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Message-ID: <202103091802.xrRb5Vkw-lkp@intel.com>
Date:   Tue, 9 Mar 2021 18:04:10 +0800
From:   kernel test robot <lkp@...el.com>
To:     Vaibhav Gupta <vaibhavgupta40@...il.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: drivers/video/fbdev/geode/suspend_gx.c:30:9: 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:   144c79ef33536b4ecb4951e07dbc1f2b7fa99d32
commit: fa41f2877429646ce062a034a6d5bfc4f8f04b8c fbdev: gxfb: use generic power management
date:   6 months ago
config: x86_64-randconfig-s031-20210309 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-262-g5e674421-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa41f2877429646ce062a034a6d5bfc4f8f04b8c
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout fa41f2877429646ce062a034a6d5bfc4f8f04b8c
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 

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/video/fbdev/geode/suspend_gx.c:30:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const *from @@     got void [noderef] __iomem *gp_regs @@
   drivers/video/fbdev/geode/suspend_gx.c:30:9: sparse:     expected void const *from
   drivers/video/fbdev/geode/suspend_gx.c:30:9: sparse:     got void [noderef] __iomem *gp_regs
>> drivers/video/fbdev/geode/suspend_gx.c:31:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const *from @@     got void [noderef] __iomem *dc_regs @@
   drivers/video/fbdev/geode/suspend_gx.c:31:9: sparse:     expected void const *from
   drivers/video/fbdev/geode/suspend_gx.c:31:9: sparse:     got void [noderef] __iomem *dc_regs
>> drivers/video/fbdev/geode/suspend_gx.c:32:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const *from @@     got void [noderef] __iomem *vid_regs @@
   drivers/video/fbdev/geode/suspend_gx.c:32:9: sparse:     expected void const *from
   drivers/video/fbdev/geode/suspend_gx.c:32:9: sparse:     got void [noderef] __iomem *vid_regs
>> drivers/video/fbdev/geode/suspend_gx.c:33:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const *from @@     got void [noderef] __iomem * @@
   drivers/video/fbdev/geode/suspend_gx.c:33:9: sparse:     expected void const *from
   drivers/video/fbdev/geode/suspend_gx.c:33:9: sparse:     got void [noderef] __iomem *

vim +30 drivers/video/fbdev/geode/suspend_gx.c

46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  13  
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  14  static void gx_save_regs(struct gxfb_par *par)
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  15  {
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  16  	int i;
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  17  
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  18  	/* wait for the BLT engine to stop being busy */
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  19  	do {
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  20  		i = read_gp(par, GP_BLT_STATUS);
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  21  	} while (i & (GP_BLT_STATUS_BLT_PENDING | GP_BLT_STATUS_BLT_BUSY));
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  22  
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  23  	/* save MSRs */
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  24  	rdmsrl(MSR_GX_MSR_PADSEL, par->msr.padsel);
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  25  	rdmsrl(MSR_GLCP_DOTPLL, par->msr.dotpll);
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  26  
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  27  	write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  28  
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  29  	/* save registers */
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28 @30  	memcpy(par->gp, par->gp_regs, sizeof(par->gp));
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28 @31  	memcpy(par->dc, par->dc_regs, sizeof(par->dc));
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28 @32  	memcpy(par->vp, par->vid_regs, sizeof(par->vp));
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28 @33  	memcpy(par->fp, par->vid_regs + VP_FP_START, sizeof(par->fp));
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  34  
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  35  	/* save the palette */
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  36  	write_dc(par, DC_PAL_ADDRESS, 0);
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  37  	for (i = 0; i < ARRAY_SIZE(par->pal); i++)
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  38  		par->pal[i] = read_dc(par, DC_PAL_DATA);
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  39  }
46fb6f110dfc3f drivers/video/geode/suspend_gx.c Andres Salomon 2008-04-28  40  

:::::: The code at line 30 was first introduced by commit
:::::: 46fb6f110dfc3fc99f44cf701f66ea3e790b6a81 gxfb: add power management functionality

:::::: TO: Andres Salomon <dilinger@...ued.net>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

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

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