linux-kernel - drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:105:58: sparse: sparse: incorrect type in argument 2 (different address spaces)

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Message-ID: <202512131838.lGPe9MHr-lkp@intel.com>
Date: Sat, 13 Dec 2025 18:23:04 +0800
From: kernel test robot <lkp@...el.com>
To: Arnd Bergmann <arnd@...db.de>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Johannes Berg <johannes.berg@...el.com>
Subject: drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:105:58: sparse:
 sparse: incorrect type in argument 2 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a859eca0e4cc96f63ff125dbe5388d961558b0e9
commit: b8c9c3b822fe8e033b9802516f6466099d915488 um: stop using PCI port I/O
date:   6 months ago
config: um-randconfig-r121-20251213 (https://download.01.org/0day-ci/archive/20251213/202512131838.lGPe9MHr-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/20251213/202512131838.lGPe9MHr-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/202512131838.lGPe9MHr-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:105:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:105:58: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:105:58: sparse:     got void *
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:111:58: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:111:58: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:111:58: sparse:     got void *
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:158:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void *[assigned] emap @@
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:158:25: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:158:25: sparse:     got void *[assigned] emap
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:175:19: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void *map @@     got void [noderef] __iomem * @@
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:175:19: sparse:     expected void *map
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:175:19: sparse:     got void [noderef] __iomem *
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:228:28: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected void [noderef] __iomem * @@     got void *map @@
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:228:28: sparse:     expected void [noderef] __iomem *
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:228:28: sparse:     got void *map
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:237:28: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected void [noderef] __iomem * @@     got void *map @@
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:237:28: sparse:     expected void [noderef] __iomem *
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:237:28: sparse:     got void *map
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:244:21: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void [noderef] __iomem *map @@     got void *map @@
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:244:21: sparse:     expected void [noderef] __iomem *map
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:244:21: sparse:     got void *map
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:333:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void *[assigned] map @@
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:333:25: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c:333:25: sparse:     got void *[assigned] map

vim +105 drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c

07bbc1c5f49b64 Ben Skeggs 2017-11-01  101  
be55287aa5ba68 Ben Skeggs 2017-11-01  102  static void
be55287aa5ba68 Ben Skeggs 2017-11-01  103  nv50_instobj_wr32(struct nvkm_memory *memory, u64 offset, u32 data)
be55287aa5ba68 Ben Skeggs 2017-11-01  104  {
be55287aa5ba68 Ben Skeggs 2017-11-01 @105  	iowrite32_native(data, nv50_instobj(memory)->map + offset);
be55287aa5ba68 Ben Skeggs 2017-11-01  106  }
be55287aa5ba68 Ben Skeggs 2017-11-01  107  

:::::: The code at line 105 was first introduced by commit
:::::: be55287aa5ba6895e9d4d3ed2f08a1be7a065957 drm/nouveau/imem/nv50: embed nvkm_instobj directly into nv04_instobj

:::::: TO: Ben Skeggs <bskeggs@...hat.com>
:::::: CC: Ben Skeggs <bskeggs@...hat.com>

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