Re: [PATCH 2/2] efi: earlycon: Add support for generic framebuffers and move to fbdev subsystem

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Hi Markuss,

I love your patch! Yet something to improve:

[auto build test ERROR on tty/tty-testing]
[also build test ERROR on efi/next staging/staging-testing usb/usb-testing linus/master v5.19-rc8 next-20220728]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Markuss-Broks/Add-generic-framebuffer-support-to-EFI-earlycon-driver/20220728-223117
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
config: ia64-allmodconfig (https://download.01.org/0day-ci/archive/20220729/202207290523.Br8Zr7V3-lkp@xxxxxxxxx/config)
compiler: ia64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/b6a59e731326deaa78f7dcbd97520e2eed2bc707
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Markuss-Broks/Add-generic-framebuffer-support-to-EFI-earlycon-driver/20220728-223117
        git checkout b6a59e731326deaa78f7dcbd97520e2eed2bc707
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/video/fbdev/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All error/warnings (new ones prefixed by >>):

   drivers/video/fbdev/earlycon.c: In function 'simplefb_earlycon_map':
>> drivers/video/fbdev/earlycon.c:65:16: error: implicit declaration of function 'early_memremap_prot'; did you mean 'early_memremap'? [-Werror=implicit-function-declaration]
      65 |         return early_memremap_prot(info.phys_base + start, len, pgprot_val(fb_prot));
         |                ^~~~~~~~~~~~~~~~~~~
         |                early_memremap
>> drivers/video/fbdev/earlycon.c:65:16: warning: returning 'int' from a function with return type 'void *' makes pointer from integer without a cast [-Wint-conversion]
      65 |         return early_memremap_prot(info.phys_base + start, len, pgprot_val(fb_prot));
         |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors
   {standard input}: Assembler messages:
   {standard input}:210: Error: Register number out of range 0..0
   {standard input}:211: Error: Register number out of range 0..0
   {standard input}:211: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:211: Warning: Only the first path encountering the conflict is reported
   {standard input}:210: Warning: This is the location of the conflicting usage
   {standard input}:212: Error: Register number out of range 0..0
   {standard input}:212: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:212: Warning: Only the first path encountering the conflict is reported
   {standard input}:210: Warning: This is the location of the conflicting usage
   {standard input}:212: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:212: Warning: Only the first path encountering the conflict is reported
   {standard input}:211: Warning: This is the location of the conflicting usage
   {standard input}:214: Error: Register number out of range 0..0
   {standard input}:214: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:214: Warning: Only the first path encountering the conflict is reported
   {standard input}:210: Warning: This is the location of the conflicting usage
   {standard input}:214: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:214: Warning: Only the first path encountering the conflict is reported
   {standard input}:211: Warning: This is the location of the conflicting usage
   {standard input}:214: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:214: Warning: Only the first path encountering the conflict is reported
   {standard input}:212: Warning: This is the location of the conflicting usage
   {standard input}:215: Error: Register number out of range 0..0
   {standard input}:215: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:215: Warning: Only the first path encountering the conflict is reported
   {standard input}:210: Warning: This is the location of the conflicting usage
   {standard input}:215: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:215: Warning: Only the first path encountering the conflict is reported
   {standard input}:211: Warning: This is the location of the conflicting usage
   {standard input}:215: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:215: Warning: Only the first path encountering the conflict is reported
   {standard input}:212: Warning: This is the location of the conflicting usage
   {standard input}:215: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:215: Warning: Only the first path encountering the conflict is reported
   {standard input}:214: Warning: This is the location of the conflicting usage
   {standard input}:216: Error: Register number out of range 0..0
   {standard input}:216: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:216: Warning: Only the first path encountering the conflict is reported
   {standard input}:210: Warning: This is the location of the conflicting usage
   {standard input}:216: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:216: Warning: Only the first path encountering the conflict is reported
   {standard input}:211: Warning: This is the location of the conflicting usage
   {standard input}:216: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:216: Warning: Only the first path encountering the conflict is reported
   {standard input}:212: Warning: This is the location of the conflicting usage
   {standard input}:216: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:216: Warning: Only the first path encountering the conflict is reported
   {standard input}:214: Warning: This is the location of the conflicting usage
   {standard input}:216: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 35
   {standard input}:216: Warning: Only the first path encountering the conflict is reported
   {standard input}:215: Warning: This is the location of the conflicting usage
   {standard input}:220: Error: Register number out of range 0..0
   {standard input}:376: Error: Register number out of range 0..1
   {standard input}:376: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 37
   {standard input}:376: Warning: Only the first path encountering the conflict is reported
   {standard input}:374: Warning: This is the location of the conflicting usage
   {standard input}:378: Error: Register number out of range 0..1
   {standard input}:378: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 37
   {standard input}:378: Warning: Only the first path encountering the conflict is reported
   {standard input}:374: Warning: This is the location of the conflicting usage
   {standard input}:378: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 37
   {standard input}:378: Warning: Only the first path encountering the conflict is reported
   {standard input}:376: Warning: This is the location of the conflicting usage
   {standard input}:379: Error: Register number out of range 0..1
   {standard input}:379: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 37
   {standard input}:379: Warning: Only the first path encountering the conflict is reported
   {standard input}:374: Warning: This is the location of the conflicting usage
   {standard input}:379: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 37
   {standard input}:379: Warning: Only the first path encountering the conflict is reported
   {standard input}:376: Warning: This is the location of the conflicting usage
   {standard input}:379: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 37
   {standard input}:379: Warning: Only the first path encountering the conflict is reported
   {standard input}:378: Warning: This is the location of the conflicting usage
   {standard input}:380: Error: Register number out of range 0..1
   {standard input}:380: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 37
   {standard input}:380: Warning: Only the first path encountering the conflict is reported
   {standard input}:374: Warning: This is the location of the conflicting usage
   {standard input}:380: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 37
   {standard input}:380: Warning: Only the first path encountering the conflict is reported
   {standard input}:376: Warning: This is the location of the conflicting usage
   {standard input}:380: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 37
   {standard input}:380: Warning: Only the first path encountering the conflict is reported
   {standard input}:378: Warning: This is the location of the conflicting usage
   {standard input}:380: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 37
   {standard input}:380: Warning: Only the first path encountering the conflict is reported
   {standard input}:379: Warning: This is the location of the conflicting usage
   {standard input}:383: Error: Register number out of range 0..1
   {standard input}:384: Error: Register number out of range 0..1
   {standard input}:384: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 37
   {standard input}:384: Warning: Only the first path encountering the conflict is reported
   {standard input}:383: Warning: This is the location of the conflicting usage


vim +65 drivers/video/fbdev/earlycon.c

    56	
    57	static __ref void *simplefb_earlycon_map(unsigned long start, unsigned long len)
    58	{
    59		pgprot_t fb_prot;
    60	
    61		if (info.virt_base)
    62			return info.virt_base + start;
    63	
    64		fb_prot = PAGE_KERNEL;
  > 65		return early_memremap_prot(info.phys_base + start, len, pgprot_val(fb_prot));
    66	}
    67	

-- 
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https://01.org/lkp



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