drivers/video/fbdev/geode/suspend_gx.c:30:9: sparse: sparse: incorrect type in argument 2 (different address spaces)

From: kernel test robot
Date: Tue Mar 09 2021 - 05:05:42 EST

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@xxxxxxxxx>


"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@xxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

---
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Attachment: .config.gz
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