* drivers/media/i2c/hi846.c:1494:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
@ 2022-03-18 18:16 kernel test robot
0 siblings, 0 replies; 4+ messages in thread
From: kernel test robot @ 2022-03-18 18:16 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 19945 bytes --]
CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: linux-kernel(a)vger.kernel.org
TO: Martin Kepplinger <martin.kepplinger@puri.sm>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: linux-media(a)vger.kernel.org
CC: Pavel Machek <pavel@ucw.cz>
CC: Sakari Ailus <sakari.ailus@linux.intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 551acdc3c3d2b6bc97f11e31dcf960bc36343bfc
commit: e8c0882685f9152f0d729664a12bcbe749cb7736 media: i2c: add driver for the SK Hynix Hi-846 8M pixel camera
date: 5 months ago
:::::: branch date: 22 hours ago
:::::: commit date: 5 months ago
config: riscv-randconfig-c006-20220307 (https://download.01.org/0day-ci/archive/20220319/202203190247.dEZtfdcm-lkp(a)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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8c0882685f9152f0d729664a12bcbe749cb7736
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout e8c0882685f9152f0d729664a12bcbe749cb7736
# 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 >>)
6 warnings generated.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
7 warnings generated.
drivers/soc/qcom/qmi_encdec.c:332:4: warning: Value stored to 'rc' is never read [clang-analyzer-deadcode.DeadStores]
rc = qmi_encode_basic_elem(&opt_flag_value, buf_src,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/soc/qcom/qmi_encdec.c:332:4: note: Value stored to 'rc' is never read
rc = qmi_encode_basic_elem(&opt_flag_value, buf_src,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 6 warnings (6 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.
15 warnings generated.
Suppressed 15 warnings (15 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.
11 warnings generated.
Suppressed 11 warnings (11 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.
Suppressed 6 warnings (6 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.
15 warnings generated.
Suppressed 15 warnings (15 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
6 warnings generated.
Suppressed 6 warnings (6 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.
9 warnings generated.
drivers/accessibility/speakup/speakup_apollo.c:147:3: warning: Value stored to 'jiffy_delta_val' is never read [clang-analyzer-deadcode.DeadStores]
jiffy_delta_val = jiffy_delta->u.n.value;
^ ~~~~~~~~~~~~~~~~~~~~~~
drivers/accessibility/speakup/speakup_apollo.c:147:3: note: Value stored to 'jiffy_delta_val' is never read
jiffy_delta_val = jiffy_delta->u.n.value;
^ ~~~~~~~~~~~~~~~~~~~~~~
drivers/accessibility/speakup/speakup_apollo.c:148:3: warning: Value stored to 'full_time_val' is never read [clang-analyzer-deadcode.DeadStores]
full_time_val = full_time->u.n.value;
^ ~~~~~~~~~~~~~~~~~~~~
drivers/accessibility/speakup/speakup_apollo.c:148:3: note: Value stored to 'full_time_val' is never read
full_time_val = full_time->u.n.value;
^ ~~~~~~~~~~~~~~~~~~~~
drivers/accessibility/speakup/speakup_apollo.c:149:3: warning: Value stored to 'delay_time_val' is never read [clang-analyzer-deadcode.DeadStores]
delay_time_val = delay_time->u.n.value;
^ ~~~~~~~~~~~~~~~~~~~~~
drivers/accessibility/speakup/speakup_apollo.c:149:3: note: Value stored to 'delay_time_val' is never read
delay_time_val = delay_time->u.n.value;
^ ~~~~~~~~~~~~~~~~~~~~~
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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/i2c/ccs-pll.c:93:15: warning: Value stored to 's' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
const char *s = pll_string(br->which);
^ ~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/ccs-pll.c:93:15: note: Value stored to 's' during its initialization is never read
const char *s = pll_string(br->which);
^ ~~~~~~~~~~~~~~~~~~~~~
Suppressed 6 warnings (6 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.
9 warnings generated.
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.
12 warnings generated.
>> drivers/media/i2c/hi846.c:1494:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1494:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/media/i2c/hi846.c:1764:2: warning: Value stored to 'tgt_fps' is never read [clang-analyzer-deadcode.DeadStores]
tgt_fps = hi846->cur_mode->fps;
^ ~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1764:2: note: Value stored to 'tgt_fps' is never read
tgt_fps = hi846->cur_mode->fps;
^ ~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1805:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = v4l2_get_subdevdata(sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1805:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = v4l2_get_subdevdata(sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~
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.
9 warnings generated.
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.
10 warnings generated.
drivers/media/i2c/imx258.c:781:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/imx258.c:781:3: note: Value stored to 'ret' is never read
ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
9 warnings generated.
Suppressed 9 warnings (6 in non-user code, 3 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.
2 warnings generated.
Suppressed 2 warnings (2 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.
2 warnings generated.
Suppressed 2 warnings (2 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.
2 warnings generated.
Suppressed 2 warnings (2 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.
2 warnings generated.
Suppressed 2 warnings (2 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.
12 warnings generated.
lib/zstd/decompress.c:1557:4: warning: Value stored to 'remainingSize' is never read [clang-analyzer-deadcode.DeadStores]
remainingSize -= 4;
^ ~
lib/zstd/decompress.c:1557:4: note: Value stored to 'remainingSize' is never read
remainingSize -= 4;
^ ~
Suppressed 11 warnings (6 in non-user code, 5 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.
6 warnings generated.
Suppressed 6 warnings (6 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.
10 warnings generated.
Suppressed 10 warnings (10 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.
9 warnings generated.
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.
9 warnings generated.
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.
9 warnings generated.
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.
9 warnings generated.
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.
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.
6 warnings generated.
Suppressed 6 warnings (6 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.
Suppressed 7 warnings (5 in non-user code, 2 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.
6 warnings generated.
drivers/media/mc/mc-request.c:190:23: warning: Value stored to 'mdev' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct media_device *mdev = req->mdev;
^~~~ ~~~~~~~~~
drivers/media/mc/mc-request.c:190:23: note: Value stored to 'mdev' during its initialization is never read
struct media_device *mdev = req->mdev;
^~~~ ~~~~~~~~~
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.
15 warnings generated.
Suppressed 15 warnings (15 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.
15 warnings generated.
Suppressed 15 warnings (15 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.
15 warnings generated.
Suppressed 15 warnings (15 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.
vim +/client +1494 drivers/media/i2c/hi846.c
e8c0882685f915 Martin Kepplinger 2021-09-06 1491
e8c0882685f915 Martin Kepplinger 2021-09-06 1492 static int hi846_set_video_mode(struct hi846 *hi846, int fps)
e8c0882685f915 Martin Kepplinger 2021-09-06 1493 {
e8c0882685f915 Martin Kepplinger 2021-09-06 @1494 struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
e8c0882685f915 Martin Kepplinger 2021-09-06 1495 u64 frame_length;
e8c0882685f915 Martin Kepplinger 2021-09-06 1496 int ret = 0;
e8c0882685f915 Martin Kepplinger 2021-09-06 1497 int dummy_lines;
e8c0882685f915 Martin Kepplinger 2021-09-06 1498 u64 link_freq = hi846_get_link_freq(hi846);
e8c0882685f915 Martin Kepplinger 2021-09-06 1499
e8c0882685f915 Martin Kepplinger 2021-09-06 1500 dev_dbg(&client->dev, "%s: link freq: %llu\n", __func__,
e8c0882685f915 Martin Kepplinger 2021-09-06 1501 hi846_get_link_freq(hi846));
e8c0882685f915 Martin Kepplinger 2021-09-06 1502
e8c0882685f915 Martin Kepplinger 2021-09-06 1503 do_div(link_freq, fps);
e8c0882685f915 Martin Kepplinger 2021-09-06 1504 frame_length = link_freq;
e8c0882685f915 Martin Kepplinger 2021-09-06 1505 do_div(frame_length, HI846_LINE_LENGTH);
e8c0882685f915 Martin Kepplinger 2021-09-06 1506
e8c0882685f915 Martin Kepplinger 2021-09-06 1507 dummy_lines = (frame_length > hi846->cur_mode->frame_len) ?
e8c0882685f915 Martin Kepplinger 2021-09-06 1508 (frame_length - hi846->cur_mode->frame_len) : 0;
e8c0882685f915 Martin Kepplinger 2021-09-06 1509
e8c0882685f915 Martin Kepplinger 2021-09-06 1510 frame_length = hi846->cur_mode->frame_len + dummy_lines;
e8c0882685f915 Martin Kepplinger 2021-09-06 1511
e8c0882685f915 Martin Kepplinger 2021-09-06 1512 dev_dbg(&client->dev, "%s: frame length calculated: %llu\n", __func__,
e8c0882685f915 Martin Kepplinger 2021-09-06 1513 frame_length);
e8c0882685f915 Martin Kepplinger 2021-09-06 1514
e8c0882685f915 Martin Kepplinger 2021-09-06 1515 hi846_write_reg_16(hi846, HI846_REG_FLL, frame_length & 0xFFFF, &ret);
e8c0882685f915 Martin Kepplinger 2021-09-06 1516 hi846_write_reg_16(hi846, HI846_REG_LLP,
e8c0882685f915 Martin Kepplinger 2021-09-06 1517 HI846_LINE_LENGTH & 0xFFFF, &ret);
e8c0882685f915 Martin Kepplinger 2021-09-06 1518
e8c0882685f915 Martin Kepplinger 2021-09-06 1519 return ret;
e8c0882685f915 Martin Kepplinger 2021-09-06 1520 }
e8c0882685f915 Martin Kepplinger 2021-09-06 1521
---
0-DAY CI Kernel Test Service
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 4+ messages in thread* drivers/media/i2c/hi846.c:1494:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
@ 2022-03-16 14:14 kernel test robot
0 siblings, 0 replies; 4+ messages in thread
From: kernel test robot @ 2022-03-16 14:14 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 19059 bytes --]
CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: linux-kernel(a)vger.kernel.org
TO: Martin Kepplinger <martin.kepplinger@puri.sm>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: linux-media(a)vger.kernel.org
CC: Pavel Machek <pavel@ucw.cz>
CC: Sakari Ailus <sakari.ailus@linux.intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 56e337f2cf1326323844927a04e9dbce9a244835
commit: e8c0882685f9152f0d729664a12bcbe749cb7736 media: i2c: add driver for the SK Hynix Hi-846 8M pixel camera
date: 5 months ago
:::::: branch date: 21 hours ago
:::::: commit date: 5 months ago
config: riscv-randconfig-c006-20220307 (https://download.01.org/0day-ci/archive/20220316/202203162216.Ysr2MNY0-lkp(a)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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8c0882685f9152f0d729664a12bcbe749cb7736
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout e8c0882685f9152f0d729664a12bcbe749cb7736
# 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 >>)
^ ~
fs/xfs/xfs_icache.c:746:2: note: Value stored to 'error' is never read
error = 0;
^ ~
fs/xfs/xfs_icache.c:1667:2: warning: Value stored to 'nr_found' is never read [clang-analyzer-deadcode.DeadStores]
nr_found = 0;
^ ~
fs/xfs/xfs_icache.c:1667:2: note: Value stored to 'nr_found' is never read
nr_found = 0;
^ ~
Suppressed 10 warnings (9 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.
9 warnings generated.
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.
9 warnings generated.
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.
9 warnings generated.
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.
9 warnings generated.
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.
9 warnings generated.
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.
12 warnings generated.
Suppressed 12 warnings (9 in non-user code, 3 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.
9 warnings generated.
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.
9 warnings generated.
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.
9 warnings generated.
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.
9 warnings generated.
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.
10 warnings generated.
Suppressed 10 warnings (10 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.
17 warnings generated.
drivers/media/pci/saa7164/saa7164-encoder.c:597:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = saa7164_encoder_pause_port(port);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/pci/saa7164/saa7164-encoder.c:597:2: note: Value stored to 'ret' is never read
ret = saa7164_encoder_pause_port(port);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/pci/saa7164/saa7164-encoder.c:598:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = saa7164_encoder_acquire_port(port);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/pci/saa7164/saa7164-encoder.c:598:2: note: Value stored to 'ret' is never read
ret = saa7164_encoder_acquire_port(port);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 15 warnings (15 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.
18 warnings generated.
drivers/media/pci/saa7164/saa7164-vbi.c:281:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = saa7164_vbi_pause_port(port);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/pci/saa7164/saa7164-vbi.c:281:2: note: Value stored to 'ret' is never read
ret = saa7164_vbi_pause_port(port);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/pci/saa7164/saa7164-vbi.c:282:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = saa7164_vbi_acquire_port(port);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/pci/saa7164/saa7164-vbi.c:282:2: note: Value stored to 'ret' is never read
ret = saa7164_vbi_acquire_port(port);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/pci/saa7164/saa7164-vbi.c:381:3: warning: Value stored to 'result' is never read [clang-analyzer-deadcode.DeadStores]
result = saa7164_vbi_acquire_port(port);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/pci/saa7164/saa7164-vbi.c:381:3: note: Value stored to 'result' is never read
result = saa7164_vbi_acquire_port(port);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 15 warnings (15 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.
9 warnings generated.
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.
7 warnings generated.
drivers/media/i2c/ccs-pll.c:93:15: warning: Value stored to 's' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
const char *s = pll_string(br->which);
^ ~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/ccs-pll.c:93:15: note: Value stored to 's' during its initialization is never read
const char *s = pll_string(br->which);
^ ~~~~~~~~~~~~~~~~~~~~~
Suppressed 6 warnings (6 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.
9 warnings generated.
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.
12 warnings generated.
>> drivers/media/i2c/hi846.c:1494:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1494:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/media/i2c/hi846.c:1764:2: warning: Value stored to 'tgt_fps' is never read [clang-analyzer-deadcode.DeadStores]
tgt_fps = hi846->cur_mode->fps;
^ ~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1764:2: note: Value stored to 'tgt_fps' is never read
tgt_fps = hi846->cur_mode->fps;
^ ~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1805:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = v4l2_get_subdevdata(sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1805:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = v4l2_get_subdevdata(sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~
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.
9 warnings generated.
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.
10 warnings generated.
drivers/media/i2c/imx258.c:781:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/imx258.c:781:3: note: Value stored to 'ret' is never read
ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
6 warnings generated.
fs/udf/balloc.c:543:13: warning: The result of the left shift is undefined because the left operand is negative [clang-analyzer-core.UndefinedBinaryOperatorResult]
(etype << 30) | elen, 1);
^
fs/udf/balloc.c:680:6: note: Assuming the condition is false
if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/udf/balloc.c:680:2: note: Taking false branch
if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
^
fs/udf/balloc.c:685:11: note: Assuming the condition is true
else if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/udf/balloc.c:685:7: note: Taking true branch
else if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
^
fs/udf/balloc.c:686:15: note: Calling 'udf_table_prealloc_blocks'
allocated = udf_table_prealloc_blocks(sb,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/udf/balloc.c:510:6: note: Assuming 'first_block' is < field 's_partition_len'
if (first_block >= sbi->s_partmaps[partition].s_partition_len)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/udf/balloc.c:510:2: note: Taking false branch
if (first_block >= sbi->s_partmaps[partition].s_partition_len)
^
fs/udf/balloc.c:514:6: note: Assuming field 'i_alloc_type' is equal to ICBTAG_FLAG_AD_SHORT
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/udf/balloc.c:514:2: note: Taking true branch
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
^
fs/udf/balloc.c:527:9: note: 'first_block' is not equal to field 'logicalBlockNum'
while (first_block != eloc.logicalBlockNum &&
^~~~~~~~~~~
fs/udf/balloc.c:527:9: note: Left side of '&&' is true
fs/udf/balloc.c:528:10: note: Value assigned to 'etype'
(etype = udf_next_aext(table, &epos, &eloc, &elen, 1)) != -1) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/udf/balloc.c:528:9: note: Assuming the condition is false
(etype = udf_next_aext(table, &epos, &eloc, &elen, 1)) != -1) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/udf/balloc.c:527:2: note: Loop condition is false. Execution continues on line 534
while (first_block != eloc.logicalBlockNum &&
^
fs/udf/balloc.c:534:6: note: Assuming 'first_block' is equal to field 'logicalBlockNum'
if (first_block == eloc.logicalBlockNum) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/udf/balloc.c:534:2: note: Taking true branch
if (first_block == eloc.logicalBlockNum) {
^
fs/udf/balloc.c:538:7: note: Assuming 'alloc_count' is > 'block_count'
if (alloc_count > block_count) {
^~~~~~~~~~~~~~~~~~~~~~~~~
fs/udf/balloc.c:538:3: note: Taking true branch
if (alloc_count > block_count) {
^
fs/udf/balloc.c:543:13: note: The result of the left shift is undefined because the left operand is negative
(etype << 30) | elen, 1);
~~~~~ ^
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.
9 warnings generated.
drivers/misc/habanalabs/gaudi/gaudi_coresight.c:770:31: warning: Value stored to 'input' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct hl_debug_params_spmu *input = params->input;
^~~~~ ~~~~~~~~~~~~~
drivers/misc/habanalabs/gaudi/gaudi_coresight.c:770:31: note: Value stored to 'input' during its initialization is never read
struct hl_debug_params_spmu *input = params->input;
^~~~~ ~~~~~~~~~~~~~
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.
9 warnings generated.
drivers/misc/habanalabs/common/debugfs.c:858:3: warning: Value stored to 'rc' is never read [clang-analyzer-deadcode.DeadStores]
rc = pci_enable_device(hdev->pdev);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/debugfs.c:858:3: note: Value stored to 'rc' is never read
vim +/client +1494 drivers/media/i2c/hi846.c
e8c0882685f9152 Martin Kepplinger 2021-09-06 1491
e8c0882685f9152 Martin Kepplinger 2021-09-06 1492 static int hi846_set_video_mode(struct hi846 *hi846, int fps)
e8c0882685f9152 Martin Kepplinger 2021-09-06 1493 {
e8c0882685f9152 Martin Kepplinger 2021-09-06 @1494 struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
e8c0882685f9152 Martin Kepplinger 2021-09-06 1495 u64 frame_length;
e8c0882685f9152 Martin Kepplinger 2021-09-06 1496 int ret = 0;
e8c0882685f9152 Martin Kepplinger 2021-09-06 1497 int dummy_lines;
e8c0882685f9152 Martin Kepplinger 2021-09-06 1498 u64 link_freq = hi846_get_link_freq(hi846);
e8c0882685f9152 Martin Kepplinger 2021-09-06 1499
e8c0882685f9152 Martin Kepplinger 2021-09-06 1500 dev_dbg(&client->dev, "%s: link freq: %llu\n", __func__,
e8c0882685f9152 Martin Kepplinger 2021-09-06 1501 hi846_get_link_freq(hi846));
e8c0882685f9152 Martin Kepplinger 2021-09-06 1502
e8c0882685f9152 Martin Kepplinger 2021-09-06 1503 do_div(link_freq, fps);
e8c0882685f9152 Martin Kepplinger 2021-09-06 1504 frame_length = link_freq;
e8c0882685f9152 Martin Kepplinger 2021-09-06 1505 do_div(frame_length, HI846_LINE_LENGTH);
e8c0882685f9152 Martin Kepplinger 2021-09-06 1506
e8c0882685f9152 Martin Kepplinger 2021-09-06 1507 dummy_lines = (frame_length > hi846->cur_mode->frame_len) ?
e8c0882685f9152 Martin Kepplinger 2021-09-06 1508 (frame_length - hi846->cur_mode->frame_len) : 0;
e8c0882685f9152 Martin Kepplinger 2021-09-06 1509
e8c0882685f9152 Martin Kepplinger 2021-09-06 1510 frame_length = hi846->cur_mode->frame_len + dummy_lines;
e8c0882685f9152 Martin Kepplinger 2021-09-06 1511
e8c0882685f9152 Martin Kepplinger 2021-09-06 1512 dev_dbg(&client->dev, "%s: frame length calculated: %llu\n", __func__,
e8c0882685f9152 Martin Kepplinger 2021-09-06 1513 frame_length);
e8c0882685f9152 Martin Kepplinger 2021-09-06 1514
e8c0882685f9152 Martin Kepplinger 2021-09-06 1515 hi846_write_reg_16(hi846, HI846_REG_FLL, frame_length & 0xFFFF, &ret);
e8c0882685f9152 Martin Kepplinger 2021-09-06 1516 hi846_write_reg_16(hi846, HI846_REG_LLP,
e8c0882685f9152 Martin Kepplinger 2021-09-06 1517 HI846_LINE_LENGTH & 0xFFFF, &ret);
e8c0882685f9152 Martin Kepplinger 2021-09-06 1518
e8c0882685f9152 Martin Kepplinger 2021-09-06 1519 return ret;
e8c0882685f9152 Martin Kepplinger 2021-09-06 1520 }
e8c0882685f9152 Martin Kepplinger 2021-09-06 1521
---
0-DAY CI Kernel Test Service
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 4+ messages in thread* drivers/media/i2c/hi846.c:1494:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
@ 2022-03-12 23:58 kernel test robot
0 siblings, 0 replies; 4+ messages in thread
From: kernel test robot @ 2022-03-12 23:58 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 20368 bytes --]
CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: linux-kernel(a)vger.kernel.org
TO: Martin Kepplinger <martin.kepplinger@puri.sm>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: linux-media(a)vger.kernel.org
CC: Pavel Machek <pavel@ucw.cz>
CC: Sakari Ailus <sakari.ailus@linux.intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: aad611a868d16cdc16a7d4a764cef955293e47e3
commit: e8c0882685f9152f0d729664a12bcbe749cb7736 media: i2c: add driver for the SK Hynix Hi-846 8M pixel camera
date: 5 months ago
:::::: branch date: 5 hours ago
:::::: commit date: 5 months ago
config: riscv-randconfig-c006-20220307 (https://download.01.org/0day-ci/archive/20220313/202203130710.uJ9Eu1Md-lkp(a)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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8c0882685f9152f0d729664a12bcbe749cb7736
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout e8c0882685f9152f0d729664a12bcbe749cb7736
# 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/misc/habanalabs/gaudi/gaudi_coresight.c:770:31: note: Value stored to 'input' during its initialization is never read
struct hl_debug_params_spmu *input = params->input;
^~~~~ ~~~~~~~~~~~~~
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.
9 warnings generated.
drivers/misc/habanalabs/common/debugfs.c:858:3: warning: Value stored to 'rc' is never read [clang-analyzer-deadcode.DeadStores]
rc = pci_enable_device(hdev->pdev);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/debugfs.c:858:3: note: Value stored to 'rc' is never read
rc = pci_enable_device(hdev->pdev);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
6 warnings generated.
Suppressed 6 warnings (6 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).
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.
9 warnings generated.
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.
drivers/accessibility/speakup/varhandlers.c:263:4: warning: Call to function 'strcpy' 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 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy((char *)var->p_val, var_data->u.s.default_val);
^~~~~~
drivers/accessibility/speakup/varhandlers.c:263:4: note: Call to function 'strcpy' 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 'strlcpy'. CWE-119
strcpy((char *)var->p_val, var_data->u.s.default_val);
^~~~~~
drivers/accessibility/speakup/varhandlers.c:266:3: warning: Call to function 'strcpy' 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 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy((char *)var->p_val, page);
^~~~~~
drivers/accessibility/speakup/varhandlers.c:266:3: note: Call to function 'strcpy' 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 'strlcpy'. CWE-119
strcpy((char *)var->p_val, page);
^~~~~~
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
14 warnings generated.
Suppressed 14 warnings (14 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.
Suppressed 6 warnings (6 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.
9 warnings generated.
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.
9 warnings generated.
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.
6 warnings generated.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
9 warnings generated.
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.
7 warnings generated.
drivers/media/i2c/ccs-pll.c:93:15: warning: Value stored to 's' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
const char *s = pll_string(br->which);
^ ~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/ccs-pll.c:93:15: note: Value stored to 's' during its initialization is never read
const char *s = pll_string(br->which);
^ ~~~~~~~~~~~~~~~~~~~~~
Suppressed 6 warnings (6 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.
9 warnings generated.
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.
12 warnings generated.
>> drivers/media/i2c/hi846.c:1494:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1494:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/media/i2c/hi846.c:1764:2: warning: Value stored to 'tgt_fps' is never read [clang-analyzer-deadcode.DeadStores]
tgt_fps = hi846->cur_mode->fps;
^ ~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1764:2: note: Value stored to 'tgt_fps' is never read
tgt_fps = hi846->cur_mode->fps;
^ ~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1805:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = v4l2_get_subdevdata(sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1805:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = v4l2_get_subdevdata(sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~
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.
9 warnings generated.
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.
10 warnings generated.
drivers/media/i2c/imx258.c:781:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/imx258.c:781:3: note: Value stored to 'ret' is never read
ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
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.
6 warnings generated.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
9 warnings generated.
drivers/hwmon/lm63.c:1017:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct device *dev = &client->dev;
^~~ ~~~~~~~~~~~~
drivers/hwmon/lm63.c:1017:17: note: Value stored to 'dev' during its initialization is never read
struct device *dev = &client->dev;
^~~ ~~~~~~~~~~~~
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.
7 warnings generated.
drivers/leds/uleds.c:150:4: warning: Value stored to 'retval' is never read [clang-analyzer-deadcode.DeadStores]
retval = copy_to_user(buffer, &udev->brightness,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/leds/uleds.c:150:4: note: Value stored to 'retval' is never read
retval = copy_to_user(buffer, &udev->brightness,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 6 warnings (6 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/firmware/broadcom/tee_bnxt_fw.c:146:3: warning: Value stored to 'nbytes' is never read [clang-analyzer-deadcode.DeadStores]
nbytes = rbytes;
^ ~~~~~~
drivers/firmware/broadcom/tee_bnxt_fw.c:146:3: note: Value stored to 'nbytes' is never read
nbytes = rbytes;
^ ~~~~~~
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
Suppressed 6 warnings (6 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.
9 warnings generated.
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.
6 warnings generated.
Suppressed 6 warnings (6 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.
Suppressed 7 warnings (7 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.
9 warnings generated.
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.
6 warnings generated.
Suppressed 6 warnings (6 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.
vim +/client +1494 drivers/media/i2c/hi846.c
e8c0882685f915 Martin Kepplinger 2021-09-06 1491
e8c0882685f915 Martin Kepplinger 2021-09-06 1492 static int hi846_set_video_mode(struct hi846 *hi846, int fps)
e8c0882685f915 Martin Kepplinger 2021-09-06 1493 {
e8c0882685f915 Martin Kepplinger 2021-09-06 @1494 struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
e8c0882685f915 Martin Kepplinger 2021-09-06 1495 u64 frame_length;
e8c0882685f915 Martin Kepplinger 2021-09-06 1496 int ret = 0;
e8c0882685f915 Martin Kepplinger 2021-09-06 1497 int dummy_lines;
e8c0882685f915 Martin Kepplinger 2021-09-06 1498 u64 link_freq = hi846_get_link_freq(hi846);
e8c0882685f915 Martin Kepplinger 2021-09-06 1499
e8c0882685f915 Martin Kepplinger 2021-09-06 1500 dev_dbg(&client->dev, "%s: link freq: %llu\n", __func__,
e8c0882685f915 Martin Kepplinger 2021-09-06 1501 hi846_get_link_freq(hi846));
e8c0882685f915 Martin Kepplinger 2021-09-06 1502
e8c0882685f915 Martin Kepplinger 2021-09-06 1503 do_div(link_freq, fps);
e8c0882685f915 Martin Kepplinger 2021-09-06 1504 frame_length = link_freq;
e8c0882685f915 Martin Kepplinger 2021-09-06 1505 do_div(frame_length, HI846_LINE_LENGTH);
e8c0882685f915 Martin Kepplinger 2021-09-06 1506
e8c0882685f915 Martin Kepplinger 2021-09-06 1507 dummy_lines = (frame_length > hi846->cur_mode->frame_len) ?
e8c0882685f915 Martin Kepplinger 2021-09-06 1508 (frame_length - hi846->cur_mode->frame_len) : 0;
e8c0882685f915 Martin Kepplinger 2021-09-06 1509
e8c0882685f915 Martin Kepplinger 2021-09-06 1510 frame_length = hi846->cur_mode->frame_len + dummy_lines;
e8c0882685f915 Martin Kepplinger 2021-09-06 1511
e8c0882685f915 Martin Kepplinger 2021-09-06 1512 dev_dbg(&client->dev, "%s: frame length calculated: %llu\n", __func__,
e8c0882685f915 Martin Kepplinger 2021-09-06 1513 frame_length);
e8c0882685f915 Martin Kepplinger 2021-09-06 1514
e8c0882685f915 Martin Kepplinger 2021-09-06 1515 hi846_write_reg_16(hi846, HI846_REG_FLL, frame_length & 0xFFFF, &ret);
e8c0882685f915 Martin Kepplinger 2021-09-06 1516 hi846_write_reg_16(hi846, HI846_REG_LLP,
e8c0882685f915 Martin Kepplinger 2021-09-06 1517 HI846_LINE_LENGTH & 0xFFFF, &ret);
e8c0882685f915 Martin Kepplinger 2021-09-06 1518
e8c0882685f915 Martin Kepplinger 2021-09-06 1519 return ret;
e8c0882685f915 Martin Kepplinger 2021-09-06 1520 }
e8c0882685f915 Martin Kepplinger 2021-09-06 1521
---
0-DAY CI Kernel Test Service
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 4+ messages in thread* drivers/media/i2c/hi846.c:1494:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
@ 2022-02-27 4:25 kernel test robot
0 siblings, 0 replies; 4+ messages in thread
From: kernel test robot @ 2022-02-27 4:25 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 18769 bytes --]
CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: linux-kernel(a)vger.kernel.org
TO: Martin Kepplinger <martin.kepplinger@puri.sm>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: linux-media(a)vger.kernel.org
CC: Pavel Machek <pavel@ucw.cz>
CC: Sakari Ailus <sakari.ailus@linux.intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 2293be58d6a18cab800e25e42081bacb75c05752
commit: e8c0882685f9152f0d729664a12bcbe749cb7736 media: i2c: add driver for the SK Hynix Hi-846 8M pixel camera
date: 5 months ago
:::::: branch date: 8 hours ago
:::::: commit date: 5 months ago
config: riscv-randconfig-c006-20220222 (https://download.01.org/0day-ci/archive/20220227/202202271220.9j3Zc95k-lkp(a)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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8c0882685f9152f0d729664a12bcbe749cb7736
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout e8c0882685f9152f0d729664a12bcbe749cb7736
# 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/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^
include/linux/compiler_types.h:322:2: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
include/linux/compiler_types.h:310:2: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^
include/linux/compiler_types.h:302:3: note: expanded from macro '__compiletime_assert'
if (!(condition)) \
^
drivers/scsi/mpi3mr/mpi3mr_os.c:1393:16: note: Loop condition is false. Exiting loop
_rmhs_node = list_entry(mrioc->delayed_rmhs_list.next,
^
include/linux/list.h:511:2: note: expanded from macro 'list_entry'
container_of(ptr, type, member)
^
include/linux/kernel.h:495:2: note: expanded from macro 'container_of'
BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
^
include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^
include/linux/compiler_types.h:322:2: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
include/linux/compiler_types.h:310:2: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^
include/linux/compiler_types.h:300:2: note: expanded from macro '__compiletime_assert'
do { \
^
drivers/scsi/mpi3mr/mpi3mr_os.c:1396:3: note: Memory is released
kfree(_rmhs_node);
^~~~~~~~~~~~~~~~~
drivers/scsi/mpi3mr/mpi3mr_os.c:1392:2: note: Loop condition is true. Entering loop body
while (!list_empty(&mrioc->delayed_rmhs_list)) {
^
drivers/scsi/mpi3mr/mpi3mr_os.c:1393:16: note: Left side of '&&' is false
_rmhs_node = list_entry(mrioc->delayed_rmhs_list.next,
^
include/linux/list.h:511:2: note: expanded from macro 'list_entry'
container_of(ptr, type, member)
^
include/linux/kernel.h:495:61: note: expanded from macro 'container_of'
BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
^
drivers/scsi/mpi3mr/mpi3mr_os.c:1393:16: note: Taking false branch
_rmhs_node = list_entry(mrioc->delayed_rmhs_list.next,
^
include/linux/list.h:511:2: note: expanded from macro 'list_entry'
container_of(ptr, type, member)
^
include/linux/kernel.h:495:2: note: expanded from macro 'container_of'
BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
^
include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^
include/linux/compiler_types.h:322:2: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
include/linux/compiler_types.h:310:2: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^
include/linux/compiler_types.h:302:3: note: expanded from macro '__compiletime_assert'
if (!(condition)) \
^
drivers/scsi/mpi3mr/mpi3mr_os.c:1393:16: note: Loop condition is false. Exiting loop
_rmhs_node = list_entry(mrioc->delayed_rmhs_list.next,
^
include/linux/list.h:511:2: note: expanded from macro 'list_entry'
container_of(ptr, type, member)
^
include/linux/kernel.h:495:2: note: expanded from macro 'container_of'
BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
^
include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^
include/linux/compiler_types.h:322:2: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
include/linux/compiler_types.h:310:2: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^
include/linux/compiler_types.h:300:2: note: expanded from macro '__compiletime_assert'
do { \
^
drivers/scsi/mpi3mr/mpi3mr_os.c:1395:3: note: Calling 'list_del'
list_del(&_rmhs_node->list);
^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/list.h:147:14: note: Use of memory after it is freed
entry->next = LIST_POISON1;
~~~~~~~~~~~ ^
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.
12 warnings generated.
>> drivers/media/i2c/hi846.c:1494:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1494:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/media/i2c/hi846.c:1764:2: warning: Value stored to 'tgt_fps' is never read [clang-analyzer-deadcode.DeadStores]
tgt_fps = hi846->cur_mode->fps;
^ ~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1764:2: note: Value stored to 'tgt_fps' is never read
tgt_fps = hi846->cur_mode->fps;
^ ~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1805:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = v4l2_get_subdevdata(sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/hi846.c:1805:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = v4l2_get_subdevdata(sd);
^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~
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.
10 warnings generated.
drivers/media/i2c/imx258.c:781:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/imx258.c:781:3: note: Value stored to 'ret' is never read
ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
11 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 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.
10 warnings generated.
Suppressed 10 warnings (9 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.
9 warnings generated.
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.
18 warnings generated.
drivers/media/tuners/fc2580.c:30:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:30:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:277:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:277:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:298:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:298:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:391:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:391:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:406:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:406:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:415:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:415:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:426:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:426:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:440:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:440:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:470:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
drivers/media/tuners/fc2580.c:470:21: note: Value stored to 'client' during its initialization is never read
struct i2c_client *client = dev->client;
^~~~~~ ~~~~~~~~~~~
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.
vim +/client +1494 drivers/media/i2c/hi846.c
e8c0882685f915 Martin Kepplinger 2021-09-06 1491
e8c0882685f915 Martin Kepplinger 2021-09-06 1492 static int hi846_set_video_mode(struct hi846 *hi846, int fps)
e8c0882685f915 Martin Kepplinger 2021-09-06 1493 {
e8c0882685f915 Martin Kepplinger 2021-09-06 @1494 struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
e8c0882685f915 Martin Kepplinger 2021-09-06 1495 u64 frame_length;
e8c0882685f915 Martin Kepplinger 2021-09-06 1496 int ret = 0;
e8c0882685f915 Martin Kepplinger 2021-09-06 1497 int dummy_lines;
e8c0882685f915 Martin Kepplinger 2021-09-06 1498 u64 link_freq = hi846_get_link_freq(hi846);
e8c0882685f915 Martin Kepplinger 2021-09-06 1499
e8c0882685f915 Martin Kepplinger 2021-09-06 1500 dev_dbg(&client->dev, "%s: link freq: %llu\n", __func__,
e8c0882685f915 Martin Kepplinger 2021-09-06 1501 hi846_get_link_freq(hi846));
e8c0882685f915 Martin Kepplinger 2021-09-06 1502
e8c0882685f915 Martin Kepplinger 2021-09-06 1503 do_div(link_freq, fps);
e8c0882685f915 Martin Kepplinger 2021-09-06 1504 frame_length = link_freq;
e8c0882685f915 Martin Kepplinger 2021-09-06 1505 do_div(frame_length, HI846_LINE_LENGTH);
e8c0882685f915 Martin Kepplinger 2021-09-06 1506
e8c0882685f915 Martin Kepplinger 2021-09-06 1507 dummy_lines = (frame_length > hi846->cur_mode->frame_len) ?
e8c0882685f915 Martin Kepplinger 2021-09-06 1508 (frame_length - hi846->cur_mode->frame_len) : 0;
e8c0882685f915 Martin Kepplinger 2021-09-06 1509
e8c0882685f915 Martin Kepplinger 2021-09-06 1510 frame_length = hi846->cur_mode->frame_len + dummy_lines;
e8c0882685f915 Martin Kepplinger 2021-09-06 1511
e8c0882685f915 Martin Kepplinger 2021-09-06 1512 dev_dbg(&client->dev, "%s: frame length calculated: %llu\n", __func__,
e8c0882685f915 Martin Kepplinger 2021-09-06 1513 frame_length);
e8c0882685f915 Martin Kepplinger 2021-09-06 1514
e8c0882685f915 Martin Kepplinger 2021-09-06 1515 hi846_write_reg_16(hi846, HI846_REG_FLL, frame_length & 0xFFFF, &ret);
e8c0882685f915 Martin Kepplinger 2021-09-06 1516 hi846_write_reg_16(hi846, HI846_REG_LLP,
e8c0882685f915 Martin Kepplinger 2021-09-06 1517 HI846_LINE_LENGTH & 0xFFFF, &ret);
e8c0882685f915 Martin Kepplinger 2021-09-06 1518
e8c0882685f915 Martin Kepplinger 2021-09-06 1519 return ret;
e8c0882685f915 Martin Kepplinger 2021-09-06 1520 }
e8c0882685f915 Martin Kepplinger 2021-09-06 1521
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-03-18 18:16 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2022-03-18 18:16 drivers/media/i2c/hi846.c:1494:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores] kernel test robot
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2022-03-16 14:14 kernel test robot
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