linux-kernel - drivers/gpu/drm/i915/display/intel_gmbus.c:144:6: sparse: sparse: symbol 'intel_gmbus_ddc_reserve_for_mipi' was not declared. Should it be static?

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Date:   Sat, 18 Sep 2021 15:19:37 +0800
From:   kernel test robot <lkp@...el.com>
To:     Lee Shawn C <shawn.c.lee@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        0day robot <lkp@...el.com>
Subject: drivers/gpu/drm/i915/display/intel_gmbus.c:144:6: sparse: sparse:
 symbol 'intel_gmbus_ddc_reserve_for_mipi' was not declared. Should it be
 static?

tree:   https://github.com/0day-ci/linux/commits/UPDATE-20210916-220656/Lee-Shawn-C/drm-i915-dsi-unregister-gmbus-if-LFP-display-was-MIPI-panel/20210916-181936
head:   37a6b71c76cc745b62b40e77e7f882ff7ceeadb0
commit: 37a6b71c76cc745b62b40e77e7f882ff7ceeadb0 drm/i915/dsi: do not register gmbus if it was reserved for MIPI display
date:   2 days ago
config: x86_64-rhel-8.3-kselftests (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://github.com/0day-ci/linux/commit/37a6b71c76cc745b62b40e77e7f882ff7ceeadb0
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review UPDATE-20210916-220656/Lee-Shawn-C/drm-i915-dsi-unregister-gmbus-if-LFP-display-was-MIPI-panel/20210916-181936
        git checkout 37a6b71c76cc745b62b40e77e7f882ff7ceeadb0
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash

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


sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/i915/display/intel_gmbus.c:144:6: sparse: sparse: symbol 'intel_gmbus_ddc_reserve_for_mipi' was not declared. Should it be static?

Please review and possibly fold the followup patch.

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

Download attachment ".config.gz" of type "application/gzip" (42150 bytes)