Re: [PATCH v8 1/4] drm: Introduce device wedged event

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

Hi Raag,

kernel test robot noticed the following build errors:

[auto build test ERROR on drm-xe/drm-xe-next]
[also build test ERROR on drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-tip/drm-tip linus/master v6.12-rc4 next-20241025]
[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/Raag-Jadav/drm-Introduce-device-wedged-event/20241025-165119
base:   https://gitlab.freedesktop.org/drm/xe/kernel.git drm-xe-next
patch link:    https://lore.kernel.org/r/20241025084817.144621-2-raag.jadav%40intel.com
patch subject: [PATCH v8 1/4] drm: Introduce device wedged event
config: alpha-allmodconfig (https://download.01.org/0day-ci/archive/20241026/202410261411.F8079SY8-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241026/202410261411.F8079SY8-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/202410261411.F8079SY8-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/drm_drv.c:81:10: error: nonconstant array index in initializer
      81 |         [ffs(DRM_WEDGE_RECOVERY_REBIND) - 1]    = "rebind",
         |          ^~~
   drivers/gpu/drm/drm_drv.c:81:10: note: (near initialization for 'drm_wedge_recovery_opts')
   drivers/gpu/drm/drm_drv.c:82:10: error: nonconstant array index in initializer
      82 |         [ffs(DRM_WEDGE_RECOVERY_BUS_RESET) - 1] = "bus-reset",
         |          ^~~
   drivers/gpu/drm/drm_drv.c:82:10: note: (near initialization for 'drm_wedge_recovery_opts')
   In file included from drivers/gpu/drm/drm_drv.c:30:
>> drivers/gpu/drm/drm_drv.c:84:51: error: expression in static assertion is not constant
      84 | static_assert(ARRAY_SIZE(drm_wedge_recovery_opts) == ffs(DRM_WEDGE_RECOVERY_BUS_RESET));
   include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                                        ^~~~
   drivers/gpu/drm/drm_drv.c:84:1: note: in expansion of macro 'static_assert'
      84 | static_assert(ARRAY_SIZE(drm_wedge_recovery_opts) == ffs(DRM_WEDGE_RECOVERY_BUS_RESET));
         | ^~~~~~~~~~~~~


vim +81 drivers/gpu/drm/drm_drv.c

    75	
    76	/*
    77	 * Available recovery methods for wedged device. To be sent along with device
    78	 * wedged uevent.
    79	 */
    80	static const char *const drm_wedge_recovery_opts[] = {
  > 81		[ffs(DRM_WEDGE_RECOVERY_REBIND) - 1]	= "rebind",
    82		[ffs(DRM_WEDGE_RECOVERY_BUS_RESET) - 1]	= "bus-reset",
    83	};
  > 84	static_assert(ARRAY_SIZE(drm_wedge_recovery_opts) == ffs(DRM_WEDGE_RECOVERY_BUS_RESET));
    85	

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