* drivers/pci/controller/dwc/pcie-kirin.c:321:2: warning: Value stored to 'pdev' is never read [clang-analyzer-deadcode.DeadStores]
@ 2021-12-12 19:05 kernel test robot
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From: kernel test robot @ 2021-12-12 19:05 UTC (permalink / raw)
To: kbuild
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CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: linux-media(a)vger.kernel.org
CC: Bjorn Helgaas <helgaas@kernel.org>
CC: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: a763d5a5abd65797aec3dd1bf01fe2ccbec32967
commit: 61d37547436dce45e3590db72360df0e230ca969 PCI: kirin: Reorganize the PHY logic inside the driver
date: 6 weeks ago
:::::: branch date: 19 hours ago
:::::: commit date: 6 weeks ago
config: riscv-randconfig-c006-20211130 (https://download.01.org/0day-ci/archive/20211213/202112130331.sD2AP5Nn-lkp(a)intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 25eb7fa01d7ebbe67648ea03841cda55b4239ab2)
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=61d37547436dce45e3590db72360df0e230ca969
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 61d37547436dce45e3590db72360df0e230ca969
# 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/libxfs/xfs_refcount.c:112:19: note: Value stored to 'agno' during its initialization is never read
xfs_agnumber_t agno = cur->bc_ag.pag->pag_agno;
^~~~ ~~~~~~~~~~~~~~~~~~~~~~~~
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.
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.
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.
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.
6 warnings generated.
drivers/pci/controller/dwc/pci-keystone.c:260:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct device *dev = pci->dev;
^~~ ~~~~~~~~
drivers/pci/controller/dwc/pci-keystone.c:260:17: note: Value stored to 'dev' during its initialization is never read
struct device *dev = pci->dev;
^~~ ~~~~~~~~
drivers/pci/controller/dwc/pci-keystone.c:578:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct device *dev = pci->dev;
^~~ ~~~~~~~~
drivers/pci/controller/dwc/pci-keystone.c:578:17: note: Value stored to 'dev' during its initialization is never read
struct device *dev = pci->dev;
^~~ ~~~~~~~~
drivers/pci/controller/dwc/pci-keystone.c:620:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct device *dev = pci->dev;
^~~ ~~~~~~~~
drivers/pci/controller/dwc/pci-keystone.c:620:17: note: Value stored to 'dev' during its initialization is never read
struct device *dev = pci->dev;
^~~ ~~~~~~~~
drivers/pci/controller/dwc/pci-keystone.c:1114:2: warning: Value stored to 'ep_ops' is never read [clang-analyzer-deadcode.DeadStores]
ep_ops = data->ep_ops;
^ ~~~~~~~~~~~~
drivers/pci/controller/dwc/pci-keystone.c:1114:2: note: Value stored to 'ep_ops' is never read
ep_ops = data->ep_ops;
^ ~~~~~~~~~~~~
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.
3 warnings generated.
drivers/pci/controller/dwc/pcie-artpec6.c:243:18: warning: Value stored to 'pci' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct dw_pcie *pci = artpec6_pcie->pci;
^~~ ~~~~~~~~~~~~~~~~~
drivers/pci/controller/dwc/pcie-artpec6.c:243:18: note: Value stored to 'pci' during its initialization is never read
struct dw_pcie *pci = artpec6_pcie->pci;
^~~ ~~~~~~~~~~~~~~~~~
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.
3 warnings generated.
>> drivers/pci/controller/dwc/pcie-kirin.c:321:2: warning: Value stored to 'pdev' is never read [clang-analyzer-deadcode.DeadStores]
pdev = container_of(dev, struct platform_device, dev);
^
drivers/pci/controller/dwc/pcie-kirin.c:321:2: note: Value stored to 'pdev' is never read
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.
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.
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.
3 warnings generated.
fs/xfs/scrub/dabtree.c:90:47: warning: Access to field 'b_addr' results in a dereference of a null pointer (loaded from field 'bp') [clang-analyzer-core.NullDereference]
xfs_da3_node_hdr_from_disk(ds->sc->mp, &hdr, blk->bp->b_addr);
^
fs/xfs/scrub/dabtree.c:485:29: note: Assuming 'whichfork' is not equal to 0
if (!xfs_ifork_has_extents(XFS_IFORK_PTR(sc->ip, whichfork)))
^
fs/xfs/libxfs/xfs_inode_fork.h:98:3: note: expanded from macro 'XFS_IFORK_PTR'
((w) == XFS_DATA_FORK ? \
^~~~~~~~~~~~~~~~~~~~
fs/xfs/scrub/dabtree.c:485:29: note: '?' condition is false
if (!xfs_ifork_has_extents(XFS_IFORK_PTR(sc->ip, whichfork)))
^
fs/xfs/libxfs/xfs_inode_fork.h:98:3: note: expanded from macro 'XFS_IFORK_PTR'
((w) == XFS_DATA_FORK ? \
^
fs/xfs/scrub/dabtree.c:485:29: note: Assuming 'whichfork' is not equal to 1
if (!xfs_ifork_has_extents(XFS_IFORK_PTR(sc->ip, whichfork)))
^
fs/xfs/libxfs/xfs_inode_fork.h:100:4: note: expanded from macro 'XFS_IFORK_PTR'
((w) == XFS_ATTR_FORK ? \
^~~~~~~~~~~~~~~~~~~~
fs/xfs/scrub/dabtree.c:485:29: note: '?' condition is false
if (!xfs_ifork_has_extents(XFS_IFORK_PTR(sc->ip, whichfork)))
^
fs/xfs/libxfs/xfs_inode_fork.h:100:4: note: expanded from macro 'XFS_IFORK_PTR'
((w) == XFS_ATTR_FORK ? \
^
fs/xfs/scrub/dabtree.c:485:2: note: Taking false branch
if (!xfs_ifork_has_extents(XFS_IFORK_PTR(sc->ip, whichfork)))
^
fs/xfs/scrub/dabtree.c:496:6: note: 'whichfork' is not equal to XFS_ATTR_FORK
if (whichfork == XFS_ATTR_FORK) {
^~~~~~~~~
fs/xfs/scrub/dabtree.c:496:2: note: Taking false branch
if (whichfork == XFS_ATTR_FORK) {
^
fs/xfs/scrub/dabtree.c:511:6: note: 'error' is 0
if (error)
^~~~~
fs/xfs/scrub/dabtree.c:511:2: note: Taking false branch
if (error)
^
fs/xfs/scrub/dabtree.c:518:6: note: Assuming field 'bp' is not equal to NULL
if (blks[level].bp == NULL)
^~~~~~~~~~~~~~~~~~~~~~
fs/xfs/scrub/dabtree.c:518:2: note: Taking false branch
if (blks[level].bp == NULL)
^
fs/xfs/scrub/dabtree.c:522:9: note: 'level' is >= 0
while (level >= 0 && level < XFS_DA_NODE_MAXDEPTH) {
^~~~~
fs/xfs/scrub/dabtree.c:522:9: note: Left side of '&&' is true
fs/xfs/scrub/dabtree.c:522:2: note: Loop condition is true. Entering loop body
while (level >= 0 && level < XFS_DA_NODE_MAXDEPTH) {
^
fs/xfs/scrub/dabtree.c:524:7: note: Assuming field 'magic' is equal to XFS_DA_NODE_MAGIC
if (blks[level].magic != XFS_DA_NODE_MAGIC) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/xfs/scrub/dabtree.c:524:3: note: Taking false branch
if (blks[level].magic != XFS_DA_NODE_MAGIC) {
^
vim +/pdev +321 drivers/pci/controller/dwc/pcie-kirin.c
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 305
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 306 static int hi3660_pcie_phy_init(struct platform_device *pdev,
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 307 struct kirin_pcie *pcie)
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 308 {
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 309 struct device *dev = &pdev->dev;
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 310 struct hi3660_pcie_phy *phy;
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 311 int ret;
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 312
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 313 phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 314 if (!phy)
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 315 return -ENOMEM;
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 316
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 317 pcie->phy_priv = phy;
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 318 phy->dev = dev;
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 319
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 320 /* registers */
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 @321 pdev = container_of(dev, struct platform_device, dev);
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 322
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 323 ret = hi3660_pcie_phy_get_clk(phy);
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 324 if (ret)
fc5165db245ac4 drivers/pci/dwc/pcie-kirin.c Xiaowei Song 2017-06-19 325 return ret;
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 326
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 327 return hi3660_pcie_phy_get_resource(phy);
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 328 }
61d37547436dce drivers/pci/controller/dwc/pcie-kirin.c Mauro Carvalho Chehab 2021-10-21 329
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2021-12-12 19:05 drivers/pci/controller/dwc/pcie-kirin.c:321:2: warning: Value stored to 'pdev' is never read [clang-analyzer-deadcode.DeadStores] kernel test robot
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