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Subject[agd5f:drm-next 120/147] drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c:202:7: warning: variable 'r' is uninitialized when used here
tree:   https://gitlab.freedesktop.org/agd5f/linux.git drm-next
head: 8bc1e581192e7ee9e808d1616b6d34b5da8f1206
commit: 9645c9c9fb153c149c7dffe8c7dc2bc8a6a7ce1a [120/147] drm/amdgpu: plumb error handling though amdgpu_benchmark()
config: arm-randconfig-r035-20220221 (https://download.01.org/0day-ci/archive/20220223/202202231216.WfOj4nJp-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
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 arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
git remote add agd5f https://gitlab.freedesktop.org/agd5f/linux.git
git fetch --no-tags agd5f drm-next
git checkout 9645c9c9fb153c149c7dffe8c7dc2bc8a6a7ce1a
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/gpu/drm/amd/amdgpu/

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c:202:7: warning: variable 'r' is uninitialized when used here [-Wuninitialized]
if (r)
^
drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c:165:10: note: initialize the variable 'r' to silence this warning
int i, r;
^
= 0
1 warning generated.


vim +/r +202 drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c

162
163 int amdgpu_benchmark(struct amdgpu_device *adev, int test_number)
164 {
165 int i, r;
166 static const int common_modes[AMDGPU_BENCHMARK_COMMON_MODES_N] = {
167 640 * 480 * 4,
168 720 * 480 * 4,
169 800 * 600 * 4,
170 848 * 480 * 4,
171 1024 * 768 * 4,
172 1152 * 768 * 4,
173 1280 * 720 * 4,
174 1280 * 800 * 4,
175 1280 * 854 * 4,
176 1280 * 960 * 4,
177 1280 * 1024 * 4,
178 1440 * 900 * 4,
179 1400 * 1050 * 4,
180 1680 * 1050 * 4,
181 1600 * 1200 * 4,
182 1920 * 1080 * 4,
183 1920 * 1200 * 4
184 };
185
186 switch (test_number) {
187 case 1:
188 /* simple test, VRAM to GTT and GTT to VRAM */
189 r = amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_GTT,
190 AMDGPU_GEM_DOMAIN_VRAM);
191 if (r)
192 return r;
193 r = amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_VRAM,
194 AMDGPU_GEM_DOMAIN_GTT);
195 if (r)
196 return r;
197 break;
198 case 2:
199 /* simple test, VRAM to VRAM */
200 amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_VRAM,
201 AMDGPU_GEM_DOMAIN_VRAM);
> 202 if (r)

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

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