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Date:   Sat, 11 Nov 2023 15:36:55 +0800
From:   kernel test robot <lkp@...el.com>
To:     Huacai Chen <chenhuacai@...ngson.cn>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Jun Yi <yijun@...ngson.cn>
Subject: drivers/video/fbdev/atmel_lcdfb.c:362:20: sparse: sparse: incorrect
 type in argument 1 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   3ca112b71f35dd5d99fc4571a56b5fc6f0c15814
commit: a275a82dcd4024c75337db15d59ed039c31e21da LoongArch: Use alternative to optimize libraries
date:   11 months ago
config: loongarch-randconfig-r133-20231107 (https://download.01.org/0day-ci/archive/20231111/202311111512.IuUi0ceL-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231111/202311111512.IuUi0ceL-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/202311111512.IuUi0ceL-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   drivers/video/fbdev/atmel_lcdfb.c:354:27: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected char [noderef] __iomem *screen_base @@     got void * @@
   drivers/video/fbdev/atmel_lcdfb.c:354:27: sparse:     expected char [noderef] __iomem *screen_base
   drivers/video/fbdev/atmel_lcdfb.c:354:27: sparse:     got void *
>> drivers/video/fbdev/atmel_lcdfb.c:362:20: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *__s @@     got char [noderef] __iomem *screen_base @@
   drivers/video/fbdev/atmel_lcdfb.c:362:20: sparse:     expected void *__s
   drivers/video/fbdev/atmel_lcdfb.c:362:20: sparse:     got char [noderef] __iomem *screen_base
   drivers/video/fbdev/atmel_lcdfb.c:333:59: 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:333:59: sparse:     expected void *cpu_addr
   drivers/video/fbdev/atmel_lcdfb.c:333:59: sparse:     got char [noderef] __iomem *screen_base
   drivers/video/fbdev/atmel_lcdfb.c:333:59: 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:333:59: sparse:     expected void *cpu_addr
   drivers/video/fbdev/atmel_lcdfb.c:333:59: sparse:     got char [noderef] __iomem *screen_base

vim +362 drivers/video/fbdev/atmel_lcdfb.c

14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  336  
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  337  /**
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  338   *	atmel_lcdfb_alloc_video_memory - Allocate framebuffer memory
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  339   *	@sinfo: the frame buffer to allocate memory for
1d01e83557105e drivers/video/atmel_lcdfb.c       Krzysztof Helt     2009-07-08  340   * 	
1d01e83557105e drivers/video/atmel_lcdfb.c       Krzysztof Helt     2009-07-08  341   * 	This function is called only from the atmel_lcdfb_probe()
1d01e83557105e drivers/video/atmel_lcdfb.c       Krzysztof Helt     2009-07-08  342   * 	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  343   */
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  344  static int atmel_lcdfb_alloc_video_memory(struct atmel_lcdfb_info *sinfo)
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  345  {
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  346  	struct fb_info *info = sinfo->info;
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  347  	struct fb_var_screeninfo *var = &info->var;
ea757acad5a518 drivers/video/atmel_lcdfb.c       Haavard Skinnemoen 2008-08-12  348  	unsigned int smem_len;
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  349  
ea757acad5a518 drivers/video/atmel_lcdfb.c       Haavard Skinnemoen 2008-08-12  350  	smem_len = (var->xres_virtual * var->yres_virtual
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  351  		    * ((var->bits_per_pixel + 7) / 8));
ea757acad5a518 drivers/video/atmel_lcdfb.c       Haavard Skinnemoen 2008-08-12  352  	info->fix.smem_len = max(smem_len, sinfo->smem_len);
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  353  
f6e45661f9be54 drivers/video/fbdev/atmel_lcdfb.c Luis R. Rodriguez  2016-01-22  354  	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  355  					 (dma_addr_t *)&info->fix.smem_start,
f6e45661f9be54 drivers/video/fbdev/atmel_lcdfb.c Luis R. Rodriguez  2016-01-22  356  					 GFP_KERNEL);
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  357  
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  358  	if (!info->screen_base) {
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  359  		return -ENOMEM;
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  360  	}
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  361  
01d3a5e7fab773 drivers/video/atmel_lcdfb.c       Haavard Skinnemoen 2008-04-28 @362  	memset(info->screen_base, 0, info->fix.smem_len);
01d3a5e7fab773 drivers/video/atmel_lcdfb.c       Haavard Skinnemoen 2008-04-28  363  
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  364  	return 0;
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  365  }
14340586148e7c drivers/video/atmel_lcdfb.c       Nicolas Ferre      2007-05-10  366  

:::::: The code at line 362 was first introduced by commit
:::::: 01d3a5e7fab7732cfc5d5d4533e9378ea435295a atmel_lcdfb: don't initialize a pre-allocated framebuffer

:::::: TO: Haavard Skinnemoen <hskinnemoen@...el.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

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

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