* [linux-next:master 436/13576] drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2927:5: warning: Value stored to 'smc_result' is never read [clang-analyzer-deadcode.DeadStores]
@ 2022-03-19 23:57 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2022-03-19 23:57 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 38813 bytes --]
CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: Evan Quan <evan.quan@amd.com>
CC: Alex Deucher <alexander.deucher@amd.com>
CC: Lijo Lazar <lijo.lazar@amd.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 6d72dda014a4753974eb08950089ddf71fec4f60
commit: 837d542a09cd533055423dfca7e621a9c1d13c5b [436/13576] drm/amd/pm: relocate the power related headers
:::::: branch date: 2 days ago
:::::: commit date: 9 weeks ago
config: riscv-randconfig-c006-20220310 (https://download.01.org/0day-ci/archive/20220320/202203200715.QV3vyi8I-lkp(a)intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 276ca87382b8f16a65bddac700202924228982f6)
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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=837d542a09cd533055423dfca7e621a9c1d13c5b
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout 837d542a09cd533055423dfca7e621a9c1d13c5b
# save the config file to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv clang-analyzer
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
clang-analyzer warnings: (new ones prefixed by >>)
^~~~~~~~~~~~~~~~~~~~~~~~~~
include/drm/ttm/ttm_bo_api.h:240:6: note: Assuming the condition is true
if (!kref_get_unless_zero(&bo->kref))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/drm/ttm/ttm_bo_api.h:240:2: note: Taking true branch
if (!kref_get_unless_zero(&bo->kref))
^
include/drm/ttm/ttm_bo_api.h:241:3: note: Returning null pointer, which participates in a condition later
return NULL;
^~~~~~~~~~~
drivers/gpu/drm/ttm/ttm_bo.c:693:9: note: Returning from 'ttm_bo_get_unless_zero'
if (!ttm_bo_get_unless_zero(bo)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/ttm/ttm_bo.c:693:4: note: Taking true branch
if (!ttm_bo_get_unless_zero(bo)) {
^
drivers/gpu/drm/ttm/ttm_bo.c:694:9: note: Assuming 'locked' is false
if (locked)
^~~~~~
drivers/gpu/drm/ttm/ttm_bo.c:694:5: note: Taking false branch
if (locked)
^
drivers/gpu/drm/ttm/ttm_bo.c:696:5: note: Execution continues on line 682
continue;
^
drivers/gpu/drm/ttm/ttm_bo.c:682:3: note: Dereference of null pointer
list_for_each_entry(bo, &man->lru[i], lru) {
^
include/linux/list.h:632:13: note: expanded from macro 'list_for_each_entry'
pos = list_next_entry(pos, member))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/list.h:557:2: note: expanded from macro 'list_next_entry'
list_entry((pos)->member.next, typeof(*(pos)), member)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/list.h:513:2: note: expanded from macro 'list_entry'
container_of(ptr, type, member)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/container_of.h:18:25: note: expanded from macro 'container_of'
void *__mptr = (void *)(ptr); \
^~~~~
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
8 warnings generated.
Suppressed 8 warnings (8 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
13 warnings generated.
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2570:21: warning: Access to field 'enable_dte' results in a dereference of a null pointer (loaded from variable 'si_pi') [clang-analyzer-core.NullDereference]
si_pi->enable_dte = false;
~~~~~ ^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2561:32: note: Calling 'si_get_pi'
struct si_power_info *si_pi = si_get_pi(adev);
^~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:1853:2: note: 'pi' initialized here
struct si_power_info *pi = adev->pm.dpm.priv;
^~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:1854:2: note: Returning pointer (loaded from 'pi')
return pi;
^~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2561:32: note: Returning from 'si_get_pi'
struct si_power_info *si_pi = si_get_pi(adev);
^~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2561:2: note: 'si_pi' initialized here
struct si_power_info *si_pi = si_get_pi(adev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2569:6: note: Assuming 'dte_data' is equal to NULL
if (dte_data == NULL)
^~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2569:2: note: Taking true branch
if (dte_data == NULL)
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2570:21: note: Access to field 'enable_dte' results in a dereference of a null pointer (loaded from variable 'si_pi')
si_pi->enable_dte = false;
~~~~~ ^
>> drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2927:5: warning: Value stored to 'smc_result' is never read [clang-analyzer-deadcode.DeadStores]
smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableDTE);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2927:5: note: Value stored to 'smc_result' is never read
smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableDTE);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2929:4: warning: Value stored to 'smc_result' is never read [clang-analyzer-deadcode.DeadStores]
smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableCac);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2929:4: note: Value stored to 'smc_result' is never read
smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableCac);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2934:5: warning: Value stored to 'smc_result' is never read [clang-analyzer-deadcode.DeadStores]
smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_CACLongTermAvgDisable);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2934:5: note: Value stored to 'smc_result' is never read
smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_CACLongTermAvgDisable);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:4668:7: warning: Value stored to 'voltage_found' is never read [clang-analyzer-deadcode.DeadStores]
voltage_found = true;
^ ~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:4668:7: note: Value stored to 'voltage_found' is never read
voltage_found = true;
^ ~~~~
Suppressed 8 warnings (8 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
drivers/video/backlight/adp8860_bl.c:230:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = adp8860_write(client, ADP8860_ISCFR, pdata->led_fade_law);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/video/backlight/adp8860_bl.c:230:2: note: Value stored to 'ret' is never read
ret = adp8860_write(client, ADP8860_ISCFR, pdata->led_fade_law);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
drivers/gpu/drm/amd/amdgpu/../display/dc/gpio/gpio_service.c:439:3: warning: Value stored to 'id' is never read [clang-analyzer-deadcode.DeadStores]
id = GPIO_ID_HPD;
^ ~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/dc/gpio/gpio_service.c:439:3: note: Value stored to 'id' is never read
id = GPIO_ID_HPD;
^ ~~~~~~~~~~~
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
drivers/media/v4l2-core/v4l2-mc.c:176:4: warning: Value stored to 'if_aud' is never read [clang-analyzer-deadcode.DeadStores]
if_aud = tuner;
^ ~~~~~
drivers/media/v4l2-core/v4l2-mc.c:176:4: note: Value stored to 'if_aud' is never read
if_aud = tuner;
^ ~~~~~
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
drivers/media/v4l2-core/v4l2-async.c:447:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct device *dev =
^~~
drivers/media/v4l2-core/v4l2-async.c:447:17: note: Value stored to 'dev' during its initialization is never read
struct device *dev =
^~~
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
--
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:277:13: note: Assuming the condition is false
} else if (last_render_time_in_us > (max_render_time_in_us + in_out_vrr->btr.margin_in_us / 2)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:277:9: note: Taking false branch
} else if (last_render_time_in_us > (max_render_time_in_us + in_out_vrr->btr.margin_in_us / 2)) {
^
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:285:6: note: Assuming field 'btr_active' is true
if (!in_out_vrr->btr.btr_active) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:285:2: note: Taking false branch
if (!in_out_vrr->btr.btr_active) {
^
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:307:7: note: Assuming 'mid_point_frames_ceil' is > 0
if (mid_point_frames_ceil > 0) {
^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:307:3: note: Taking true branch
if (mid_point_frames_ceil > 0) {
^
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:311:6: note: Assuming 'frame_time_in_us' is >= field 'mid_point_in_us'
(in_out_vrr->btr.mid_point_in_us >
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:311:5: note: '?' condition is false
(in_out_vrr->btr.mid_point_in_us >
^
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:320:3: note: Value assigned to 'mid_point_frames_floor'
mid_point_frames_floor = last_render_time_in_us /
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:323:7: note: Assuming 'mid_point_frames_floor' is <= 0
if (mid_point_frames_floor > 0) {
^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:323:3: note: Taking false branch
if (mid_point_frames_floor > 0) {
^
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:339:7: note: Assuming the condition is true
if ((last_render_time_in_us / mid_point_frames_ceil) < in_out_vrr->min_duration_in_us) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:339:3: note: Taking true branch
if ((last_render_time_in_us / mid_point_frames_ceil) < in_out_vrr->min_duration_in_us) {
^
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:344:4: note: The value 0 is assigned to 'frames_to_insert'
frames_to_insert = mid_point_frames_floor;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:367:7: note: Assuming 'delta_from_mid_point_in_us_1' is >= 'delta_from_mid_point_in_us_2'
if (delta_from_mid_point_in_us_1 < delta_from_mid_point_in_us_2) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:367:3: note: Taking false branch
if (delta_from_mid_point_in_us_1 < delta_from_mid_point_in_us_2) {
^
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:374:7: note: Assuming field 'frames_to_insert' is equal to 0
if (in_out_vrr->btr.frames_to_insert != 0 &&
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:374:45: note: Left side of '&&' is false
if (in_out_vrr->btr.frames_to_insert != 0 &&
^
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:386:30: note: Division by zero
if (last_render_time_in_us / frames_to_insert <
~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:1168:3: warning: Value stored to 'average_render_time_in_us' is never read [clang-analyzer-deadcode.DeadStores]
average_render_time_in_us /= DC_PLANE_UPDATE_TIMES_MAX;
^
drivers/gpu/drm/amd/amdgpu/../display/modules/freesync/freesync.c:1168:3: note: Value stored to 'average_render_time_in_us' is never read
Suppressed 9 warnings (8 in non-user code, 1 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:161:6: warning: Access to field 'hwmgr_func' results in a dereference of a null pointer (loaded from variable 'hwmgr') [clang-analyzer-core.NullDereference]
if (hwmgr->hwmgr_func->notify_cac_buffer_info)
^
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:181:6: note: Assuming 'hwmgr' is null
if (hwmgr && hwmgr->pm_en) {
^~~~~
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:181:12: note: Left side of '&&' is false
if (hwmgr && hwmgr->pm_en) {
^
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:187:6: note: Assuming field 'smu_prv_buffer_size' is not equal to 0
if (adev->pm.smu_prv_buffer_size != 0)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:187:2: note: Taking true branch
if (adev->pm.smu_prv_buffer_size != 0)
^
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:188:3: note: Calling 'pp_reserve_vram_for_smu'
pp_reserve_vram_for_smu(adev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:150:2: note: 'hwmgr' initialized to a null pointer value
struct pp_hwmgr *hwmgr = adev->powerplay.pp_handle;
^~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:152:6: note: Assuming the condition is false
if (amdgpu_bo_create_kernel(adev, adev->pm.smu_prv_buffer_size,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:152:2: note: Taking false branch
if (amdgpu_bo_create_kernel(adev, adev->pm.smu_prv_buffer_size,
^
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:161:6: note: Access to field 'hwmgr_func' results in a dereference of a null pointer (loaded from variable 'hwmgr')
if (hwmgr->hwmgr_func->notify_cac_buffer_info)
^~~~~
Suppressed 9 warnings (9 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
8 warnings generated.
Suppressed 8 warnings (8 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
>> drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1463:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = amdgpu_kv_copy_bytes_to_smc(adev,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1463:3: note: Value stored to 'ret' is never read
ret = amdgpu_kv_copy_bytes_to_smc(adev,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1662:13: warning: The result of the left shift is undefined due to shifting by '255', which is greater or equal to the width of type 'int' [clang-analyzer-core.UndefinedBinaryOperatorResult]
(1 << pi->acp_boot_level));
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1950:6: note: Assuming field 'bapm_enable' is false
if (pi->bapm_enable) {
^~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1950:2: note: Taking false branch
if (pi->bapm_enable) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1958:6: note: Assuming field 'asic_type' is not equal to CHIP_KABINI
if (adev->asic_type == CHIP_KABINI || adev->asic_type == CHIP_MULLINS) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1958:6: note: Left side of '||' is false
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1958:40: note: Assuming field 'asic_type' is not equal to CHIP_MULLINS
if (adev->asic_type == CHIP_KABINI || adev->asic_type == CHIP_MULLINS) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1958:2: note: Taking false branch
if (adev->asic_type == CHIP_KABINI || adev->asic_type == CHIP_MULLINS) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1988:7: note: Assuming field 'enable_dpm' is true
if (pi->enable_dpm) {
^~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1988:3: note: Taking true branch
if (pi->enable_dpm) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1992:8: note: Assuming 'ret' is 0
if (ret) {
^~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1992:4: note: Taking false branch
if (ret) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:2004:8: note: Assuming 'ret' is 0
if (ret) {
^~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:2004:4: note: Taking false branch
if (ret) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:2008:4: note: Calling 'kv_update_acp_boot_level'
kv_update_acp_boot_level(adev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1656:6: note: Assuming field 'caps_stable_p_state' is false
if (!pi->caps_stable_p_state) {
^~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1656:2: note: Taking true branch
if (!pi->caps_stable_p_state) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1657:20: note: Calling 'kv_get_acp_boot_level'
acp_boot_level = kv_get_acp_boot_level(adev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1640:14: note: Assuming 'i' is >= field 'count'
for (i = 0; i < table->count; i++) {
^~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1640:2: note: Loop condition is false. Execution continues on line 1645
for (i = 0; i < table->count; i++) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1645:6: note: 'i' is >= field 'count'
if (i >= table->count)
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1645:2: note: Taking true branch
if (i >= table->count)
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1646:3: note: The value 255 is assigned to 'i'
i = table->count - 1;
^~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1648:2: note: Returning the value 255 (loaded from 'i')
return i;
^~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1657:20: note: Returning from 'kv_get_acp_boot_level'
acp_boot_level = kv_get_acp_boot_level(adev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1657:3: note: The value 255 is assigned to 'acp_boot_level'
acp_boot_level = kv_get_acp_boot_level(adev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1658:7: note: Assuming 'acp_boot_level' is not equal to field 'acp_boot_level'
if (acp_boot_level != pi->acp_boot_level) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1658:3: note: Taking true branch
if (acp_boot_level != pi->acp_boot_level) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1659:4: note: The value 255 is assigned to field 'acp_boot_level'
pi->acp_boot_level = acp_boot_level;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1662:13: note: The result of the left shift is undefined due to shifting by '255', which is greater or equal to the width of type 'int'
(1 << pi->acp_boot_level));
^ ~~~~~~~~~~~~~~~~~~
Suppressed 8 warnings (8 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
8 warnings generated.
Suppressed 8 warnings (8 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
8 warnings generated.
Suppressed 8 warnings (8 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
8 warnings generated.
Suppressed 8 warnings (8 in non-user code).
vim +/smc_result +2927 drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2892
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2893 static int si_enable_smc_cac(struct amdgpu_device *adev,
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2894 struct amdgpu_ps *amdgpu_new_state,
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2895 bool enable)
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2896 {
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2897 struct ni_power_info *ni_pi = ni_get_pi(adev);
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2898 struct si_power_info *si_pi = si_get_pi(adev);
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2899 PPSMC_Result smc_result;
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2900 int ret = 0;
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2901
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2902 if (ni_pi->enable_cac) {
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2903 if (enable) {
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2904 if (!si_should_disable_uvd_powertune(adev, amdgpu_new_state)) {
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2905 if (ni_pi->support_cac_long_term_average) {
6861c837e28e1b drivers/gpu/drm/amd/amdgpu/si_dpm.c Alex Deucher 2016-09-13 2906 smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_CACLongTermAvgEnable);
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2907 if (smc_result != PPSMC_Result_OK)
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2908 ni_pi->support_cac_long_term_average = false;
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2909 }
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2910
6861c837e28e1b drivers/gpu/drm/amd/amdgpu/si_dpm.c Alex Deucher 2016-09-13 2911 smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_EnableCac);
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2912 if (smc_result != PPSMC_Result_OK) {
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2913 ret = -EINVAL;
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2914 ni_pi->cac_enabled = false;
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2915 } else {
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2916 ni_pi->cac_enabled = true;
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2917 }
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2918
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2919 if (si_pi->enable_dte) {
6861c837e28e1b drivers/gpu/drm/amd/amdgpu/si_dpm.c Alex Deucher 2016-09-13 2920 smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_EnableDTE);
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2921 if (smc_result != PPSMC_Result_OK)
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2922 ret = -EINVAL;
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2923 }
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2924 }
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2925 } else if (ni_pi->cac_enabled) {
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2926 if (si_pi->enable_dte)
6861c837e28e1b drivers/gpu/drm/amd/amdgpu/si_dpm.c Alex Deucher 2016-09-13 @2927 smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableDTE);
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2928
6861c837e28e1b drivers/gpu/drm/amd/amdgpu/si_dpm.c Alex Deucher 2016-09-13 2929 smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableCac);
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2930
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2931 ni_pi->cac_enabled = false;
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2932
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2933 if (ni_pi->support_cac_long_term_average)
6861c837e28e1b drivers/gpu/drm/amd/amdgpu/si_dpm.c Alex Deucher 2016-09-13 2934 smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_CACLongTermAvgDisable);
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2935 }
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2936 }
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2937 return ret;
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2938 }
841686df9f7d29 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2939
:::::: The code at line 2927 was first introduced by commit
:::::: 6861c837e28e1b1300a1b24ddab748c8ee50da3b drm/amdgpu/si/dpm: fix symbol conflicts with radeon
:::::: TO: Alex Deucher <alexander.deucher@amd.com>
:::::: CC: Alex Deucher <alexander.deucher@amd.com>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
^ permalink raw reply [flat|nested] 2+ messages in thread
* [linux-next:master 436/13576] drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2927:5: warning: Value stored to 'smc_result' is never read [clang-analyzer-deadcode.DeadStores]
@ 2022-03-19 3:59 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2022-03-19 3:59 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 37961 bytes --]
CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: Evan Quan <evan.quan@amd.com>
CC: Alex Deucher <alexander.deucher@amd.com>
CC: Lijo Lazar <lijo.lazar@amd.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 6d72dda014a4753974eb08950089ddf71fec4f60
commit: 837d542a09cd533055423dfca7e621a9c1d13c5b [436/13576] drm/amd/pm: relocate the power related headers
:::::: branch date: 19 hours ago
:::::: commit date: 9 weeks ago
config: riscv-randconfig-c006-20220310 (https://download.01.org/0day-ci/archive/20220319/202203191135.s8YHWkWk-lkp(a)intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 276ca87382b8f16a65bddac700202924228982f6)
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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=837d542a09cd533055423dfca7e621a9c1d13c5b
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout 837d542a09cd533055423dfca7e621a9c1d13c5b
# save the config file to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv clang-analyzer
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
clang-analyzer warnings: (new ones prefixed by >>)
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:167:18: note: The left operand of '*' is a garbage value
return clk_freq * 100;
~~~~~~~~ ^
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:181:18: warning: The left operand of '*' is a garbage value [clang-analyzer-core.UndefinedBinaryOperatorResult]
return clk_freq * 100;
~~~~~~~~ ^
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:173:2: note: 'clk_freq' declared without an initial value
uint32_t clk_freq;
^~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:177:10: note: Assuming 'low' is true
low ? &clk_freq : NULL,
^~~
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:177:10: note: '?' condition is true
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:178:11: note: 'low' is true
!low ? &clk_freq : NULL);
^~~
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:178:10: note: '?' condition is false
!low ? &clk_freq : NULL);
^
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:176:8: note: Calling 'smu_get_dpm_freq_range'
ret = smu_get_dpm_freq_range(smu, SMU_GFXCLK,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:140:7: note: 'min' is non-null
if (!min && !max)
^~~
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:140:11: note: Left side of '&&' is false
if (!min && !max)
^
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:145:6: note: Assuming field 'get_dpm_ultimate_freq' is null
if (smu->ppt_funcs->get_dpm_ultimate_freq)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:145:2: note: Taking false branch
if (smu->ppt_funcs->get_dpm_ultimate_freq)
^
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:153:2: note: Returning without writing to '*min'
return ret;
^
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:153:2: note: Returning zero (loaded from 'ret'), which participates in a condition later
return ret;
^~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:176:8: note: Returning from 'smu_get_dpm_freq_range'
ret = smu_get_dpm_freq_range(smu, SMU_GFXCLK,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:179:6: note: 'ret' is 0
if (ret)
^~~
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:179:2: note: Taking false branch
if (ret)
^
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:181:18: note: The left operand of '*' is a garbage value
return clk_freq * 100;
~~~~~~~~ ^
Suppressed 8 warnings (8 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
8 warnings generated.
Suppressed 8 warnings (8 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
13 warnings generated.
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2570:21: warning: Access to field 'enable_dte' results in a dereference of a null pointer (loaded from variable 'si_pi') [clang-analyzer-core.NullDereference]
si_pi->enable_dte = false;
~~~~~ ^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2561:32: note: Calling 'si_get_pi'
struct si_power_info *si_pi = si_get_pi(adev);
^~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:1853:2: note: 'pi' initialized here
struct si_power_info *pi = adev->pm.dpm.priv;
^~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:1854:2: note: Returning pointer (loaded from 'pi')
return pi;
^~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2561:32: note: Returning from 'si_get_pi'
struct si_power_info *si_pi = si_get_pi(adev);
^~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2561:2: note: 'si_pi' initialized here
struct si_power_info *si_pi = si_get_pi(adev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2569:6: note: Assuming 'dte_data' is equal to NULL
if (dte_data == NULL)
^~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2569:2: note: Taking true branch
if (dte_data == NULL)
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2570:21: note: Access to field 'enable_dte' results in a dereference of a null pointer (loaded from variable 'si_pi')
si_pi->enable_dte = false;
~~~~~ ^
>> drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2927:5: warning: Value stored to 'smc_result' is never read [clang-analyzer-deadcode.DeadStores]
smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableDTE);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2927:5: note: Value stored to 'smc_result' is never read
smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableDTE);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2929:4: warning: Value stored to 'smc_result' is never read [clang-analyzer-deadcode.DeadStores]
smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableCac);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2929:4: note: Value stored to 'smc_result' is never read
smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableCac);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2934:5: warning: Value stored to 'smc_result' is never read [clang-analyzer-deadcode.DeadStores]
smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_CACLongTermAvgDisable);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2934:5: note: Value stored to 'smc_result' is never read
smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_CACLongTermAvgDisable);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:4668:7: warning: Value stored to 'voltage_found' is never read [clang-analyzer-deadcode.DeadStores]
voltage_found = true;
^ ~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:4668:7: note: Value stored to 'voltage_found' is never read
voltage_found = true;
^ ~~~~
Suppressed 8 warnings (8 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
drivers/media/i2c/imx274.c:955:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct device *dev = &imx274->client->dev;
^~~ ~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/imx274.c:955:17: note: Value stored to 'dev' during its initialization is never read
struct device *dev = &imx274->client->dev;
^~~ ~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/imx274.c:1014:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct device *dev = &imx274->client->dev;
^~~ ~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/imx274.c:1014:17: note: Value stored to 'dev' during its initialization is never read
struct device *dev = &imx274->client->dev;
^~~ ~~~~~~~~~~~~~~~~~~~~
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (4 in non-user code, 1 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
drivers/gpu/drm/r128/r128_cce.c:829:3: warning: Value stored to 'buf_priv' is never read [clang-analyzer-deadcode.DeadStores]
buf_priv = buf->dev_private;
^ ~~~~~~~~~~~~~~~~
drivers/gpu/drm/r128/r128_cce.c:829:3: note: Value stored to 'buf_priv' is never read
buf_priv = buf->dev_private;
^ ~~~~~~~~~~~~~~~~
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
7 warnings generated.
drivers/staging/sm750fb/sm750.c:369:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = 0;
^ ~
drivers/staging/sm750fb/sm750.c:369:2: note: Value stored to 'ret' is never read
ret = 0;
^ ~
drivers/staging/sm750fb/sm750.c:485:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = 0;
^ ~
drivers/staging/sm750fb/sm750.c:485:2: note: Value stored to 'ret' is never read
ret = 0;
^ ~
drivers/staging/sm750fb/sm750.c:703:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = 0;
^ ~
drivers/staging/sm750fb/sm750.c:703:2: note: Value stored to 'ret' is never read
ret = 0;
^ ~
drivers/staging/sm750fb/sm750.c:1137:4: warning: Call to function 'strcat' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcat'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcat(tmp, opt);
^~~~~~
drivers/staging/sm750fb/sm750.c:1137:4: note: Call to function 'strcat' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcat'. CWE-119
strcat(tmp, opt);
^~~~~~
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
drivers/staging/sm750fb/sm750_hw.c:33:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = 0;
^ ~
drivers/staging/sm750fb/sm750_hw.c:33:2: note: Value stored to 'ret' is never read
ret = 0;
^ ~
drivers/staging/sm750fb/sm750_hw.c:261:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = 0;
--
^~~~~~ ~~~~~~~~~~~~~
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
fs/ubifs/file.c:1376:21: warning: Value stored to 'c' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct ubifs_info *c = inode->i_sb->s_fs_info;
^ ~~~~~~~~~~~~~~~~~~~~~~
fs/ubifs/file.c:1376:21: note: Value stored to 'c' during its initialization is never read
struct ubifs_info *c = inode->i_sb->s_fs_info;
^ ~~~~~~~~~~~~~~~~~~~~~~
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
3 warnings generated.
Suppressed 3 warnings (3 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:161:6: warning: Access to field 'hwmgr_func' results in a dereference of a null pointer (loaded from variable 'hwmgr') [clang-analyzer-core.NullDereference]
if (hwmgr->hwmgr_func->notify_cac_buffer_info)
^
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:181:6: note: Assuming 'hwmgr' is null
if (hwmgr && hwmgr->pm_en) {
^~~~~
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:181:12: note: Left side of '&&' is false
if (hwmgr && hwmgr->pm_en) {
^
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:187:6: note: Assuming field 'smu_prv_buffer_size' is not equal to 0
if (adev->pm.smu_prv_buffer_size != 0)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:187:2: note: Taking true branch
if (adev->pm.smu_prv_buffer_size != 0)
^
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:188:3: note: Calling 'pp_reserve_vram_for_smu'
pp_reserve_vram_for_smu(adev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:150:2: note: 'hwmgr' initialized to a null pointer value
struct pp_hwmgr *hwmgr = adev->powerplay.pp_handle;
^~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:152:6: note: Assuming the condition is false
if (amdgpu_bo_create_kernel(adev, adev->pm.smu_prv_buffer_size,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:152:2: note: Taking false branch
if (amdgpu_bo_create_kernel(adev, adev->pm.smu_prv_buffer_size,
^
drivers/gpu/drm/amd/amdgpu/../pm/powerplay/amd_powerplay.c:161:6: note: Access to field 'hwmgr_func' results in a dereference of a null pointer (loaded from variable 'hwmgr')
if (hwmgr->hwmgr_func->notify_cac_buffer_info)
^~~~~
Suppressed 9 warnings (9 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
8 warnings generated.
Suppressed 8 warnings (8 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
>> drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1463:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = amdgpu_kv_copy_bytes_to_smc(adev,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1463:3: note: Value stored to 'ret' is never read
ret = amdgpu_kv_copy_bytes_to_smc(adev,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1662:13: warning: The result of the left shift is undefined due to shifting by '255', which is greater or equal to the width of type 'int' [clang-analyzer-core.UndefinedBinaryOperatorResult]
(1 << pi->acp_boot_level));
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1950:6: note: Assuming field 'bapm_enable' is false
if (pi->bapm_enable) {
^~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1950:2: note: Taking false branch
if (pi->bapm_enable) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1958:6: note: Assuming field 'asic_type' is not equal to CHIP_KABINI
if (adev->asic_type == CHIP_KABINI || adev->asic_type == CHIP_MULLINS) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1958:6: note: Left side of '||' is false
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1958:40: note: Assuming field 'asic_type' is not equal to CHIP_MULLINS
if (adev->asic_type == CHIP_KABINI || adev->asic_type == CHIP_MULLINS) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1958:2: note: Taking false branch
if (adev->asic_type == CHIP_KABINI || adev->asic_type == CHIP_MULLINS) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1988:7: note: Assuming field 'enable_dpm' is true
if (pi->enable_dpm) {
^~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1988:3: note: Taking true branch
if (pi->enable_dpm) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1992:8: note: Assuming 'ret' is 0
if (ret) {
^~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1992:4: note: Taking false branch
if (ret) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:2004:8: note: Assuming 'ret' is 0
if (ret) {
^~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:2004:4: note: Taking false branch
if (ret) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:2008:4: note: Calling 'kv_update_acp_boot_level'
kv_update_acp_boot_level(adev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1656:6: note: Assuming field 'caps_stable_p_state' is false
if (!pi->caps_stable_p_state) {
^~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1656:2: note: Taking true branch
if (!pi->caps_stable_p_state) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1657:20: note: Calling 'kv_get_acp_boot_level'
acp_boot_level = kv_get_acp_boot_level(adev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1640:14: note: Assuming 'i' is >= field 'count'
for (i = 0; i < table->count; i++) {
^~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1640:2: note: Loop condition is false. Execution continues on line 1645
for (i = 0; i < table->count; i++) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1645:6: note: 'i' is >= field 'count'
if (i >= table->count)
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1645:2: note: Taking true branch
if (i >= table->count)
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1646:3: note: The value 255 is assigned to 'i'
i = table->count - 1;
^~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1648:2: note: Returning the value 255 (loaded from 'i')
return i;
^~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1657:20: note: Returning from 'kv_get_acp_boot_level'
acp_boot_level = kv_get_acp_boot_level(adev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1657:3: note: The value 255 is assigned to 'acp_boot_level'
acp_boot_level = kv_get_acp_boot_level(adev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1658:7: note: Assuming 'acp_boot_level' is not equal to field 'acp_boot_level'
if (acp_boot_level != pi->acp_boot_level) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1658:3: note: Taking true branch
if (acp_boot_level != pi->acp_boot_level) {
^
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1659:4: note: The value 255 is assigned to field 'acp_boot_level'
pi->acp_boot_level = acp_boot_level;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1662:13: note: The result of the left shift is undefined due to shifting by '255', which is greater or equal to the width of type 'int'
(1 << pi->acp_boot_level));
^ ~~~~~~~~~~~~~~~~~~
Suppressed 8 warnings (8 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
7 warnings generated.
drivers/media/tuners/xc4000.c:1104:2: warning: 3rd function call argument is an uninitialized value [clang-analyzer-core.CallAndMessage]
dprintk(1, "*** ADC envelope (0-1023) = %d\n", adc_envelope);
^
drivers/media/tuners/xc4000.c:53:2: note: expanded from macro 'dprintk'
printk(KERN_INFO "%s: " fmt, "xc4000", ## arg)
^
include/linux/printk.h:450:44: note: expanded from macro 'printk'
vim +/smc_result +2927 drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2892
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2893 static int si_enable_smc_cac(struct amdgpu_device *adev,
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2894 struct amdgpu_ps *amdgpu_new_state,
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2895 bool enable)
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2896 {
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2897 struct ni_power_info *ni_pi = ni_get_pi(adev);
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2898 struct si_power_info *si_pi = si_get_pi(adev);
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2899 PPSMC_Result smc_result;
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2900 int ret = 0;
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2901
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2902 if (ni_pi->enable_cac) {
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2903 if (enable) {
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2904 if (!si_should_disable_uvd_powertune(adev, amdgpu_new_state)) {
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2905 if (ni_pi->support_cac_long_term_average) {
6861c837e28e1b1 drivers/gpu/drm/amd/amdgpu/si_dpm.c Alex Deucher 2016-09-13 2906 smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_CACLongTermAvgEnable);
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2907 if (smc_result != PPSMC_Result_OK)
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2908 ni_pi->support_cac_long_term_average = false;
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2909 }
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2910
6861c837e28e1b1 drivers/gpu/drm/amd/amdgpu/si_dpm.c Alex Deucher 2016-09-13 2911 smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_EnableCac);
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2912 if (smc_result != PPSMC_Result_OK) {
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2913 ret = -EINVAL;
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2914 ni_pi->cac_enabled = false;
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2915 } else {
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2916 ni_pi->cac_enabled = true;
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2917 }
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2918
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2919 if (si_pi->enable_dte) {
6861c837e28e1b1 drivers/gpu/drm/amd/amdgpu/si_dpm.c Alex Deucher 2016-09-13 2920 smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_EnableDTE);
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2921 if (smc_result != PPSMC_Result_OK)
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2922 ret = -EINVAL;
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2923 }
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2924 }
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2925 } else if (ni_pi->cac_enabled) {
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2926 if (si_pi->enable_dte)
6861c837e28e1b1 drivers/gpu/drm/amd/amdgpu/si_dpm.c Alex Deucher 2016-09-13 @2927 smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableDTE);
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2928
6861c837e28e1b1 drivers/gpu/drm/amd/amdgpu/si_dpm.c Alex Deucher 2016-09-13 @2929 smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_MSG_DisableCac);
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2930
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2931 ni_pi->cac_enabled = false;
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2932
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2933 if (ni_pi->support_cac_long_term_average)
6861c837e28e1b1 drivers/gpu/drm/amd/amdgpu/si_dpm.c Alex Deucher 2016-09-13 2934 smc_result = amdgpu_si_send_msg_to_smc(adev, PPSMC_CACLongTermAvgDisable);
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2935 }
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2936 }
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2937 return ret;
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2938 }
841686df9f7d294 drivers/gpu/drm/amd/amdgpu/si_dpm.c Maruthi Bayyavarapu 2016-08-01 2939
:::::: The code at line 2927 was first introduced by commit
:::::: 6861c837e28e1b1300a1b24ddab748c8ee50da3b drm/amdgpu/si/dpm: fix symbol conflicts with radeon
:::::: TO: Alex Deucher <alexander.deucher@amd.com>
:::::: CC: Alex Deucher <alexander.deucher@amd.com>
---
0-DAY CI Kernel Test Service
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2022-03-19 23:57 [linux-next:master 436/13576] drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/si_dpm.c:2927:5: warning: Value stored to 'smc_result' is never read [clang-analyzer-deadcode.DeadStores] kernel test robot
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