Re: [PATCH v4 01/20] driver core: Split devres APIs to device/devres.h

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Hi Raag,

kernel test robot noticed the following build errors:

[auto build test ERROR on a1e062ab4a1f19bb0e94093ef90ab9a74f1f7744]

url:    https://github.com/intel-lab-lkp/linux/commits/Raag-Jadav/driver-core-Split-devres-APIs-to-device-devres-h/20250210-145732
base:   a1e062ab4a1f19bb0e94093ef90ab9a74f1f7744
patch link:    https://lore.kernel.org/r/20250210064906.2181867-2-raag.jadav%40intel.com
patch subject: [PATCH v4 01/20] driver core: Split devres APIs to device/devres.h
config: powerpc64-randconfig-002-20250210 (https://download.01.org/0day-ci/archive/20250210/202502102201.zLWaJC6V-lkp@xxxxxxxxx/config)
compiler: powerpc64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250210/202502102201.zLWaJC6V-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/202502102201.zLWaJC6V-lkp@xxxxxxxxx/

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

   In file included from include/linux/device/devres.h:7,
                    from include/linux/device.h:31,
                    from arch/powerpc/include/asm/io.h:22,
                    from include/linux/scatterlist.h:9,
                    from crypto/rsassa-pkcs1.c:11:
   include/linux/io.h: In function 'pci_remap_cfgspace':
   include/linux/io.h:106:16: error: implicit declaration of function 'ioremap_np' [-Wimplicit-function-declaration]
     106 |         return ioremap_np(offset, size) ?: ioremap(offset, size);
         |                ^~~~~~~~~~
   include/linux/io.h:106:44: error: implicit declaration of function 'ioremap' [-Wimplicit-function-declaration]
     106 |         return ioremap_np(offset, size) ?: ioremap(offset, size);
         |                                            ^~~~~~~
   include/linux/io.h:106:42: error: returning 'int' from a function with return type 'void *' makes pointer from integer without a cast [-Wint-conversion]
     106 |         return ioremap_np(offset, size) ?: ioremap(offset, size);
         |                ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h: At top level:
>> arch/powerpc/include/asm/io.h:885:22: error: conflicting types for 'ioremap'; have 'void *(phys_addr_t,  long unsigned int)' {aka 'void *(long long unsigned int,  long unsigned int)'}
     885 | extern void __iomem *ioremap(phys_addr_t address, unsigned long size);
         |                      ^~~~~~~
   include/linux/io.h:106:44: note: previous implicit declaration of 'ioremap' with type 'int()'
     106 |         return ioremap_np(offset, size) ?: ioremap(offset, size);
         |                                            ^~~~~~~
   In file included from include/asm-generic/io.h:17,
                    from arch/powerpc/include/asm/io.h:1031:
>> include/asm-generic/iomap.h:106:20: error: conflicting types for 'ioremap_np'; have 'void *(phys_addr_t,  size_t)' {aka 'void *(long long unsigned int,  long unsigned int)'}
     106 | #define ioremap_np ioremap_np
         |                    ^~~~~~~~~~
   include/asm-generic/iomap.h:107:29: note: in expansion of macro 'ioremap_np'
     107 | static inline void __iomem *ioremap_np(phys_addr_t offset, size_t size)
         |                             ^~~~~~~~~~
   include/linux/io.h:106:16: note: previous implicit declaration of 'ioremap_np' with type 'int()'
     106 |         return ioremap_np(offset, size) ?: ioremap(offset, size);
         |                ^~~~~~~~~~
--
   In file included from arch/powerpc/include/asm/io.h:274,
                    from include/linux/io.h:14,
                    from include/linux/device/devres.h:7,
                    from include/linux/device.h:31,
                    from include/linux/acpi.h:14,
                    from include/linux/i2c.h:13,
                    from drivers/input/touchscreen/ili210x.c:5:
>> arch/powerpc/include/asm/eeh.h:304:45: warning: 'struct iommu_group' declared inside parameter list will not be visible outside of this definition or declaration
     304 | struct eeh_pe *eeh_iommu_group_to_pe(struct iommu_group *group);
         |                                             ^~~~~~~~~~~
--
   In file included from arch/powerpc/include/asm/io.h:274,
                    from include/linux/io.h:14,
                    from include/linux/device/devres.h:7,
                    from include/linux/device.h:31,
                    from include/linux/input.h:19,
                    from drivers/input/touchscreen/touchright.c:17:
>> arch/powerpc/include/asm/eeh.h:304:45: warning: 'struct iommu_group' declared inside parameter list will not be visible outside of this definition or declaration
     304 | struct eeh_pe *eeh_iommu_group_to_pe(struct iommu_group *group);
         |                                             ^~~~~~~~~~~
   drivers/input/touchscreen/touchright.c: In function 'tr_connect':
   drivers/input/touchscreen/touchright.c:114:49: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
     114 |         snprintf(tr->phys, sizeof(tr->phys), "%s/input0", serio->phys);
         |                                                 ^~~~~~~
   drivers/input/touchscreen/touchright.c:114:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
     114 |         snprintf(tr->phys, sizeof(tr->phys), "%s/input0", serio->phys);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
   In file included from arch/powerpc/include/asm/io.h:274,
                    from include/linux/io.h:14,
                    from include/linux/device/devres.h:7,
                    from include/linux/device.h:31,
                    from include/linux/input.h:19,
                    from drivers/input/touchscreen/penmount.c:17:
>> arch/powerpc/include/asm/eeh.h:304:45: warning: 'struct iommu_group' declared inside parameter list will not be visible outside of this definition or declaration
     304 | struct eeh_pe *eeh_iommu_group_to_pe(struct iommu_group *group);
         |                                             ^~~~~~~~~~~
   drivers/input/touchscreen/penmount.c: In function 'pm_connect':
   drivers/input/touchscreen/penmount.c:211:49: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
     211 |         snprintf(pm->phys, sizeof(pm->phys), "%s/input0", serio->phys);
         |                                                 ^~~~~~~
   drivers/input/touchscreen/penmount.c:211:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
     211 |         snprintf(pm->phys, sizeof(pm->phys), "%s/input0", serio->phys);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
   In file included from arch/powerpc/include/asm/io.h:274,
                    from include/linux/io.h:14,
                    from include/linux/device/devres.h:7,
                    from include/linux/device.h:31,
                    from include/linux/input.h:19,
                    from drivers/input/touchscreen/inexio.c:19:
>> arch/powerpc/include/asm/eeh.h:304:45: warning: 'struct iommu_group' declared inside parameter list will not be visible outside of this definition or declaration
     304 | struct eeh_pe *eeh_iommu_group_to_pe(struct iommu_group *group);
         |                                             ^~~~~~~~~~~
   drivers/input/touchscreen/inexio.c: In function 'inexio_connect':
   drivers/input/touchscreen/inexio.c:126:59: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
     126 |         snprintf(pinexio->phys, sizeof(pinexio->phys), "%s/input0", serio->phys);
         |                                                           ^~~~~~~
   drivers/input/touchscreen/inexio.c:126:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
     126 |         snprintf(pinexio->phys, sizeof(pinexio->phys), "%s/input0", serio->phys);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
   In file included from arch/powerpc/include/asm/io.h:274,
                    from include/linux/io.h:14,
                    from include/linux/device/devres.h:7,
                    from include/linux/device.h:31,
                    from include/linux/input.h:19,
                    from drivers/input/touchscreen/touchwin.c:24:
>> arch/powerpc/include/asm/eeh.h:304:45: warning: 'struct iommu_group' declared inside parameter list will not be visible outside of this definition or declaration
     304 | struct eeh_pe *eeh_iommu_group_to_pe(struct iommu_group *group);
         |                                             ^~~~~~~~~~~
   drivers/input/touchscreen/touchwin.c: In function 'tw_connect':
   drivers/input/touchscreen/touchwin.c:121:49: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
     121 |         snprintf(tw->phys, sizeof(tw->phys), "%s/input0", serio->phys);
         |                                                 ^~~~~~~
   drivers/input/touchscreen/touchwin.c:121:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
     121 |         snprintf(tw->phys, sizeof(tw->phys), "%s/input0", serio->phys);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
   In file included from arch/powerpc/include/asm/io.h:274,
                    from include/linux/io.h:14,
                    from include/linux/device/devres.h:7,
                    from include/linux/device.h:31,
                    from include/linux/input.h:19,
                    from drivers/input/touchscreen/hampshire.c:19:
>> arch/powerpc/include/asm/eeh.h:304:45: warning: 'struct iommu_group' declared inside parameter list will not be visible outside of this definition or declaration
     304 | struct eeh_pe *eeh_iommu_group_to_pe(struct iommu_group *group);
         |                                             ^~~~~~~~~~~
   drivers/input/touchscreen/hampshire.c: In function 'hampshire_connect':
   drivers/input/touchscreen/hampshire.c:122:21: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
     122 |                  "%s/input0", serio->phys);
         |                     ^~~~~~~
   drivers/input/touchscreen/hampshire.c:121:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
     121 |         snprintf(phampshire->phys, sizeof(phampshire->phys),
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     122 |                  "%s/input0", serio->phys);
         |                  ~~~~~~~~~~~~~~~~~~~~~~~~~
--
   In file included from arch/powerpc/include/asm/io.h:274,
                    from include/linux/io.h:14,
                    from include/linux/device/devres.h:7,
                    from include/linux/device.h:31,
                    from include/linux/input.h:19,
                    from drivers/input/touchscreen/tsc40.c:12:
>> arch/powerpc/include/asm/eeh.h:304:45: warning: 'struct iommu_group' declared inside parameter list will not be visible outside of this definition or declaration
     304 | struct eeh_pe *eeh_iommu_group_to_pe(struct iommu_group *group);
         |                                             ^~~~~~~~~~~
   drivers/input/touchscreen/tsc40.c: In function 'tsc_connect':
   drivers/input/touchscreen/tsc40.c:95:53: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
      95 |         snprintf(ptsc->phys, sizeof(ptsc->phys), "%s/input0", serio->phys);
         |                                                     ^~~~~~~
   drivers/input/touchscreen/tsc40.c:95:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
      95 |         snprintf(ptsc->phys, sizeof(ptsc->phys), "%s/input0", serio->phys);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
   In file included from arch/powerpc/include/asm/io.h:274,
                    from include/linux/io.h:14,
                    from include/linux/device/devres.h:7,
                    from include/linux/device.h:31,
                    from include/linux/input.h:19,
                    from drivers/input/touchscreen/dynapro.c:20:
>> arch/powerpc/include/asm/eeh.h:304:45: warning: 'struct iommu_group' declared inside parameter list will not be visible outside of this definition or declaration
     304 | struct eeh_pe *eeh_iommu_group_to_pe(struct iommu_group *group);
         |                                             ^~~~~~~~~~~
   drivers/input/touchscreen/dynapro.c: In function 'dynapro_connect':
   drivers/input/touchscreen/dynapro.c:123:21: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
     123 |                  "%s/input0", serio->phys);
         |                     ^~~~~~~
   drivers/input/touchscreen/dynapro.c:122:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
     122 |         snprintf(pdynapro->phys, sizeof(pdynapro->phys),
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     123 |                  "%s/input0", serio->phys);
         |                  ~~~~~~~~~~~~~~~~~~~~~~~~~


vim +885 arch/powerpc/include/asm/io.h

^1da177e4c3f415 include/asm-ppc64/io.h        Linus Torvalds         2005-04-16  853  
^1da177e4c3f415 include/asm-ppc64/io.h        Linus Torvalds         2005-04-16  854  /**
^1da177e4c3f415 include/asm-ppc64/io.h        Linus Torvalds         2005-04-16  855   * ioremap     -   map bus memory into CPU space
^1da177e4c3f415 include/asm-ppc64/io.h        Linus Torvalds         2005-04-16  856   * @address:   bus address of the memory
^1da177e4c3f415 include/asm-ppc64/io.h        Linus Torvalds         2005-04-16  857   * @size:      size of the resource to map
^1da177e4c3f415 include/asm-ppc64/io.h        Linus Torvalds         2005-04-16  858   *
^1da177e4c3f415 include/asm-ppc64/io.h        Linus Torvalds         2005-04-16  859   * ioremap performs a platform specific sequence of operations to
^1da177e4c3f415 include/asm-ppc64/io.h        Linus Torvalds         2005-04-16  860   * make bus memory CPU accessible via the readb/readw/readl/writeb/
^1da177e4c3f415 include/asm-ppc64/io.h        Linus Torvalds         2005-04-16  861   * writew/writel functions and the other mmio helpers. The returned
^1da177e4c3f415 include/asm-ppc64/io.h        Linus Torvalds         2005-04-16  862   * address is not guaranteed to be usable directly as a virtual
^1da177e4c3f415 include/asm-ppc64/io.h        Linus Torvalds         2005-04-16  863   * address.
4cb3cee03d558fd include/asm-powerpc/io.h      Benjamin Herrenschmidt 2006-11-11  864   *
4cb3cee03d558fd include/asm-powerpc/io.h      Benjamin Herrenschmidt 2006-11-11  865   * We provide a few variations of it:
4cb3cee03d558fd include/asm-powerpc/io.h      Benjamin Herrenschmidt 2006-11-11  866   *
4cb3cee03d558fd include/asm-powerpc/io.h      Benjamin Herrenschmidt 2006-11-11  867   * * ioremap is the standard one and provides non-cacheable guarded mappings
4cb3cee03d558fd include/asm-powerpc/io.h      Benjamin Herrenschmidt 2006-11-11  868   *   and can be hooked by the platform via ppc_md
4cb3cee03d558fd include/asm-powerpc/io.h      Benjamin Herrenschmidt 2006-11-11  869   *
40f1ce7fb7e8b5d arch/powerpc/include/asm/io.h Anton Blanchard        2011-05-08  870   * * ioremap_prot allows to specify the page flags as an argument and can
40f1ce7fb7e8b5d arch/powerpc/include/asm/io.h Anton Blanchard        2011-05-08  871   *   also be hooked by the platform via ppc_md.
4cb3cee03d558fd include/asm-powerpc/io.h      Benjamin Herrenschmidt 2006-11-11  872   *
be135f40899cb33 arch/powerpc/include/asm/io.h Anton Blanchard        2011-05-08  873   * * ioremap_wc enables write combining
be135f40899cb33 arch/powerpc/include/asm/io.h Anton Blanchard        2011-05-08  874   *
86c391bd5f47101 arch/powerpc/include/asm/io.h Christophe Leroy       2018-10-09  875   * * ioremap_wt enables write through
86c391bd5f47101 arch/powerpc/include/asm/io.h Christophe Leroy       2018-10-09  876   *
86c391bd5f47101 arch/powerpc/include/asm/io.h Christophe Leroy       2018-10-09  877   * * ioremap_coherent maps coherent cached memory
86c391bd5f47101 arch/powerpc/include/asm/io.h Christophe Leroy       2018-10-09  878   *
4cb3cee03d558fd include/asm-powerpc/io.h      Benjamin Herrenschmidt 2006-11-11  879   * * iounmap undoes such a mapping and can be hooked
4cb3cee03d558fd include/asm-powerpc/io.h      Benjamin Herrenschmidt 2006-11-11  880   *
1cdab55d8a8313f arch/powerpc/include/asm/io.h Benjamin Herrenschmidt 2009-02-22  881   * * __ioremap_caller is the same as above but takes an explicit caller
1cdab55d8a8313f arch/powerpc/include/asm/io.h Benjamin Herrenschmidt 2009-02-22  882   *   reference rather than using __builtin_return_address(0)
1cdab55d8a8313f arch/powerpc/include/asm/io.h Benjamin Herrenschmidt 2009-02-22  883   *
^1da177e4c3f415 include/asm-ppc64/io.h        Linus Torvalds         2005-04-16  884   */
68a64357d15ae4f include/asm-powerpc/io.h      Benjamin Herrenschmidt 2006-11-13 @885  extern void __iomem *ioremap(phys_addr_t address, unsigned long size);
8d05554dca2af6a arch/powerpc/include/asm/io.h Christophe Leroy       2023-07-06  886  #define ioremap ioremap
8d05554dca2af6a arch/powerpc/include/asm/io.h Christophe Leroy       2023-07-06  887  #define ioremap_prot ioremap_prot
be135f40899cb33 arch/powerpc/include/asm/io.h Anton Blanchard        2011-05-08  888  extern void __iomem *ioremap_wc(phys_addr_t address, unsigned long size);
894fa235eb4ca0b arch/powerpc/include/asm/io.h Christophe Leroy       2020-11-21  889  #define ioremap_wc ioremap_wc
894fa235eb4ca0b arch/powerpc/include/asm/io.h Christophe Leroy       2020-11-21  890  

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