Re: [PATCH 1/4] kunit: Add APIs for managing devices

[kernel test robot <lkp@xxxxxxxxx>]

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on c8613be119892ccceffbc550b9b9d7d68b995c9e]

url:    https://github.com/intel-lab-lkp/linux/commits/davidgow-google-com/kunit-Add-APIs-for-managing-devices/20231205-153349
base:   c8613be119892ccceffbc550b9b9d7d68b995c9e
patch link:    https://lore.kernel.org/r/20231205-kunit_bus-v1-1-635036d3bc13%40google.com
patch subject: [PATCH 1/4] kunit: Add APIs for managing devices
config: i386-randconfig-141-20231205 (https://download.01.org/0day-ci/archive/20231205/202312052230.ic1pg0uo-lkp@xxxxxxxxx/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231205/202312052230.ic1pg0uo-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312052230.ic1pg0uo-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> lib/kunit/device.c:100:22: warning: no previous prototype for '__kunit_device_register_internal' [-Wmissing-prototypes]
     100 | struct kunit_device *__kunit_device_register_internal(struct kunit *test,
         |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for DRM_I915_DEBUG_GEM
   Depends on [n]: HAS_IOMEM [=y] && DRM_I915 [=m] && EXPERT [=y] && DRM_I915_WERROR [=n]
   Selected by [m]:
   - DRM_I915_DEBUG [=y] && HAS_IOMEM [=y] && DRM_I915 [=m] && EXPERT [=y] && !COMPILE_TEST [=n]


vim +/__kunit_device_register_internal +100 lib/kunit/device.c

    99	
 > 100	struct kunit_device *__kunit_device_register_internal(struct kunit *test,
   101							      const char *name,
   102							      struct device_driver *drv)
   103	{
   104		struct kunit_device *kunit_dev;
   105		int err = -ENOMEM;
   106	
   107		kunit_dev = kzalloc(sizeof(struct kunit_device), GFP_KERNEL);
   108		if (!kunit_dev)
   109			return ERR_PTR(err);
   110	
   111		kunit_dev->owner = test;
   112	
   113		err = dev_set_name(&kunit_dev->dev, "%s.%s", test->name, name);
   114		if (err) {
   115			kfree(kunit_dev);
   116			return ERR_PTR(err);
   117		}
   118	
   119		/* Set the expected driver pointer, so we match. */
   120		kunit_dev->driver = drv;
   121	
   122		kunit_dev->dev.release = kunit_device_release;
   123		kunit_dev->dev.bus = &kunit_bus_type;
   124		kunit_dev->dev.parent = &kunit_bus;
   125	
   126		err = device_register(&kunit_dev->dev);
   127		if (err) {
   128			put_device(&kunit_dev->dev);
   129			return ERR_PTR(err);
   130		}
   131	
   132		kunit_add_action(test, device_unregister_wrapper, &kunit_dev->dev);
   133	
   134		return kunit_dev;
   135	}
   136	

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