Re: [PATCH v3 14/15] drm/i915/gt: Implement creation and removal routines for CCS engines

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

Hi Andi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on drm-intel/for-linux-next-fixes drm-tip/drm-tip drm/drm-next drm-exynos/exynos-drm-next drm-misc/drm-misc-next linus/master v6.11-rc5 next-20240826]
[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/Andi-Shyti/drm-i915-gt-Avoid-using-masked-workaround-for-CCS_MODE-setting/20240826-165045
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
patch link:    https://lore.kernel.org/r/20240823130855.72436-15-andi.shyti%40linux.intel.com
patch subject: [PATCH v3 14/15] drm/i915/gt: Implement creation and removal routines for CCS engines
config: i386-buildonly-randconfig-002-20240827 (https://download.01.org/0day-ci/archive/20240827/202408270545.o4dlO6La-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240827/202408270545.o4dlO6La-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/202408270545.o4dlO6La-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/i915/gt/intel_gt_ccs_mode.c:164:12: warning: function 'rb_engine_cmp' is not needed and will not be emitted [-Wunneeded-internal-declaration]
     164 | static int rb_engine_cmp(struct rb_node *rb_new, const struct rb_node *rb_old)
         |            ^~~~~~~~~~~~~
   1 warning generated.


vim +/rb_engine_cmp +164 drivers/gpu/drm/i915/gt/intel_gt_ccs_mode.c

   163	
 > 164	static int rb_engine_cmp(struct rb_node *rb_new, const struct rb_node *rb_old)
   165	{
   166		struct intel_engine_cs *new = rb_to_uabi_engine(rb_new);
   167		struct intel_engine_cs *old = rb_to_uabi_engine(rb_old);
   168	
   169		if (new->uabi_class - old->uabi_class == 0)
   170			return new->uabi_instance - old->uabi_instance;
   171	
   172		return new->uabi_class - old->uabi_class;
   173	}
   174	

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