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Date:   Wed, 5 Aug 2020 18:51:16 +0800
From:   kernel test robot <lkp@...el.com>
To:     Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse:
 incorrect type in initializer (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4da9f3302615f4191814f826054846bf843e24fa
commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces
date:   7 weeks ago
config: arc-randconfig-s031-20200805 (attached as .config)
compiler: arc-elf-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.2-117-g8c7aee71-dirty
        git checkout 670d0a4b10704667765f7d18f7592993d02783aa
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>


sparse warnings: (new ones prefixed by >>)

   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:819:42: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:1094:5: sparse: sparse: symbol 'amdgpu_ttm_gart_bind' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __user *__p @@     got unsigned int [usertype] * @@
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse:     expected void const [noderef] __user *__p
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse:     got unsigned int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2353:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c: note: in included file (through include/linux/uaccess.h, include/linux/sched/task.h, include/linux/sched/signal.h, ...):
   arch/arc/include/asm/uaccess.h:619:33: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected unsigned char *d_char @@     got void [noderef] __user *to @@
   arch/arc/include/asm/uaccess.h:619:33: sparse:     expected unsigned char *d_char
   arch/arc/include/asm/uaccess.h:619:33: sparse:     got void [noderef] __user *to
--
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void [noderef] __user *__p @@     got unsigned int [usertype] * @@
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse:     expected void [noderef] __user *__p
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse:     got unsigned int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void [noderef] __user *__p @@     got unsigned int [usertype] * @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse:     expected void [noderef] __user *__p
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse:     got unsigned int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
--
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:138:17: sparse: sparse: incorrect type in initializer (different base types) @@     expected restricted __poll_t ( *poll )( ... ) @@     got unsigned int ( * )( ... ) @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:138:17: sparse:     expected restricted __poll_t ( *poll )( ... )
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:138:17: sparse:     got unsigned int ( * )( ... )
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse: sparse: cast removes address space '__user' of expression
>> drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void [noderef] __user *__p @@     got unsigned int [usertype] * @@
>> drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse:     expected void [noderef] __user *__p
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse:     got unsigned int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:257:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
>> drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __user *__p @@     got unsigned int [usertype] * @@
>> drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse:     expected void const [noderef] __user *__p
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse:     got unsigned int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:259:29: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void [noderef] __user *__p @@     got unsigned int [usertype] * @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse:     expected void [noderef] __user *__p
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse:     got unsigned int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:346:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __user *__p @@     got unsigned int [usertype] * @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse:     expected void const [noderef] __user *__p
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse:     got unsigned int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:400:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void [noderef] __user *__p @@     got unsigned int [usertype] * @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse:     expected void [noderef] __user *__p
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse:     got unsigned int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:457:21: sparse: sparse: cast removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:511:21: sparse: sparse: too many warnings
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:1256:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:1256:25: sparse:    struct dma_fence [noderef] __rcu *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:1256:25: sparse:    struct dma_fence *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:1257:17: sparse: sparse: incompatible types in comparison expression (different address spaces):
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:1257:17: sparse:    struct dma_fence [noderef] __rcu *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:1257:17: sparse:    struct dma_fence *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:1313:17: sparse: sparse: incompatible types in comparison expression (different address spaces):
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:1313:17: sparse:    struct dma_fence [noderef] __rcu *

vim +2353 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

d38ceaf99ed015f Alex Deucher    2015-04-20  2327  
50da51744f005f4 Tom St Denis    2018-05-09  2328  /**
50da51744f005f4 Tom St Denis    2018-05-09  2329   * amdgpu_ttm_vram_write - Linear write access to VRAM
50da51744f005f4 Tom St Denis    2018-05-09  2330   *
50da51744f005f4 Tom St Denis    2018-05-09  2331   * Accesses VRAM via MMIO for debugging purposes.
50da51744f005f4 Tom St Denis    2018-05-09  2332   */
08cab989f77582c Tom St Denis    2017-08-29  2333  static ssize_t amdgpu_ttm_vram_write(struct file *f, const char __user *buf,
08cab989f77582c Tom St Denis    2017-08-29  2334  				    size_t size, loff_t *pos)
08cab989f77582c Tom St Denis    2017-08-29  2335  {
08cab989f77582c Tom St Denis    2017-08-29  2336  	struct amdgpu_device *adev = file_inode(f)->i_private;
08cab989f77582c Tom St Denis    2017-08-29  2337  	ssize_t result = 0;
08cab989f77582c Tom St Denis    2017-08-29  2338  	int r;
08cab989f77582c Tom St Denis    2017-08-29  2339  
08cab989f77582c Tom St Denis    2017-08-29  2340  	if (size & 0x3 || *pos & 0x3)
08cab989f77582c Tom St Denis    2017-08-29  2341  		return -EINVAL;
08cab989f77582c Tom St Denis    2017-08-29  2342  
770d13b19fdf365 Christian König 2018-01-12  2343  	if (*pos >= adev->gmc.mc_vram_size)
08cab989f77582c Tom St Denis    2017-08-29  2344  		return -ENXIO;
08cab989f77582c Tom St Denis    2017-08-29  2345  
08cab989f77582c Tom St Denis    2017-08-29  2346  	while (size) {
08cab989f77582c Tom St Denis    2017-08-29  2347  		unsigned long flags;
08cab989f77582c Tom St Denis    2017-08-29  2348  		uint32_t value;
08cab989f77582c Tom St Denis    2017-08-29  2349  
770d13b19fdf365 Christian König 2018-01-12  2350  		if (*pos >= adev->gmc.mc_vram_size)
08cab989f77582c Tom St Denis    2017-08-29  2351  			return result;
08cab989f77582c Tom St Denis    2017-08-29  2352  
08cab989f77582c Tom St Denis    2017-08-29 @2353  		r = get_user(value, (uint32_t *)buf);
08cab989f77582c Tom St Denis    2017-08-29  2354  		if (r)
08cab989f77582c Tom St Denis    2017-08-29  2355  			return r;
08cab989f77582c Tom St Denis    2017-08-29  2356  
08cab989f77582c Tom St Denis    2017-08-29  2357  		spin_lock_irqsave(&adev->mmio_idx_lock, flags);
c30572814df55bc Tom St Denis    2017-09-13  2358  		WREG32_NO_KIQ(mmMM_INDEX, ((uint32_t)*pos) | 0x80000000);
c30572814df55bc Tom St Denis    2017-09-13  2359  		WREG32_NO_KIQ(mmMM_INDEX_HI, *pos >> 31);
c30572814df55bc Tom St Denis    2017-09-13  2360  		WREG32_NO_KIQ(mmMM_DATA, value);
08cab989f77582c Tom St Denis    2017-08-29  2361  		spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
08cab989f77582c Tom St Denis    2017-08-29  2362  
08cab989f77582c Tom St Denis    2017-08-29  2363  		result += 4;
08cab989f77582c Tom St Denis    2017-08-29  2364  		buf += 4;
08cab989f77582c Tom St Denis    2017-08-29  2365  		*pos += 4;
08cab989f77582c Tom St Denis    2017-08-29  2366  		size -= 4;
08cab989f77582c Tom St Denis    2017-08-29  2367  	}
08cab989f77582c Tom St Denis    2017-08-29  2368  
08cab989f77582c Tom St Denis    2017-08-29  2369  	return result;
08cab989f77582c Tom St Denis    2017-08-29  2370  }
08cab989f77582c Tom St Denis    2017-08-29  2371  

:::::: The code at line 2353 was first introduced by commit
:::::: 08cab989f77582cb19df12d4a75a91b68b0017f6 drm/amd/amdgpu: Add write() method to VRAM debugfs entry (v2)

:::::: TO: Tom St Denis <tom.stdenis@....com>
:::::: CC: Alex Deucher <alexander.deucher@....com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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