linux-kernel - drivers/gpu/drm/i915/gt/uc/intel_uc.c:162:20: error: function 'guc_communication_enabled' is not needed and will not be emitted

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Date:   Tue, 20 Jul 2021 07:46:57 +0800
From:   kernel test robot <lkp@...el.com>
To:     Daniele Ceraolo Spurio <daniele.ceraolospurio@...el.com>
Cc:     clang-built-linux@...glegroups.com, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Matthew Brost <matthew.brost@...el.com>
Subject: drivers/gpu/drm/i915/gt/uc/intel_uc.c:162:20: error: function
 'guc_communication_enabled' is not needed and will not be emitted

Hi Daniele,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   2734d6c1b1a089fb593ef6a23d4b70903526fe0c
commit: 1fb12c5871521eab5fa428bf265841b1a3827a97 drm/i915/guc: skip disabling CTBs before sanitizing the GuC
date:   7 weeks ago
config: x86_64-randconfig-r024-20210720 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 5d5b08761f944d5b9822d582378333cc4b36a0a7)
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
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1fb12c5871521eab5fa428bf265841b1a3827a97
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 1fb12c5871521eab5fa428bf265841b1a3827a97
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/i915/gt/uc/intel_uc.c:162:20: error: function 'guc_communication_enabled' is not needed and will not be emitted [-Werror,-Wunneeded-internal-declaration]
   static inline bool guc_communication_enabled(struct intel_guc *guc)
                      ^
   1 error generated.


vim +/guc_communication_enabled +162 drivers/gpu/drm/i915/gt/uc/intel_uc.c

a9410a62506430 Daniele Ceraolo Spurio 2020-03-26  161  
8c69bd74a00baf Daniele Ceraolo Spurio 2019-12-16 @162  static inline bool guc_communication_enabled(struct intel_guc *guc)
8c69bd74a00baf Daniele Ceraolo Spurio 2019-12-16  163  {
8c69bd74a00baf Daniele Ceraolo Spurio 2019-12-16  164  	return intel_guc_ct_enabled(&guc->ct);
8c69bd74a00baf Daniele Ceraolo Spurio 2019-12-16  165  }
8c69bd74a00baf Daniele Ceraolo Spurio 2019-12-16  166  

:::::: The code at line 162 was first introduced by commit
:::::: 8c69bd74a00baff85f4ef46b9f79263a42e0d82c drm/i915/guc: Remove function pointers for send/receive calls

:::::: TO: Daniele Ceraolo Spurio <daniele.ceraolospurio@...el.com>
:::::: CC: Daniele Ceraolo Spurio <daniele.ceraolospurio@...el.com>

---
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" (40548 bytes)