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Subjectdrivers/gpu/drm/drm_atomic.c:1670:33: error: variable 'obj' set but not used
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: e71e60cd74df9386c3f684c54888f2367050b831
commit: 97a1f01b3f2f734bd3982aa5639b2b54632f8f7d drm/atomic: Add atomic_print_state to private objects
date: 10 weeks ago
config: x86_64-sof-customedconfig-mach-driver-defconfig (https://download.01.org/0day-ci/archive/20220607/202206071049.pofHsRih-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-1) 11.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97a1f01b3f2f734bd3982aa5639b2b54632f8f7d
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 97a1f01b3f2f734bd3982aa5639b2b54632f8f7d
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

drivers/gpu/drm/drm_atomic.c: In function 'drm_atomic_print_new_state':
>> drivers/gpu/drm/drm_atomic.c:1670:33: error: variable 'obj' set but not used [-Werror=unused-but-set-variable]
1670 | struct drm_private_obj *obj;
| ^~~
cc1: all warnings being treated as errors


vim +/obj +1670 drivers/gpu/drm/drm_atomic.c

1649
1650 /**
1651 * drm_atomic_print_new_state - prints drm atomic state
1652 * @state: atomic configuration to check
1653 * @p: drm printer
1654 *
1655 * This functions prints the drm atomic state snapshot using the drm printer
1656 * which is passed to it. This snapshot can be used for debugging purposes.
1657 *
1658 * Note that this function looks into the new state objects and hence its not
1659 * safe to be used after the call to drm_atomic_helper_commit_hw_done().
1660 */
1661 void drm_atomic_print_new_state(const struct drm_atomic_state *state,
1662 struct drm_printer *p)
1663 {
1664 struct drm_plane *plane;
1665 struct drm_plane_state *plane_state;
1666 struct drm_crtc *crtc;
1667 struct drm_crtc_state *crtc_state;
1668 struct drm_connector *connector;
1669 struct drm_connector_state *connector_state;
> 1670 struct drm_private_obj *obj;
1671 struct drm_private_state *obj_state;
1672 int i;
1673
1674 if (!p) {
1675 drm_err(state->dev, "invalid drm printer\n");
1676 return;
1677 }
1678
1679 drm_dbg_atomic(state->dev, "checking %p\n", state);
1680
1681 for_each_new_plane_in_state(state, plane, plane_state, i)
1682 drm_atomic_plane_print_state(p, plane_state);
1683
1684 for_each_new_crtc_in_state(state, crtc, crtc_state, i)
1685 drm_atomic_crtc_print_state(p, crtc_state);
1686
1687 for_each_new_connector_in_state(state, connector, connector_state, i)
1688 drm_atomic_connector_print_state(p, connector_state);
1689
1690 for_each_new_private_obj_in_state(state, obj, obj_state, i)
1691 drm_atomic_private_obj_print_state(p, obj_state);
1692 }
1693 EXPORT_SYMBOL(drm_atomic_print_new_state);
1694

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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