Re: [PATCH v1 4/4] virt: vmgenid: add support for devicetree bindings

[kernel test robot]

Hi Sudan,

kernel test robot noticed the following build warnings:

[auto build test WARNING on robh/for-next]
[also build test WARNING on linus/master v6.8 next-20240320]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Sudan-Landge/virt-vmgenid-rearrange-code-to-make-review-easier/20240319-223642
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/20240319143253.22317-5-sudanl%40amazon.com
patch subject: [PATCH v1 4/4] virt: vmgenid: add support for devicetree bindings
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20240320/202403201544.8xvAuo13-lkp@xxxxxxxxx/config)
compiler: alpha-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240320/202403201544.8xvAuo13-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/202403201544.8xvAuo13-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   drivers/virt/vmgenid.c: In function 'vmgenid_add_acpi':
   drivers/virt/vmgenid.c:79:45: error: invalid use of undefined type 'struct acpi_device'
      79 |         status = acpi_evaluate_object(device->handle, "ADDR", NULL, &parsed);
         |                                             ^~
   drivers/virt/vmgenid.c:96:56: error: invalid use of undefined type 'struct acpi_device'
      96 |                                   devm_memremap(&device->dev, phys_addr, VMGENID_SIZE, MEMREMAP_WB)
         |                                                        ^~
   drivers/virt/vmgenid.c:102:52: error: invalid use of undefined type 'struct acpi_device'
     102 |         status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
         |                                                    ^~
   drivers/virt/vmgenid.c: At top level:
>> drivers/virt/vmgenid.c:196:36: warning: 'vmgenid_acpi_ids' defined but not used [-Wunused-const-variable=]
     196 | static const struct acpi_device_id vmgenid_acpi_ids[] = {
         |                                    ^~~~~~~~~~~~~~~~


vim +/vmgenid_acpi_ids +196 drivers/virt/vmgenid.c

   195	
 > 196	static const struct acpi_device_id vmgenid_acpi_ids[] = {
   197		{ "VMGENCTR", 0 },
   198		{ "VM_GEN_COUNTER", 0 },
   199		{ }
   200	};
   201	

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