Hi Luc,

I love your patch! Perhaps something to improve:

[auto build test WARNING on next-20200626]
[cannot apply to linux/master linus/master v5.8-rc2 v5.8-rc1 v5.7 v5.8-rc3]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use  as documented in
https://git-scm.com/docs/git-format-patch]

url:    
https://github.com/0day-ci/linux/commits/Luc-Van-Oostenryck/sparse-use-static-inline-for-__chk_-user-io-_ptr/20200628-152401
base:    36e3135df4d426612fc77db26a312c2531108603
config: i386-randconfig-s002-20200629 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.2-3-gfa153962-dirty
        # save the attached .config to linux build tree
        make W=1 C= CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>


sparse warnings: (new ones prefixed by >>)

   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:818:42: sparse: sparse: cast removes 
address space '__iomem' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast 
removes address space '__user' of expression
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: incorrect 
>> type in argument 1 (different address spaces) @@     expected void const 
>> volatile [noderef] __user *ptr @@     got unsigned int [usertype] * @@
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse:     expected void 
>> const volatile [noderef] __user *ptr
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse:     got unsigned 
int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: 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: incorrect 
>> type in argument 1 (different address spaces) @@     expected void const 
>> volatile [noderef] __user *ptr @@     got unsigned int [usertype] * @@
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse:     expected void 
>> const volatile [noderef] __user *ptr
   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: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: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: incorrect 
type in argument 1 (different address spaces) @@     expected void const 
volatile [noderef] __user *ptr @@     got unsigned int [usertype] * @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse:     expected void 
const volatile [noderef] __user *ptr
   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_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:261:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast 
removes address space '__user' of expression
>> drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: 
>> incorrect type in argument 1 (different address spaces) @@     expected void 
>> const volatile [noderef] __user *ptr @@     got unsigned int [usertype] * @@
>> drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse:     expected 
>> void const volatile [noderef] __user *ptr
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse:     got unsigned 
int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: 
incorrect type in argument 1 (different address spaces) @@     expected void 
const volatile [noderef] __user *ptr @@     got unsigned int [usertype] * @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse:     expected 
void const volatile [noderef] __user *ptr
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse:     got unsigned 
int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: 
incorrect type in argument 1 (different address spaces) @@     expected void 
const volatile [noderef] __user *ptr @@     got unsigned int [usertype] * @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse:     expected 
void const volatile [noderef] __user *ptr
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse:     got unsigned 
int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: 
incorrect type in argument 1 (different address spaces) @@     expected void 
const volatile [noderef] __user *ptr @@     got unsigned int [usertype] * @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse:     expected 
void const volatile [noderef] __user *ptr
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse:     got unsigned 
int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: 
incorrect type in argument 1 (different address spaces) @@     expected void 
const volatile [noderef] __user *ptr @@     got unsigned int [usertype] * @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse:     expected 
void const volatile [noderef] __user *ptr
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse:     got unsigned 
int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: 
incorrect type in argument 1 (different address spaces) @@     expected void 
const volatile [noderef] __user *ptr @@     got unsigned int [usertype] * @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse:     expected 
void const volatile [noderef] __user *ptr
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse:     got unsigned 
int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: 
incorrect type in argument 1 (different address spaces) @@     expected void 
const volatile [noderef] __user *ptr @@     got unsigned int [usertype] * @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse:     expected 
void const volatile [noderef] __user *ptr
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse:     got unsigned 
int [usertype] *
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: sparse: cast 
removes address space '__user' of expression
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: sparse: 
incorrect type in argument 1 (different address spaces) @@     expected void 
const volatile [noderef] __user *ptr @@     got unsigned int [usertype] * @@
   drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse:     expected 
void const volatile [noderef] __user *ptr

vim +2388 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

d38ceaf99ed015 Alex Deucher    2015-04-20  2362  
50da51744f005f Tom St Denis    2018-05-09  2363  /**
50da51744f005f Tom St Denis    2018-05-09  2364   * amdgpu_ttm_vram_write - 
Linear write access to VRAM
50da51744f005f Tom St Denis    2018-05-09  2365   *
50da51744f005f Tom St Denis    2018-05-09  2366   * Accesses VRAM via MMIO for 
debugging purposes.
50da51744f005f Tom St Denis    2018-05-09  2367   */
08cab989f77582 Tom St Denis    2017-08-29  2368  static ssize_t 
amdgpu_ttm_vram_write(struct file *f, const char __user *buf,
08cab989f77582 Tom St Denis    2017-08-29  2369                                 
    size_t size, loff_t *pos)
08cab989f77582 Tom St Denis    2017-08-29  2370  {
08cab989f77582 Tom St Denis    2017-08-29  2371         struct amdgpu_device 
*adev = file_inode(f)->i_private;
08cab989f77582 Tom St Denis    2017-08-29  2372         ssize_t result = 0;
08cab989f77582 Tom St Denis    2017-08-29  2373         int r;
08cab989f77582 Tom St Denis    2017-08-29  2374  
08cab989f77582 Tom St Denis    2017-08-29  2375         if (size & 0x3 || *pos 
& 0x3)
08cab989f77582 Tom St Denis    2017-08-29  2376                 return -EINVAL;
08cab989f77582 Tom St Denis    2017-08-29  2377  
770d13b19fdf36 Christian König 2018-01-12  2378         if (*pos >= 
adev->gmc.mc_vram_size)
08cab989f77582 Tom St Denis    2017-08-29  2379                 return -ENXIO;
08cab989f77582 Tom St Denis    2017-08-29  2380  
08cab989f77582 Tom St Denis    2017-08-29  2381         while (size) {
08cab989f77582 Tom St Denis    2017-08-29  2382                 unsigned long 
flags;
08cab989f77582 Tom St Denis    2017-08-29  2383                 uint32_t value;
08cab989f77582 Tom St Denis    2017-08-29  2384  
770d13b19fdf36 Christian König 2018-01-12  2385                 if (*pos >= 
adev->gmc.mc_vram_size)
08cab989f77582 Tom St Denis    2017-08-29  2386                         return 
result;
08cab989f77582 Tom St Denis    2017-08-29  2387  
08cab989f77582 Tom St Denis    2017-08-29 @2388                 r = 
get_user(value, (uint32_t *)buf);
08cab989f77582 Tom St Denis    2017-08-29  2389                 if (r)
08cab989f77582 Tom St Denis    2017-08-29  2390                         return 
r;
08cab989f77582 Tom St Denis    2017-08-29  2391  
08cab989f77582 Tom St Denis    2017-08-29  2392                 
spin_lock_irqsave(&adev->mmio_idx_lock, flags);
c30572814df55b Tom St Denis    2017-09-13  2393                 
WREG32_NO_KIQ(mmMM_INDEX, ((uint32_t)*pos) | 0x80000000);
c30572814df55b Tom St Denis    2017-09-13  2394                 
WREG32_NO_KIQ(mmMM_INDEX_HI, *pos >> 31);
c30572814df55b Tom St Denis    2017-09-13  2395                 
WREG32_NO_KIQ(mmMM_DATA, value);
08cab989f77582 Tom St Denis    2017-08-29  2396                 
spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
08cab989f77582 Tom St Denis    2017-08-29  2397  
08cab989f77582 Tom St Denis    2017-08-29  2398                 result += 4;
08cab989f77582 Tom St Denis    2017-08-29  2399                 buf += 4;
08cab989f77582 Tom St Denis    2017-08-29  2400                 *pos += 4;
08cab989f77582 Tom St Denis    2017-08-29  2401                 size -= 4;
08cab989f77582 Tom St Denis    2017-08-29  2402         }
08cab989f77582 Tom St Denis    2017-08-29  2403  
08cab989f77582 Tom St Denis    2017-08-29  2404         return result;
08cab989f77582 Tom St Denis    2017-08-29  2405  }
08cab989f77582 Tom St Denis    2017-08-29  2406  

---
0-DAY CI Kernel Test Service, Intel Corporation
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