Hi Jinjie,

kernel test robot noticed the following build errors:

[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on linus/master v6.12-rc3 next-20241017]
[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/Jinjie-Ruan/drm-connector-hdmi-Fix-memory-leak-in-drm_display_mode_from_cea_vic/20241014-152022
base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link:    
https://lore.kernel.org/r/20241014071632.989108-2-ruanjinjie%40huawei.com
patch subject: [PATCH 1/3] drm/connector: hdmi: Fix memory leak in 
drm_display_mode_from_cea_vic()
config: arm-randconfig-002-20241017 
(https://download.01.org/0day-ci/archive/20241017/202410172046.2w97yglm-...@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project 
f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): 
(https://download.01.org/0day-ci/archive/20241017/202410172046.2w97yglm-...@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 <l...@intel.com>
| Closes: 
https://lore.kernel.org/oe-kbuild-all/202410172046.2w97yglm-...@intel.com/

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/tests/drm_connector_test.c:1008:24: error: passing 'const 
>> struct drm_display_mode *' to parameter of type 'struct drm_display_mode *' 
>> discards qualifiers 
>> [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           drm_mode_destroy(drm, mode);
                                 ^~~~
   include/drm/drm_modes.h:456:72: note: passing argument to parameter 'mode' 
here
   void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
                                                                          ^
   drivers/gpu/drm/tests/drm_connector_test.c:1031:24: error: passing 'const 
struct drm_display_mode *' to parameter of type 'struct drm_display_mode *' 
discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           drm_mode_destroy(drm, mode);
                                 ^~~~
   include/drm/drm_modes.h:456:72: note: passing argument to parameter 'mode' 
here
   void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
                                                                          ^
   drivers/gpu/drm/tests/drm_connector_test.c:1051:24: error: passing 'const 
struct drm_display_mode *' to parameter of type 'struct drm_display_mode *' 
discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           drm_mode_destroy(drm, mode);
                                 ^~~~
   include/drm/drm_modes.h:456:72: note: passing argument to parameter 'mode' 
here
   void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
                                                                          ^
   drivers/gpu/drm/tests/drm_connector_test.c:1074:24: error: passing 'const 
struct drm_display_mode *' to parameter of type 'struct drm_display_mode *' 
discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           drm_mode_destroy(drm, mode);
                                 ^~~~
   include/drm/drm_modes.h:456:72: note: passing argument to parameter 'mode' 
here
   void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
                                                                          ^
   drivers/gpu/drm/tests/drm_connector_test.c:1094:24: error: passing 'const 
struct drm_display_mode *' to parameter of type 'struct drm_display_mode *' 
discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           drm_mode_destroy(drm, mode);
                                 ^~~~
   include/drm/drm_modes.h:456:72: note: passing argument to parameter 'mode' 
here
   void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
                                                                          ^
   drivers/gpu/drm/tests/drm_connector_test.c:1117:24: error: passing 'const 
struct drm_display_mode *' to parameter of type 'struct drm_display_mode *' 
discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           drm_mode_destroy(drm, mode);
                                 ^~~~
   include/drm/drm_modes.h:456:72: note: passing argument to parameter 'mode' 
here
   void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
                                                                          ^
   drivers/gpu/drm/tests/drm_connector_test.c:1142:24: error: passing 'const 
struct drm_display_mode *' to parameter of type 'struct drm_display_mode *' 
discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           drm_mode_destroy(drm, mode);
                                 ^~~~
   include/drm/drm_modes.h:456:72: note: passing argument to parameter 'mode' 
here
   void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
                                                                          ^
   drivers/gpu/drm/tests/drm_connector_test.c:1182:24: error: passing 'const 
struct drm_display_mode *' to parameter of type 'struct drm_display_mode *' 
discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           drm_mode_destroy(drm, mode);
                                 ^~~~
   include/drm/drm_modes.h:456:72: note: passing argument to parameter 'mode' 
here
   void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
                                                                          ^
   drivers/gpu/drm/tests/drm_connector_test.c:1209:24: error: passing 'const 
struct drm_display_mode *' to parameter of type 'struct drm_display_mode *' 
discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           drm_mode_destroy(drm, mode);
                                 ^~~~
   include/drm/drm_modes.h:456:72: note: passing argument to parameter 'mode' 
here
   void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
                                                                          ^
   drivers/gpu/drm/tests/drm_connector_test.c:1233:24: error: passing 'const 
struct drm_display_mode *' to parameter of type 'struct drm_display_mode *' 
discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           drm_mode_destroy(drm, mode);
                                 ^~~~
   include/drm/drm_modes.h:456:72: note: passing argument to parameter 'mode' 
here
   void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
                                                                          ^
   drivers/gpu/drm/tests/drm_connector_test.c:1257:24: error: passing 'const 
struct drm_display_mode *' to parameter of type 'struct drm_display_mode *' 
discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           drm_mode_destroy(drm, mode);
                                 ^~~~
   include/drm/drm_modes.h:456:72: note: passing argument to parameter 'mode' 
here
   void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
                                                                          ^
   drivers/gpu/drm/tests/drm_connector_test.c:1281:24: error: passing 'const 
struct drm_display_mode *' to parameter of type 'struct drm_display_mode *' 
discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           drm_mode_destroy(drm, mode);
                                 ^~~~
   include/drm/drm_modes.h:456:72: note: passing argument to parameter 'mode' 
here
   void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
                                                                          ^
   12 errors generated.


vim +1008 drivers/gpu/drm/tests/drm_connector_test.c

   987  
   988  /*
   989   * Test that for a given mode, with 8bpc and an RGB output the TMDS
   990   * character rate is equal to the mode pixel clock.
   991   */
   992  static void drm_test_drm_hdmi_compute_mode_clock_rgb(struct kunit *test)
   993  {
   994          struct drm_connector_init_priv *priv = test->priv;
   995          const struct drm_display_mode *mode;
   996          unsigned long long rate;
   997          struct drm_device *drm = &priv->drm;
   998  
   999          mode = drm_display_mode_from_cea_vic(drm, 16);
  1000          KUNIT_ASSERT_NOT_NULL(test, mode);
  1001  
  1002          KUNIT_ASSERT_FALSE(test, mode->flags & DRM_MODE_FLAG_DBLCLK);
  1003  
  1004          rate = drm_hdmi_compute_mode_clock(mode, 8, 
HDMI_COLORSPACE_RGB);
  1005          KUNIT_ASSERT_GT(test, rate, 0);
  1006          KUNIT_EXPECT_EQ(test, mode->clock * 1000ULL, rate);
  1007  
> 1008          drm_mode_destroy(drm, mode);
  1009  }
  1010  

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