linux-kernel - drivers/gpu/drm/sti/sti_mixer.c:145:47: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Message-ID: <202306271413.5vS46KMc-lkp@intel.com>
Date:   Tue, 27 Jun 2023 14:47:53 +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
Subject: drivers/gpu/drm/sti/sti_mixer.c:145:47: sparse: sparse: incorrect
 type in argument 1 (different address spaces)

Hi Arnd,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1ef6663a587ba3e57dc5065a477db1c64481eedd
commit: 09f6b27d5ddd9ad0ec096d1b0f8decdacc70f0f8 ARM: dove: multiplatform support
date:   1 year, 3 months ago
config: arm-randconfig-r071-20230627 (https://download.01.org/0day-ci/archive/20230627/202306271413.5vS46KMc-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230627/202306271413.5vS46KMc-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/202306271413.5vS46KMc-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/sti/sti_mixer.c:145:47: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   drivers/gpu/drm/sti/sti_mixer.c:145:47: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/gpu/drm/sti/sti_mixer.c:145:47: 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  
a5f81078a56c6a Vincent Abriou 2016-02-04  148  static int mixer_dbg_show(struct seq_file *s, void *arg)
a5f81078a56c6a Vincent Abriou 2016-02-04  149  {
a5f81078a56c6a Vincent Abriou 2016-02-04  150  	struct drm_info_node *node = s->private;
a5f81078a56c6a Vincent Abriou 2016-02-04  151  	struct sti_mixer *mixer = (struct sti_mixer *)node->info_ent->data;
a5f81078a56c6a Vincent Abriou 2016-02-04  152  
a5f81078a56c6a Vincent Abriou 2016-02-04  153  	seq_printf(s, "%s: (vaddr = 0x%p)",
a5f81078a56c6a Vincent Abriou 2016-02-04  154  		   sti_mixer_to_str(mixer), mixer->regs);
a5f81078a56c6a Vincent Abriou 2016-02-04  155  
a5f81078a56c6a Vincent Abriou 2016-02-04  156  	DBGFS_DUMP(GAM_MIXER_CTL);
a5f81078a56c6a Vincent Abriou 2016-02-04  157  	mixer_dbg_ctl(s, sti_mixer_reg_read(mixer, GAM_MIXER_CTL));
a5f81078a56c6a Vincent Abriou 2016-02-04  158  	DBGFS_DUMP(GAM_MIXER_BKC);
a5f81078a56c6a Vincent Abriou 2016-02-04  159  	DBGFS_DUMP(GAM_MIXER_BCO);
a5f81078a56c6a Vincent Abriou 2016-02-04  160  	DBGFS_DUMP(GAM_MIXER_BCS);
a5f81078a56c6a Vincent Abriou 2016-02-04  161  	DBGFS_DUMP(GAM_MIXER_AVO);
a5f81078a56c6a Vincent Abriou 2016-02-04  162  	DBGFS_DUMP(GAM_MIXER_AVS);
a5f81078a56c6a Vincent Abriou 2016-02-04  163  	DBGFS_DUMP(GAM_MIXER_CRB);
a5f81078a56c6a Vincent Abriou 2016-02-04  164  	mixer_dbg_crb(s, sti_mixer_reg_read(mixer, GAM_MIXER_CRB));
a5f81078a56c6a Vincent Abriou 2016-02-04  165  	DBGFS_DUMP(GAM_MIXER_ACT);
a5f81078a56c6a Vincent Abriou 2016-02-04  166  	DBGFS_DUMP(GAM_MIXER_MBP);
a5f81078a56c6a Vincent Abriou 2016-02-04  167  	DBGFS_DUMP(GAM_MIXER_MX0);
a5f81078a56c6a Vincent Abriou 2016-02-04 @168  	mixer_dbg_mxn(s, mixer->regs + GAM_MIXER_MX0);
e9635133d47b9c Markus Elfring 2017-05-05  169  	seq_putc(s, '\n');
a5f81078a56c6a Vincent Abriou 2016-02-04  170  	return 0;
a5f81078a56c6a Vincent Abriou 2016-02-04  171  }
a5f81078a56c6a Vincent Abriou 2016-02-04  172  

:::::: 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>

-- 
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https://github.com/intel/lkp-tests/wiki