linux-kernel - include/linux/device.h:381:23: sparse: sparse: incorrect type in return expression (different address spaces)

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Message-ID: <202411261939.0W2NYIG0-lkp@intel.com>
Date: Tue, 26 Nov 2024 19:34:41 +0800
From: kernel test robot <lkp@...el.com>
To: Serge Semin <fancer.lancer@...il.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: include/linux/device.h:381:23: sparse: sparse: incorrect type in
 return expression (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   7eef7e306d3c40a0c5b9ff6adc9b273cc894dbd5
commit: f6bb3e9d98c2e8d70587d5ddaf9426ef30d7865c net: pcs: xpcs: Add Synopsys DW xPCS platform device driver
date:   5 months ago
config: s390-randconfig-r132-20241126 (https://download.01.org/0day-ci/archive/20241126/202411261939.0W2NYIG0-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 14.2.0
reproduce: (https://download.01.org/0day-ci/archive/20241126/202411261939.0W2NYIG0-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411261939.0W2NYIG0-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   drivers/net/pcs/pcs-xpcs-plat.c: note: in included file:
>> include/linux/device.h:381:23: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected void [noderef] __iomem * @@     got void * @@
   include/linux/device.h:381:23: sparse:     expected void [noderef] __iomem *
   include/linux/device.h:381:23: sparse:     got void *

vim +381 include/linux/device.h

da7c07b1083809 Mark Brown 2023-07-18  376  
da7c07b1083809 Mark Brown 2023-07-18  377  static inline
da7c07b1083809 Mark Brown 2023-07-18  378  void __iomem *devm_ioremap_resource(struct device *dev,
da7c07b1083809 Mark Brown 2023-07-18  379  				    const struct resource *res)
da7c07b1083809 Mark Brown 2023-07-18  380  {
da7c07b1083809 Mark Brown 2023-07-18 @381  	return ERR_PTR(-EINVAL);
da7c07b1083809 Mark Brown 2023-07-18  382  }
da7c07b1083809 Mark Brown 2023-07-18  383  

:::::: The code at line 381 was first introduced by commit
:::::: da7c07b1083809888c82522e74370f962fb7685e driver core: Provide stubs for !IOMEM builds

:::::: TO: Mark Brown <broonie@...nel.org>
:::::: CC: Mark Brown <broonie@...nel.org>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki