_devt, 0, FFA_MAX_CDEVS, DEVICE_NAME);
   167		if (ret) {
   168			pr_err("failed to allocate char dev region\n");
   169			return ret;
   170		}
   171	
   172		ret = bus_register(&ffa_bus_type);
   173		if (ret) {
   174			pr_err("ffa bus register failed (%d)\n", ret);
 > 175			unregister_chrdev_region(ffa_devt, FFA_MAX_CDEVS);
   176		}
   177	
   178		return ret;
   179	}
   180	subsys_initcall(arm_ffa_bus_init);
   181	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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