[efi:next 1/4] drivers/firmware/efi/efi.c:1009:44: warning: passing argument 2 of 'efi_mem_desc_lookup' discards 'const' qualifier from pointer target type

[efi:next 1/4] drivers/firmware/efi/efi.c:1009:44: warning: passing argument 2 of 'efi_mem_desc_lookup' discards 'const' qualifier from pointer target type

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git next
head:   c8da97cbb39c4c043d8456fcae25aa921c844a3f
commit: 5992265762e666564b0275d72e54c514ab20c7f3 [1/4] efi: make efi_mem_type() and efi_mem_attributes() work on Xen PV
config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20260310/202603101851.bAhG7uGN-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260310/202603101851.bAhG7uGN-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603101851.bAhG7uGN-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/firmware/efi/efi.c: In function 'efi_mem_type':
>> drivers/firmware/efi/efi.c:1009:44: warning: passing argument 2 of 'efi_mem_desc_lookup' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
    1009 |         if (efi_mem_desc_lookup(phys_addr, &md))
         |                                            ^~~
   In file included from drivers/firmware/efi/efi.c:22:
   include/linux/efi.h:757:66: note: expected 'efi_memory_desc_t *' but argument is of type 'const efi_memory_desc_t *'
     757 | extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md);
         |                                               ~~~~~~~~~~~~~~~~~~~^~~~~~


vim +1009 drivers/firmware/efi/efi.c

   993	
   994	/*
   995	 * efi_mem_type - lookup memmap type for physical address
   996	 * @phys_addr: the physical address to lookup
   997	 *
   998	 * Search in the EFI memory map for the region covering @phys_addr.
   999	 * Returns the EFI memory type if the region was found in the memory
  1000	 * map, -EINVAL otherwise.
  1001	 */
  1002	int efi_mem_type(unsigned long phys_addr)
  1003	{
  1004		const efi_memory_desc_t md;
  1005	
  1006		if (!efi_enabled(EFI_MEMMAP) && !efi_enabled(EFI_PARAVIRT))
  1007			return -ENOTSUPP;
  1008	
> 1009		if (efi_mem_desc_lookup(phys_addr, &md))
  1010			return -EINVAL;
  1011	
  1012		return md.type;
  1013	}
  1014	

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