linux-kernel - drivers/gpu/drm/sti/sti_mixer.c:145:58: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Message-ID: <202409160130.rrmzw6jd-lkp@intel.com>
Date: Mon, 16 Sep 2024 01:55:39 +0800
From: kernel test robot <lkp@...el.com>
To: Ville Syrjälä <ville.syrjala@...ux.intel.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: drivers/gpu/drm/sti/sti_mixer.c:145:58: sparse: sparse: incorrect
 type in argument 1 (different address spaces)

Hi Ville,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   98f7e32f20d28ec452afb208f9cffc08448a2652
commit: 74bde7581df3e18061119e1b27b63d0a9ea57b7a drm/sti: Allow build with COMPILE_TEST=y
date:   4 months ago
config: mips-randconfig-r132-20240915 (https://download.01.org/0day-ci/archive/20240916/202409160130.rrmzw6jd-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce: (https://download.01.org/0day-ci/archive/20240916/202409160130.rrmzw6jd-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/202409160130.rrmzw6jd-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/sti/sti_mixer.c:145:58: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *mem @@     got void * @@
   drivers/gpu/drm/sti/sti_mixer.c:145:58: sparse:     expected void const volatile [noderef] __iomem *mem
   drivers/gpu/drm/sti/sti_mixer.c:145:58: sparse:     got void *
   drivers/gpu/drm/sti/sti_mixer.c:168:38: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void *addr @@     got void [noderef] __iomem * @@
   drivers/gpu/drm/sti/sti_mixer.c:168:38: sparse:     expected void *addr
   drivers/gpu/drm/sti/sti_mixer.c:168:38: sparse:     got void [noderef] __iomem *

vim +145 drivers/gpu/drm/sti/sti_mixer.c

a5f81078a56c6a Vincent Abriou 2016-02-04  139  
a5f81078a56c6a Vincent Abriou 2016-02-04  140  static void mixer_dbg_mxn(struct seq_file *s, void *addr)
a5f81078a56c6a Vincent Abriou 2016-02-04  141  {
a5f81078a56c6a Vincent Abriou 2016-02-04  142  	int i;
a5f81078a56c6a Vincent Abriou 2016-02-04  143  
a5f81078a56c6a Vincent Abriou 2016-02-04  144  	for (i = 1; i < 8; i++)
a5f81078a56c6a Vincent Abriou 2016-02-04 @145  		seq_printf(s, "-0x%08X", (int)readl(addr + i * 4));
a5f81078a56c6a Vincent Abriou 2016-02-04  146  }
a5f81078a56c6a Vincent Abriou 2016-02-04  147  

:::::: The code at line 145 was first introduced by commit
:::::: a5f81078a56c6ab57b7db2402ac64c34338004c5 drm/sti: add debugfs entries for MIXER crtc

:::::: TO: Vincent Abriou <vincent.abriou@...com>
:::::: CC: Vincent Abriou <vincent.abriou@...com>

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