linux-kernel - [ti:ti-rt-linux-5.10.y 9019/9316] drivers/gpu/drm/drm_atomic_helper.c:3311:35: warning: variable 'new_priv

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Message-ID: <202109151250.3E2jmTRo-lkp@intel.com>
Date:   Wed, 15 Sep 2021 12:55:52 +0800
From:   kernel test robot <lkp@...el.com>
To:     Benoit Parrot <bparrot@...com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Vignesh Raghavendra <vigneshr@...com>,
        Neil Armstrong <narmstrong@...libre.com>
Subject: [ti:ti-rt-linux-5.10.y 9019/9316]
 drivers/gpu/drm/drm_atomic_helper.c:3311:35: warning: variable
 'new_priv_state' set but not used

Hi Benoit,

FYI, the error/warning still remains.

tree:   git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-rt-linux-5.10.y
head:   43939f54c26e9885d7f59f18ee97dd76393606f9
commit: e172fed2d657ef79c65241251ff26161a8b3f1c4 [9019/9316] drm/atomic: integrate private objects with suspend/resume helpers
config: mips-allyesconfig (attached as .config)
compiler: mips-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git remote add ti git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git
        git fetch --no-tags ti ti-rt-linux-5.10.y
        git checkout e172fed2d657ef79c65241251ff26161a8b3f1c4
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=mips 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/drm_atomic_helper.c: In function 'drm_atomic_helper_commit_duplicated_state':
>> drivers/gpu/drm/drm_atomic_helper.c:3311:35: warning: variable 'new_priv_state' set but not used [-Wunused-but-set-variable]
    3311 |         struct drm_private_state *new_priv_state;
         |                                   ^~~~~~~~~~~~~~


vim +/new_priv_state +3311 drivers/gpu/drm/drm_atomic_helper.c

  3284	
  3285	/**
  3286	 * drm_atomic_helper_commit_duplicated_state - commit duplicated state
  3287	 * @state: duplicated atomic state to commit
  3288	 * @ctx: pointer to acquire_ctx to use for commit.
  3289	 *
  3290	 * The state returned by drm_atomic_helper_duplicate_state() and
  3291	 * drm_atomic_helper_suspend() is partially invalid, and needs to
  3292	 * be fixed up before commit.
  3293	 *
  3294	 * Returns:
  3295	 * 0 on success or a negative error code on failure.
  3296	 *
  3297	 * See also:
  3298	 * drm_atomic_helper_suspend()
  3299	 */
  3300	int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state,
  3301						      struct drm_modeset_acquire_ctx *ctx)
  3302	{
  3303		int i, ret;
  3304		struct drm_plane *plane;
  3305		struct drm_plane_state *new_plane_state;
  3306		struct drm_connector *connector;
  3307		struct drm_connector_state *new_conn_state;
  3308		struct drm_crtc *crtc;
  3309		struct drm_crtc_state *new_crtc_state;
  3310		struct drm_private_obj *privobj;
> 3311		struct drm_private_state *new_priv_state;
  3312	
  3313		state->acquire_ctx = ctx;
  3314	
  3315		for_each_new_plane_in_state(state, plane, new_plane_state, i)
  3316			state->planes[i].old_state = plane->state;
  3317	
  3318		for_each_new_private_obj_in_state(state, privobj, new_priv_state, i)
  3319			state->private_objs[i].old_state = privobj->state;
  3320	
  3321		for_each_new_crtc_in_state(state, crtc, new_crtc_state, i)
  3322			state->crtcs[i].old_state = crtc->state;
  3323	
  3324		for_each_new_connector_in_state(state, connector, new_conn_state, i)
  3325			state->connectors[i].old_state = connector->state;
  3326	
  3327		ret = drm_atomic_commit(state);
  3328	
  3329		state->acquire_ctx = NULL;
  3330	
  3331		return ret;
  3332	}
  3333	EXPORT_SYMBOL(drm_atomic_helper_commit_duplicated_state);
  3334	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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