Re: [PATCH v7 2/2] PCI: dwc: Validate max-link-speed property

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

Hi Hans,

kernel test robot noticed the following build errors:

[auto build test ERROR on c23719abc3308df7ed3ad35650ad211fb2d2003d]

url:    https://github.com/intel-lab-lkp/linux/commits/Hans-Zhang/PCI-of-Remove-max-link-speed-generation-validation/20260308-223128
base:   c23719abc3308df7ed3ad35650ad211fb2d2003d
patch link:    https://lore.kernel.org/r/20260308142629.75392-3-18255117159%40163.com
patch subject: [PATCH v7 2/2] PCI: dwc: Validate max-link-speed property
config: csky-randconfig-r071-20260308 (https://download.01.org/0day-ci/archive/20260309/202603090252.S3qQ67Kh-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 10.5.0
smatch: v0.5.0-9004-gb810ac53
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260309/202603090252.S3qQ67Kh-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603090252.S3qQ67Kh-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/kernel.h:16,
                    from include/linux/clk.h:13,
                    from drivers/pci/controller/dwc/pcie-designware.c:13:
   drivers/pci/controller/dwc/pcie-designware.c: In function 'dw_pcie_get_link_speed':
>> include/linux/array_size.h:11:32: error: invalid application of 'sizeof' to incomplete type 'const unsigned char[]'
      11 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
         |                                ^
   drivers/pci/controller/dwc/pcie-designware.c:128:19: note: in expansion of macro 'ARRAY_SIZE'
     128 |      max_speed >= ARRAY_SIZE(pcie_link_speed) ||
         |                   ^~~~~~~~~~


vim +11 include/linux/array_size.h

3cd39bc3b11b8d Alejandro Colomar 2023-10-03   6  
3cd39bc3b11b8d Alejandro Colomar 2023-10-03   7  /**
3cd39bc3b11b8d Alejandro Colomar 2023-10-03   8   * ARRAY_SIZE - get the number of elements in array @arr
3cd39bc3b11b8d Alejandro Colomar 2023-10-03   9   * @arr: array to be sized
3cd39bc3b11b8d Alejandro Colomar 2023-10-03  10   */
3cd39bc3b11b8d Alejandro Colomar 2023-10-03 @11  #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
3cd39bc3b11b8d Alejandro Colomar 2023-10-03  12  

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