arch/loongarch/mm/ioremap.c:9:21: sparse: void [noderef] __iomem *extern [addressable] [toplevel] early_ioremap( ... )

[kernel test robot <lkp@intel.com>]

:::::: 
:::::: Manual check reason: "low confidence static check warning: arch/loongarch/mm/ioremap.c:9:21: sparse:    void [noderef] __iomem *extern [addressable] [toplevel] early_ioremap( ... )"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Bibo Mao <maobibo@loongson.cn>
CC: Huacai Chen <chenhuacai@kernel.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   3ca112b71f35dd5d99fc4571a56b5fc6f0c15814
commit: c718a0bad75ccef117000223b00fd6a14f849135 LoongArch: Fix some build warnings with W=1
date:   7 weeks ago
:::::: branch date: 7 hours ago
:::::: commit date: 7 weeks ago
config: loongarch-randconfig-r132-20231107 (https://download.01.org/0day-ci/archive/20231111/202311111513.5vVouNcb-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231111/202311111513.5vVouNcb-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/r/202311111513.5vVouNcb-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   arch/loongarch/mm/ioremap.c:9:21: sparse: sparse: symbol 'early_ioremap' redeclared with different type (different address spaces):
>> arch/loongarch/mm/ioremap.c:9:21: sparse:    void [noderef] __iomem *extern [addressable] [toplevel] early_ioremap( ... )
   arch/loongarch/mm/ioremap.c: note: in included file:
   include/asm-generic/early_ioremap.h:13:13: sparse: note: previously declared as:
>> include/asm-generic/early_ioremap.h:13:13: sparse:    void *extern [addressable] [toplevel] early_ioremap( ... )
   arch/loongarch/mm/ioremap.c:14:13: sparse: sparse: symbol 'early_iounmap' redeclared with different type (incompatible argument 1 (different address spaces)):
>> arch/loongarch/mm/ioremap.c:14:13: sparse:    void extern [addressable] [toplevel] early_iounmap( ... )
   include/asm-generic/early_ioremap.h:20:13: sparse: note: previously declared as:
>> include/asm-generic/early_ioremap.h:20:13: sparse:    void extern [addressable] [toplevel] early_iounmap( ... )
   arch/loongarch/mm/ioremap.c:21:30: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected void * @@     got void [noderef] __iomem * @@
   arch/loongarch/mm/ioremap.c:21:30: sparse:     expected void *
   arch/loongarch/mm/ioremap.c:21:30: sparse:     got void [noderef] __iomem *
   arch/loongarch/mm/ioremap.c:27:30: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected void * @@     got void [noderef] __iomem * @@
   arch/loongarch/mm/ioremap.c:27:30: sparse:     expected void *
   arch/loongarch/mm/ioremap.c:27:30: sparse:     got void [noderef] __iomem *

vim +9 arch/loongarch/mm/ioremap.c

09cfefb7fa70c3 Huacai Chen 2022-05-31   8  
09cfefb7fa70c3 Huacai Chen 2022-05-31  @9  void __init __iomem *early_ioremap(u64 phys_addr, unsigned long size)
09cfefb7fa70c3 Huacai Chen 2022-05-31  10  {
09cfefb7fa70c3 Huacai Chen 2022-05-31  11  	return ((void __iomem *)TO_CACHE(phys_addr));
09cfefb7fa70c3 Huacai Chen 2022-05-31  12  }
09cfefb7fa70c3 Huacai Chen 2022-05-31  13  
09cfefb7fa70c3 Huacai Chen 2022-05-31 @14  void __init early_iounmap(void __iomem *addr, unsigned long size)
09cfefb7fa70c3 Huacai Chen 2022-05-31  15  {
09cfefb7fa70c3 Huacai Chen 2022-05-31  16  

:::::: The code at line 9 was first introduced by commit
:::::: 09cfefb7fa70c3af011b0db0a513fd80b2f18abc LoongArch: Add memory management

:::::: TO: Huacai Chen <chenhuacai@loongson.cn>
:::::: CC: Huacai Chen <chenhuacai@loongson.cn>

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