drivers/video/fbdev/atmel_lcdfb.c:342:9: sparse: sparse: incorrect type in argument 1 (different address spaces)

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   6bc40e44f1ddef16a787f3501b97f1fff909177c
commit: 90db9dbedd26ce029f3a0f8d2cbd3a142f452408 kasan, powerpc: don't rename memintrinsics if compiler adds prefixes
date:   8 months ago
config: powerpc-randconfig-r132-20231117 (https://download.01.org/0day-ci/archive/20231118/202311180713.L5rLtmbc-lkp@xxxxxxxxx/config)
compiler: powerpc-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231118/202311180713.L5rLtmbc-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311180713.L5rLtmbc-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
   drivers/video/fbdev/atmel_lcdfb.c:334:27: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected char [noderef] __iomem *screen_base @@     got void * @@
   drivers/video/fbdev/atmel_lcdfb.c:334:27: sparse:     expected char [noderef] __iomem *screen_base
   drivers/video/fbdev/atmel_lcdfb.c:334:27: sparse:     got void *
   drivers/video/fbdev/atmel_lcdfb.c:342:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got char [noderef] __iomem *screen_base @@
   drivers/video/fbdev/atmel_lcdfb.c:342:9: sparse:     expected void const *
   drivers/video/fbdev/atmel_lcdfb.c:342:9: sparse:     got char [noderef] __iomem *screen_base
   drivers/video/fbdev/atmel_lcdfb.c:342:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got char [noderef] __iomem *screen_base @@
   drivers/video/fbdev/atmel_lcdfb.c:342:9: sparse:     expected void const *
   drivers/video/fbdev/atmel_lcdfb.c:342:9: sparse:     got char [noderef] __iomem *screen_base
>> drivers/video/fbdev/atmel_lcdfb.c:342:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *p @@     got char [noderef] __iomem *screen_base @@
   drivers/video/fbdev/atmel_lcdfb.c:342:9: sparse:     expected void *p
   drivers/video/fbdev/atmel_lcdfb.c:342:9: sparse:     got char [noderef] __iomem *screen_base
   drivers/video/fbdev/atmel_lcdfb.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/xarray.h, ...):
   include/linux/page-flags.h:246:46: sparse: sparse: self-comparison always evaluates to false
   drivers/video/fbdev/atmel_lcdfb.c:313:59: sparse: sparse: incorrect type in argument 3 (different address spaces) @@     expected void *cpu_addr @@     got char [noderef] __iomem *screen_base @@
   drivers/video/fbdev/atmel_lcdfb.c:313:59: sparse:     expected void *cpu_addr
   drivers/video/fbdev/atmel_lcdfb.c:313:59: sparse:     got char [noderef] __iomem *screen_base
   drivers/video/fbdev/atmel_lcdfb.c:313:59: sparse: sparse: incorrect type in argument 3 (different address spaces) @@     expected void *cpu_addr @@     got char [noderef] __iomem *screen_base @@
   drivers/video/fbdev/atmel_lcdfb.c:313:59: sparse:     expected void *cpu_addr
   drivers/video/fbdev/atmel_lcdfb.c:313:59: sparse:     got char [noderef] __iomem *screen_base
--
   drivers/mtd/nand/raw/hisi504_nand.c:362:26: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/mtd/nand/raw/hisi504_nand.c:367:26: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/mtd/nand/raw/hisi504_nand.c:465:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got void [noderef] __iomem *mmio @@
   drivers/mtd/nand/raw/hisi504_nand.c:465:17: sparse:     expected void const *
   drivers/mtd/nand/raw/hisi504_nand.c:465:17: sparse:     got void [noderef] __iomem *mmio
   drivers/mtd/nand/raw/hisi504_nand.c:465:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got void [noderef] __iomem *mmio @@
   drivers/mtd/nand/raw/hisi504_nand.c:465:17: sparse:     expected void const *
   drivers/mtd/nand/raw/hisi504_nand.c:465:17: sparse:     got void [noderef] __iomem *mmio
>> drivers/mtd/nand/raw/hisi504_nand.c:465:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *p @@     got void [noderef] __iomem *mmio @@
   drivers/mtd/nand/raw/hisi504_nand.c:465:17: sparse:     expected void *p
   drivers/mtd/nand/raw/hisi504_nand.c:465:17: sparse:     got void [noderef] __iomem *mmio
   drivers/mtd/nand/raw/hisi504_nand.c:477:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got void [noderef] __iomem *mmio @@
   drivers/mtd/nand/raw/hisi504_nand.c:477:17: sparse:     expected void const *
   drivers/mtd/nand/raw/hisi504_nand.c:477:17: sparse:     got void [noderef] __iomem *mmio
   drivers/mtd/nand/raw/hisi504_nand.c:477:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got void [noderef] __iomem *mmio @@
   drivers/mtd/nand/raw/hisi504_nand.c:477:17: sparse:     expected void const *
   drivers/mtd/nand/raw/hisi504_nand.c:477:17: sparse:     got void [noderef] __iomem *mmio
   drivers/mtd/nand/raw/hisi504_nand.c:477:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *p @@     got void [noderef] __iomem *mmio @@
   drivers/mtd/nand/raw/hisi504_nand.c:477:17: sparse:     expected void *p
   drivers/mtd/nand/raw/hisi504_nand.c:477:17: sparse:     got void [noderef] __iomem *mmio
   drivers/mtd/nand/raw/hisi504_nand.c:603:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got void [noderef] __iomem *mmio @@
   drivers/mtd/nand/raw/hisi504_nand.c:603:9: sparse:     expected void const *
   drivers/mtd/nand/raw/hisi504_nand.c:603:9: sparse:     got void [noderef] __iomem *mmio
   drivers/mtd/nand/raw/hisi504_nand.c:603:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got void [noderef] __iomem *mmio @@
   drivers/mtd/nand/raw/hisi504_nand.c:603:9: sparse:     expected void const *
   drivers/mtd/nand/raw/hisi504_nand.c:603:9: sparse:     got void [noderef] __iomem *mmio
   drivers/mtd/nand/raw/hisi504_nand.c:603:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *p @@     got void [noderef] __iomem *mmio @@
   drivers/mtd/nand/raw/hisi504_nand.c:603:9: sparse:     expected void *p
   drivers/mtd/nand/raw/hisi504_nand.c:603:9: sparse:     got void [noderef] __iomem *mmio
   drivers/mtd/nand/raw/hisi504_nand.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/xarray.h, ...):
   include/linux/page-flags.h:246:46: sparse: sparse: self-comparison always evaluates to false

vim +342 drivers/video/fbdev/atmel_lcdfb.c

14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  316  
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  317  /**
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  318   *	atmel_lcdfb_alloc_video_memory - Allocate framebuffer memory
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  319   *	@sinfo: the frame buffer to allocate memory for
1d01e83557105e drivers/video/atmel_lcdfb.c       Krzysztof Helt     2009-07-08  320   * 	
1d01e83557105e drivers/video/atmel_lcdfb.c       Krzysztof Helt     2009-07-08  321   * 	This function is called only from the atmel_lcdfb_probe()
1d01e83557105e drivers/video/atmel_lcdfb.c       Krzysztof Helt     2009-07-08  322   * 	so no locking by fb_info->mm_lock around smem_len setting is needed.
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  323   */
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  324  static int atmel_lcdfb_alloc_video_memory(struct atmel_lcdfb_info *sinfo)
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  325  {
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  326  	struct fb_info *info = sinfo->info;
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  327  	struct fb_var_screeninfo *var = &info->var;
ea757acad5a518 drivers/video/atmel_lcdfb.c       Haavard Skinnemoen 2008-08-12  328  	unsigned int smem_len;
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  329  
ea757acad5a518 drivers/video/atmel_lcdfb.c       Haavard Skinnemoen 2008-08-12  330  	smem_len = (var->xres_virtual * var->yres_virtual
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  331  		    * ((var->bits_per_pixel + 7) / 8));
ea757acad5a518 drivers/video/atmel_lcdfb.c       Haavard Skinnemoen 2008-08-12  332  	info->fix.smem_len = max(smem_len, sinfo->smem_len);
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  333  
f6e45661f9be54 drivers/video/fbdev/atmel_lcdfb.c Luis R. Rodriguez  2016-01-22  334  	info->screen_base = dma_alloc_wc(info->device, info->fix.smem_len,
f6e45661f9be54 drivers/video/fbdev/atmel_lcdfb.c Luis R. Rodriguez  2016-01-22  335  					 (dma_addr_t *)&info->fix.smem_start,
f6e45661f9be54 drivers/video/fbdev/atmel_lcdfb.c Luis R. Rodriguez  2016-01-22  336  					 GFP_KERNEL);
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  337  
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  338  	if (!info->screen_base) {
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  339  		return -ENOMEM;
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  340  	}
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  341  
01d3a5e7fab773 drivers/video/atmel_lcdfb.c       Haavard Skinnemoen 2008-04-28 @342  	memset(info->screen_base, 0, info->fix.smem_len);
01d3a5e7fab773 drivers/video/atmel_lcdfb.c       Haavard Skinnemoen 2008-04-28  343  
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  344  	return 0;
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  345  }
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  346  

:::::: The code at line 342 was first introduced by commit
:::::: 01d3a5e7fab7732cfc5d5d4533e9378ea435295a atmel_lcdfb: don't initialize a pre-allocated framebuffer

:::::: TO: Haavard Skinnemoen <hskinnemoen@xxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

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




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