[android-common:android16-6.12-2026-09 1/1] drivers/vfio/platform/vfio_platform_common.c:778:31: sparse: sparse: incorrect type in return expression (different address spaces)

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

tree:   https://android.googlesource.com/kernel/common android16-6.12-2026-09
head:   c0f000c5d6675d24f3ac8c0aa429fe8fad9e5d7a
commit: 47f17fcb3a7828602729e173d05778d160df4026 [1/1] ANDROID: vfio/platform: Expose reset handler registration
config: arm64-randconfig-r2310-20261107 (https://download.01.org/0day-ci/archive/20261107/202611070532.90M8GCcp-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 7.5.0
sparse: v0.6.5-rc1-21-g84ec0658
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261107/202611070532.90M8GCcp-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/202611070532.90M8GCcp-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/vfio/platform/vfio_platform_common.c:778:31: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected void [noderef] __iomem * @@     got void * @@
   drivers/vfio/platform/vfio_platform_common.c:778:31: sparse:     expected void [noderef] __iomem *
   drivers/vfio/platform/vfio_platform_common.c:778:31: sparse:     got void *
   drivers/vfio/platform/vfio_platform_common.c:782:31: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected void [noderef] __iomem * @@     got void * @@
   drivers/vfio/platform/vfio_platform_common.c:782:31: sparse:     expected void [noderef] __iomem *
   drivers/vfio/platform/vfio_platform_common.c:782:31: sparse:     got void *
   drivers/vfio/platform/vfio_platform_common.c:787:39: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected void [noderef] __iomem * @@     got void * @@
   drivers/vfio/platform/vfio_platform_common.c:787:39: sparse:     expected void [noderef] __iomem *
   drivers/vfio/platform/vfio_platform_common.c:787:39: sparse:     got void *

vim +778 drivers/vfio/platform/vfio_platform_common.c

   769	
   770	void __iomem *vfio_platform_region_ioaddr(struct device *dev,
   771						  unsigned int index,
   772						  resource_size_t *size)
   773	{
   774		struct vfio_platform_device *vdev = dev_get_drvdata(dev);
   775		struct vfio_platform_region *reg;
   776	
   777		if (!vdev || index >= vdev->num_regions)
 > 778			return ERR_PTR(-EINVAL);
   779	
   780		reg = &vdev->regions[index];
   781		if (!(reg->type & VFIO_PLATFORM_REGION_TYPE_MMIO))
   782			return ERR_PTR(-EINVAL);
   783	
   784		if (!reg->ioaddr) {
   785			reg->ioaddr = ioremap(reg->addr, reg->size);
   786			if (!reg->ioaddr)
   787				return ERR_PTR(-ENOMEM);
   788		}
   789	
   790		if (size)
   791			*size = reg->size;
   792	
   793		return reg->ioaddr;
   794	}
   795	EXPORT_SYMBOL_GPL(vfio_platform_region_ioaddr);
   796	

--
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