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* [linux-next:master 9419/10007] drivers/mtd/nand/raw/arasan-nand-controller.c:1453:33: warning: shift count >= width of type
@ 2021-06-16 10:33 kernel test robot
  2021-06-18  7:46 ` Miquel Raynal
  0 siblings, 1 reply; 3+ messages in thread
From: kernel test robot @ 2021-06-16 10:33 UTC (permalink / raw)
  To: Miquel Raynal; +Cc: kbuild-all, clang-built-linux, Linux Memory Management List

[-- Attachment #1: Type: text/plain, Size: 9676 bytes --]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   19ae1f2bd9c091059f80646604ccef8a1e614f57
commit: 236fd3e0427070413e7059dc3c52c3f9c89f7cc0 [9419/10007] Merge remote-tracking branch 'nand/nand/next'
config: riscv-randconfig-r013-20210615 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 64720f57bea6a6bf033feef4a5751ab9c0c3b401)
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
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=236fd3e0427070413e7059dc3c52c3f9c89f7cc0
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 236fd3e0427070413e7059dc3c52c3f9c89f7cc0
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   In file included from drivers/mtd/nand/raw/arasan-nand-controller.c:17:
   In file included from include/linux/dma-mapping.h:10:
   In file included from include/linux/scatterlist.h:8:
   In file included from include/linux/mm.h:33:
   In file included from include/linux/pgtable.h:6:
   arch/riscv/include/asm/pgtable.h:521:9: error: implicit declaration of function 'pfn_pmd' [-Werror,-Wimplicit-function-declaration]
           return pfn_pmd(page_to_pfn(page), prot);
                  ^
   arch/riscv/include/asm/pgtable.h:521:9: note: did you mean 'pfn_pgd'?
   arch/riscv/include/asm/pgtable.h:222:21: note: 'pfn_pgd' declared here
   static inline pgd_t pfn_pgd(unsigned long pfn, pgprot_t prot)
                       ^
   arch/riscv/include/asm/pgtable.h:521:17: error: implicit declaration of function 'page_to_section' [-Werror,-Wimplicit-function-declaration]
           return pfn_pmd(page_to_pfn(page), prot);
                          ^
   include/asm-generic/memory_model.h:81:21: note: expanded from macro 'page_to_pfn'
   #define page_to_pfn __page_to_pfn
                       ^
   include/asm-generic/memory_model.h:64:14: note: expanded from macro '__page_to_pfn'
           int __sec = page_to_section(__pg);                      \
                       ^
   arch/riscv/include/asm/pgtable.h:521:17: note: did you mean '__nr_to_section'?
   include/asm-generic/memory_model.h:81:21: note: expanded from macro 'page_to_pfn'
   #define page_to_pfn __page_to_pfn
                       ^
   include/asm-generic/memory_model.h:64:14: note: expanded from macro '__page_to_pfn'
           int __sec = page_to_section(__pg);                      \
                       ^
   include/linux/mmzone.h:1314:35: note: '__nr_to_section' declared here
   static inline struct mem_section *__nr_to_section(unsigned long nr)
                                     ^
   In file included from drivers/mtd/nand/raw/arasan-nand-controller.c:17:
   In file included from include/linux/dma-mapping.h:10:
   In file included from include/linux/scatterlist.h:8:
   In file included from include/linux/mm.h:33:
   In file included from include/linux/pgtable.h:6:
   arch/riscv/include/asm/pgtable.h:521:9: error: returning 'int' from a function with incompatible result type 'pmd_t'
           return pfn_pmd(page_to_pfn(page), prot);
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/mtd/nand/raw/arasan-nand-controller.c:17:
   In file included from include/linux/dma-mapping.h:10:
   In file included from include/linux/scatterlist.h:8:
   include/linux/mm.h:1552:29: error: static declaration of 'page_to_section' follows non-static declaration
   static inline unsigned long page_to_section(const struct page *page)
                               ^
   arch/riscv/include/asm/pgtable.h:521:17: note: previous implicit declaration is here
           return pfn_pmd(page_to_pfn(page), prot);
                          ^
   include/asm-generic/memory_model.h:81:21: note: expanded from macro 'page_to_pfn'
   #define page_to_pfn __page_to_pfn
                       ^
   include/asm-generic/memory_model.h:64:14: note: expanded from macro '__page_to_pfn'
           int __sec = page_to_section(__pg);                      \
                       ^
>> drivers/mtd/nand/raw/arasan-nand-controller.c:1453:33: warning: shift count >= width of type [-Wshift-count-overflow]
           ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
                                          ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   1 warning and 4 errors generated.


vim +1453 drivers/mtd/nand/raw/arasan-nand-controller.c

197b88fecc50ee Miquel Raynal 2020-05-19  1416  
197b88fecc50ee Miquel Raynal 2020-05-19  1417  static int anfc_probe(struct platform_device *pdev)
197b88fecc50ee Miquel Raynal 2020-05-19  1418  {
197b88fecc50ee Miquel Raynal 2020-05-19  1419  	struct arasan_nfc *nfc;
197b88fecc50ee Miquel Raynal 2020-05-19  1420  	int ret;
197b88fecc50ee Miquel Raynal 2020-05-19  1421  
197b88fecc50ee Miquel Raynal 2020-05-19  1422  	nfc = devm_kzalloc(&pdev->dev, sizeof(*nfc), GFP_KERNEL);
197b88fecc50ee Miquel Raynal 2020-05-19  1423  	if (!nfc)
197b88fecc50ee Miquel Raynal 2020-05-19  1424  		return -ENOMEM;
197b88fecc50ee Miquel Raynal 2020-05-19  1425  
197b88fecc50ee Miquel Raynal 2020-05-19  1426  	nfc->dev = &pdev->dev;
197b88fecc50ee Miquel Raynal 2020-05-19  1427  	nand_controller_init(&nfc->controller);
197b88fecc50ee Miquel Raynal 2020-05-19  1428  	nfc->controller.ops = &anfc_ops;
197b88fecc50ee Miquel Raynal 2020-05-19  1429  	INIT_LIST_HEAD(&nfc->chips);
197b88fecc50ee Miquel Raynal 2020-05-19  1430  
197b88fecc50ee Miquel Raynal 2020-05-19  1431  	nfc->base = devm_platform_ioremap_resource(pdev, 0);
197b88fecc50ee Miquel Raynal 2020-05-19  1432  	if (IS_ERR(nfc->base))
197b88fecc50ee Miquel Raynal 2020-05-19  1433  		return PTR_ERR(nfc->base);
197b88fecc50ee Miquel Raynal 2020-05-19  1434  
197b88fecc50ee Miquel Raynal 2020-05-19  1435  	anfc_reset(nfc);
197b88fecc50ee Miquel Raynal 2020-05-19  1436  
197b88fecc50ee Miquel Raynal 2020-05-19  1437  	nfc->controller_clk = devm_clk_get(&pdev->dev, "controller");
197b88fecc50ee Miquel Raynal 2020-05-19  1438  	if (IS_ERR(nfc->controller_clk))
197b88fecc50ee Miquel Raynal 2020-05-19  1439  		return PTR_ERR(nfc->controller_clk);
197b88fecc50ee Miquel Raynal 2020-05-19  1440  
197b88fecc50ee Miquel Raynal 2020-05-19  1441  	nfc->bus_clk = devm_clk_get(&pdev->dev, "bus");
197b88fecc50ee Miquel Raynal 2020-05-19  1442  	if (IS_ERR(nfc->bus_clk))
197b88fecc50ee Miquel Raynal 2020-05-19  1443  		return PTR_ERR(nfc->bus_clk);
197b88fecc50ee Miquel Raynal 2020-05-19  1444  
197b88fecc50ee Miquel Raynal 2020-05-19  1445  	ret = clk_prepare_enable(nfc->controller_clk);
197b88fecc50ee Miquel Raynal 2020-05-19  1446  	if (ret)
197b88fecc50ee Miquel Raynal 2020-05-19  1447  		return ret;
197b88fecc50ee Miquel Raynal 2020-05-19  1448  
197b88fecc50ee Miquel Raynal 2020-05-19  1449  	ret = clk_prepare_enable(nfc->bus_clk);
197b88fecc50ee Miquel Raynal 2020-05-19  1450  	if (ret)
197b88fecc50ee Miquel Raynal 2020-05-19  1451  		goto disable_controller_clk;
197b88fecc50ee Miquel Raynal 2020-05-19  1452  
61622f6791a1f4 Miquel Raynal 2021-05-27 @1453  	ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
61622f6791a1f4 Miquel Raynal 2021-05-27  1454  	if (ret)
61622f6791a1f4 Miquel Raynal 2021-05-27  1455  		return ret;
61622f6791a1f4 Miquel Raynal 2021-05-27  1456  
acbd3d0945f9cc Miquel Raynal 2021-05-26  1457  	ret = anfc_parse_cs(nfc);
acbd3d0945f9cc Miquel Raynal 2021-05-26  1458  	if (ret)
acbd3d0945f9cc Miquel Raynal 2021-05-26  1459  		goto disable_bus_clk;
acbd3d0945f9cc Miquel Raynal 2021-05-26  1460  
197b88fecc50ee Miquel Raynal 2020-05-19  1461  	ret = anfc_chips_init(nfc);
197b88fecc50ee Miquel Raynal 2020-05-19  1462  	if (ret)
197b88fecc50ee Miquel Raynal 2020-05-19  1463  		goto disable_bus_clk;
197b88fecc50ee Miquel Raynal 2020-05-19  1464  
197b88fecc50ee Miquel Raynal 2020-05-19  1465  	platform_set_drvdata(pdev, nfc);
197b88fecc50ee Miquel Raynal 2020-05-19  1466  
197b88fecc50ee Miquel Raynal 2020-05-19  1467  	return 0;
197b88fecc50ee Miquel Raynal 2020-05-19  1468  
197b88fecc50ee Miquel Raynal 2020-05-19  1469  disable_bus_clk:
197b88fecc50ee Miquel Raynal 2020-05-19  1470  	clk_disable_unprepare(nfc->bus_clk);
197b88fecc50ee Miquel Raynal 2020-05-19  1471  
197b88fecc50ee Miquel Raynal 2020-05-19  1472  disable_controller_clk:
197b88fecc50ee Miquel Raynal 2020-05-19  1473  	clk_disable_unprepare(nfc->controller_clk);
197b88fecc50ee Miquel Raynal 2020-05-19  1474  
197b88fecc50ee Miquel Raynal 2020-05-19  1475  	return ret;
197b88fecc50ee Miquel Raynal 2020-05-19  1476  }
197b88fecc50ee Miquel Raynal 2020-05-19  1477  

:::::: The code at line 1453 was first introduced by commit
:::::: 61622f6791a1f4ac2b84b93f4e8bf5ca20d105aa mtd: rawnand: arasan: Use the right DMA mask

:::::: TO: Miquel Raynal <miquel.raynal@bootlin.com>
:::::: CC: Miquel Raynal <miquel.raynal@bootlin.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 28806 bytes --]

^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: [linux-next:master 9419/10007] drivers/mtd/nand/raw/arasan-nand-controller.c:1453:33: warning: shift count >= width of type
  2021-06-16 10:33 [linux-next:master 9419/10007] drivers/mtd/nand/raw/arasan-nand-controller.c:1453:33: warning: shift count >= width of type kernel test robot
@ 2021-06-18  7:46 ` Miquel Raynal
  2021-06-18 17:09   ` Nathan Chancellor
  0 siblings, 1 reply; 3+ messages in thread
From: Miquel Raynal @ 2021-06-18  7:46 UTC (permalink / raw)
  To: kernel test robot
  Cc: kbuild-all, clang-built-linux, Linux Memory Management List

Hello,

kernel test robot <lkp@intel.com> wrote on Wed, 16 Jun 2021 18:33:22
+0800:

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   19ae1f2bd9c091059f80646604ccef8a1e614f57
> commit: 236fd3e0427070413e7059dc3c52c3f9c89f7cc0 [9419/10007] Merge remote-tracking branch 'nand/nand/next'
> config: riscv-randconfig-r013-20210615 (attached as .config)
> compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 64720f57bea6a6bf033feef4a5751ab9c0c3b401)
> 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
>         # install riscv cross compiling tool for clang build
>         # apt-get install binutils-riscv64-linux-gnu
>         # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=236fd3e0427070413e7059dc3c52c3f9c89f7cc0
>         git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>         git fetch --no-tags linux-next master
>         git checkout 236fd3e0427070413e7059dc3c52c3f9c89f7cc0
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
> 
> All warnings (new ones prefixed by >>):
> 
>    In file included from drivers/mtd/nand/raw/arasan-nand-controller.c:17:
>    In file included from include/linux/dma-mapping.h:10:
>    In file included from include/linux/scatterlist.h:8:
>    In file included from include/linux/mm.h:33:
>    In file included from include/linux/pgtable.h:6:
>    arch/riscv/include/asm/pgtable.h:521:9: error: implicit declaration of function 'pfn_pmd' [-Werror,-Wimplicit-function-declaration]
>            return pfn_pmd(page_to_pfn(page), prot);
>                   ^
>    arch/riscv/include/asm/pgtable.h:521:9: note: did you mean 'pfn_pgd'?
>    arch/riscv/include/asm/pgtable.h:222:21: note: 'pfn_pgd' declared here
>    static inline pgd_t pfn_pgd(unsigned long pfn, pgprot_t prot)
>                        ^
>    arch/riscv/include/asm/pgtable.h:521:17: error: implicit declaration of function 'page_to_section' [-Werror,-Wimplicit-function-declaration]
>            return pfn_pmd(page_to_pfn(page), prot);
>                           ^
>    include/asm-generic/memory_model.h:81:21: note: expanded from macro 'page_to_pfn'
>    #define page_to_pfn __page_to_pfn
>                        ^
>    include/asm-generic/memory_model.h:64:14: note: expanded from macro '__page_to_pfn'
>            int __sec = page_to_section(__pg);                      \
>                        ^
>    arch/riscv/include/asm/pgtable.h:521:17: note: did you mean '__nr_to_section'?
>    include/asm-generic/memory_model.h:81:21: note: expanded from macro 'page_to_pfn'
>    #define page_to_pfn __page_to_pfn
>                        ^
>    include/asm-generic/memory_model.h:64:14: note: expanded from macro '__page_to_pfn'
>            int __sec = page_to_section(__pg);                      \
>                        ^
>    include/linux/mmzone.h:1314:35: note: '__nr_to_section' declared here
>    static inline struct mem_section *__nr_to_section(unsigned long nr)
>                                      ^
>    In file included from drivers/mtd/nand/raw/arasan-nand-controller.c:17:
>    In file included from include/linux/dma-mapping.h:10:
>    In file included from include/linux/scatterlist.h:8:
>    In file included from include/linux/mm.h:33:
>    In file included from include/linux/pgtable.h:6:
>    arch/riscv/include/asm/pgtable.h:521:9: error: returning 'int' from a function with incompatible result type 'pmd_t'
>            return pfn_pmd(page_to_pfn(page), prot);
>                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    In file included from drivers/mtd/nand/raw/arasan-nand-controller.c:17:
>    In file included from include/linux/dma-mapping.h:10:
>    In file included from include/linux/scatterlist.h:8:
>    include/linux/mm.h:1552:29: error: static declaration of 'page_to_section' follows non-static declaration
>    static inline unsigned long page_to_section(const struct page *page)
>                                ^
>    arch/riscv/include/asm/pgtable.h:521:17: note: previous implicit declaration is here
>            return pfn_pmd(page_to_pfn(page), prot);
>                           ^
>    include/asm-generic/memory_model.h:81:21: note: expanded from macro 'page_to_pfn'
>    #define page_to_pfn __page_to_pfn
>                        ^
>    include/asm-generic/memory_model.h:64:14: note: expanded from macro '__page_to_pfn'
>            int __sec = page_to_section(__pg);                      \
>                        ^
> >> drivers/mtd/nand/raw/arasan-nand-controller.c:1453:33: warning: shift count >= width of type [-Wshift-count-overflow]  
>            ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
>                                           ^~~~~~~~~~~~~~~~
>    include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
>    #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
>                                                         ^ ~~~
>    1 warning and 4 errors generated.

I'm not sure to understand what the proper fix here. I am also unable
to reproduce the warning with the above steps.

Thanks,
Miquèl


^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: [linux-next:master 9419/10007] drivers/mtd/nand/raw/arasan-nand-controller.c:1453:33: warning: shift count >= width of type
  2021-06-18  7:46 ` Miquel Raynal
@ 2021-06-18 17:09   ` Nathan Chancellor
  0 siblings, 0 replies; 3+ messages in thread
From: Nathan Chancellor @ 2021-06-18 17:09 UTC (permalink / raw)
  To: Miquel Raynal, kernel test robot
  Cc: kbuild-all, clang-built-linux, Linux Memory Management List

On 6/18/2021 12:46 AM, Miquel Raynal wrote:
> Hello,
> 
> kernel test robot <lkp@intel.com> wrote on Wed, 16 Jun 2021 18:33:22
> +0800:
> 
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
>> head:   19ae1f2bd9c091059f80646604ccef8a1e614f57
>> commit: 236fd3e0427070413e7059dc3c52c3f9c89f7cc0 [9419/10007] Merge remote-tracking branch 'nand/nand/next'
>> config: riscv-randconfig-r013-20210615 (attached as .config)
>> compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 64720f57bea6a6bf033feef4a5751ab9c0c3b401)
>> 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
>>          # install riscv cross compiling tool for clang build
>>          # apt-get install binutils-riscv64-linux-gnu
>>          # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=236fd3e0427070413e7059dc3c52c3f9c89f7cc0
>>          git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>>          git fetch --no-tags linux-next master
>>          git checkout 236fd3e0427070413e7059dc3c52c3f9c89f7cc0
>>          # save the attached .config to linux build tree
>>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv
>>
>> If you fix the issue, kindly add following tag as appropriate
>> Reported-by: kernel test robot <lkp@intel.com>
>>
>> All warnings (new ones prefixed by >>):
>>
>>     In file included from drivers/mtd/nand/raw/arasan-nand-controller.c:17:
>>     In file included from include/linux/dma-mapping.h:10:
>>     In file included from include/linux/scatterlist.h:8:
>>     In file included from include/linux/mm.h:33:
>>     In file included from include/linux/pgtable.h:6:
>>     arch/riscv/include/asm/pgtable.h:521:9: error: implicit declaration of function 'pfn_pmd' [-Werror,-Wimplicit-function-declaration]
>>             return pfn_pmd(page_to_pfn(page), prot);
>>                    ^
>>     arch/riscv/include/asm/pgtable.h:521:9: note: did you mean 'pfn_pgd'?
>>     arch/riscv/include/asm/pgtable.h:222:21: note: 'pfn_pgd' declared here
>>     static inline pgd_t pfn_pgd(unsigned long pfn, pgprot_t prot)
>>                         ^
>>     arch/riscv/include/asm/pgtable.h:521:17: error: implicit declaration of function 'page_to_section' [-Werror,-Wimplicit-function-declaration]
>>             return pfn_pmd(page_to_pfn(page), prot);
>>                            ^
>>     include/asm-generic/memory_model.h:81:21: note: expanded from macro 'page_to_pfn'
>>     #define page_to_pfn __page_to_pfn
>>                         ^
>>     include/asm-generic/memory_model.h:64:14: note: expanded from macro '__page_to_pfn'
>>             int __sec = page_to_section(__pg);                      \
>>                         ^
>>     arch/riscv/include/asm/pgtable.h:521:17: note: did you mean '__nr_to_section'?
>>     include/asm-generic/memory_model.h:81:21: note: expanded from macro 'page_to_pfn'
>>     #define page_to_pfn __page_to_pfn
>>                         ^
>>     include/asm-generic/memory_model.h:64:14: note: expanded from macro '__page_to_pfn'
>>             int __sec = page_to_section(__pg);                      \
>>                         ^
>>     include/linux/mmzone.h:1314:35: note: '__nr_to_section' declared here
>>     static inline struct mem_section *__nr_to_section(unsigned long nr)
>>                                       ^
>>     In file included from drivers/mtd/nand/raw/arasan-nand-controller.c:17:
>>     In file included from include/linux/dma-mapping.h:10:
>>     In file included from include/linux/scatterlist.h:8:
>>     In file included from include/linux/mm.h:33:
>>     In file included from include/linux/pgtable.h:6:
>>     arch/riscv/include/asm/pgtable.h:521:9: error: returning 'int' from a function with incompatible result type 'pmd_t'
>>             return pfn_pmd(page_to_pfn(page), prot);
>>                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>     In file included from drivers/mtd/nand/raw/arasan-nand-controller.c:17:
>>     In file included from include/linux/dma-mapping.h:10:
>>     In file included from include/linux/scatterlist.h:8:
>>     include/linux/mm.h:1552:29: error: static declaration of 'page_to_section' follows non-static declaration
>>     static inline unsigned long page_to_section(const struct page *page)
>>                                 ^
>>     arch/riscv/include/asm/pgtable.h:521:17: note: previous implicit declaration is here
>>             return pfn_pmd(page_to_pfn(page), prot);
>>                            ^
>>     include/asm-generic/memory_model.h:81:21: note: expanded from macro 'page_to_pfn'
>>     #define page_to_pfn __page_to_pfn
>>                         ^
>>     include/asm-generic/memory_model.h:64:14: note: expanded from macro '__page_to_pfn'
>>             int __sec = page_to_section(__pg);                      \
>>                         ^
>>>> drivers/mtd/nand/raw/arasan-nand-controller.c:1453:33: warning: shift count >= width of type [-Wshift-count-overflow]
>>             ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
>>                                            ^~~~~~~~~~~~~~~~
>>     include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
>>     #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
>>                                                          ^ ~~~
>>     1 warning and 4 errors generated.
> 
> I'm not sure to understand what the proper fix here. I am also unable
> to reproduce the warning with the above steps.
> 

I think this warning shows up because of the other errors that are 
present in the build log. I do not think there is anything for you to do 
about this warning.

Cheers,
Nathan


^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-06-18 17:09 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2021-06-16 10:33 [linux-next:master 9419/10007] drivers/mtd/nand/raw/arasan-nand-controller.c:1453:33: warning: shift count >= width of type kernel test robot
2021-06-18  7:46 ` Miquel Raynal
2021-06-18 17:09   ` Nathan Chancellor

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