Re: [PATCH 6/6] drm/msm: Implement fbdev emulation as in-kernel client

[kernel test robot <lkp@intel.com>]

Hi Thomas,

I love your patch! Yet something to improve:

[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on linus/master v6.3-rc4]
[cannot apply to next-20230330]
[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/Thomas-Zimmermann/drm-msm-Clear-aperture-ownership-outside-of-fbdev-code/20230330-154729
base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link:    https://lore.kernel.org/r/20230330074150.7637-7-tzimmermann%40suse.de
patch subject: [PATCH 6/6] drm/msm: Implement fbdev emulation as in-kernel client
config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20230330/202303301856.zSmpwZjj-lkp@intel.com/config)
compiler: sparc64-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/ec39cb11cf72fb01ada6fe51c7c572a31dcc805d
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Thomas-Zimmermann/drm-msm-Clear-aperture-ownership-outside-of-fbdev-code/20230330-154729
        git checkout ec39cb11cf72fb01ada6fe51c7c572a31dcc805d
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc SHELL=/bin/bash drivers/gpu/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303301856.zSmpwZjj-lkp@intel.com/

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

   drivers/gpu/drm/msm/msm_io_utils.c: In function '_msm_ioremap':
>> drivers/gpu/drm/msm/msm_io_utils.c:72:15: error: implicit declaration of function 'devm_ioremap'; did you mean '_msm_ioremap'? [-Werror=implicit-function-declaration]
      72 |         ptr = devm_ioremap(&pdev->dev, res->start, size);
         |               ^~~~~~~~~~~~
         |               _msm_ioremap
>> drivers/gpu/drm/msm/msm_io_utils.c:72:13: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
      72 |         ptr = devm_ioremap(&pdev->dev, res->start, size);
         |             ^
   cc1: some warnings being treated as errors


vim +72 drivers/gpu/drm/msm/msm_io_utils.c

d89e5028346bd80 Dmitry Baryshkov 2022-01-20  51  
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  52  static void __iomem *_msm_ioremap(struct platform_device *pdev, const char *name,
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  53  				  bool quiet, phys_addr_t *psize)
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  54  {
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  55  	struct resource *res;
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  56  	unsigned long size;
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  57  	void __iomem *ptr;
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  58  
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  59  	if (name)
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  60  		res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  61  	else
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  62  		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  63  
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  64  	if (!res) {
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  65  		if (!quiet)
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  66  			DRM_DEV_ERROR(&pdev->dev, "failed to get memory resource: %s\n", name);
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  67  		return ERR_PTR(-EINVAL);
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  68  	}
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  69  
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  70  	size = resource_size(res);
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  71  
d89e5028346bd80 Dmitry Baryshkov 2022-01-20 @72  	ptr = devm_ioremap(&pdev->dev, res->start, size);
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  73  	if (!ptr) {
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  74  		if (!quiet)
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  75  			DRM_DEV_ERROR(&pdev->dev, "failed to ioremap: %s\n", name);
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  76  		return ERR_PTR(-ENOMEM);
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  77  	}
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  78  
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  79  	if (psize)
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  80  		*psize = size;
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  81  
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  82  	return ptr;
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  83  }
d89e5028346bd80 Dmitry Baryshkov 2022-01-20  84  

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