From: Bjorn Helgaas <helgaas@kernel.org> To: kernel test robot <lkp@intel.com> Cc: Vidya Sagar <vidyas@nvidia.com>, kbuild-all@lists.01.org, clang-built-linux@googlegroups.com, linux-kernel@vger.kernel.org Subject: Re: drivers/pci/controller/dwc/pcie-tegra194.c:243:27: warning: unused variable 'pcie_gen_freq' Date: Fri, 7 May 2021 12:50:51 -0500 [thread overview] Message-ID: <20210507175051.GA1521138@bjorn-Precision-5520> (raw) In-Reply-To: <202105080046.TTuEQIwi-lkp@intel.com> On Sat, May 08, 2021 at 12:33:52AM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: a48b0872e69428d3d02994dcfad3519f01def7fa > commit: 7f100744749e4fe547dece3bb6557fae5f0a7252 PCI: tegra: Add Tegra194 MCFG quirks for ECAM errata > date: 3 weeks ago > config: arm64-randconfig-r013-20210507 (attached as .config) > compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a3a8a1a15b524d91b5308db68e9d293b34cd88dd) > 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 arm64 cross compiling tool for clang build > # apt-get install binutils-aarch64-linux-gnu > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7f100744749e4fe547dece3bb6557fae5f0a7252 > git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > git fetch --no-tags linus master > git checkout 7f100744749e4fe547dece3bb6557fae5f0a7252 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 Thanks for the report! Just FYI, I followed the instructions above and got this: 12:32:35 ~/linux (kbuild)$ COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 Compiler will be installed in /home/bjorn/0day cd: received redirection to `https://download.01.org/0day-ci/cross-package/' lftpget -c https://download.01.org/0day-ci/cross-package/./clang-latest/clang.tar.xz tar Jxf clang-latest/clang.tar.xz -C /home/bjorn/0day make CONFIG_OF_ALL_DTBS=y CONFIG_DTC=y HOSTCC=/home/bjorn/0day/clang-latest/bin/clang CC=/home/bjorn/0day/clang-latest/bin/clang LD=/home/bjorn/0day/clang-latest/bin/ld.lld HOSTLD=/home/bjorn/0day/clang-latest/bin/ld.lld AR=/home/bjorn/0day/clang-latest/bin/llvm-ar NM=/home/bjorn/0day/clang-latest/bin/llvm-nm STRIP=/home/bjorn/0day/clang-latest/bin/llvm-strip OBJDUMP=/home/bjorn/0day/clang-latest/bin/llvm-objdump OBJSIZE=/home/bjorn/0day/clang-latest/bin/llvm-size READELF=/home/bjorn/0day/clang-latest/bin/llvm-readelf HOSTCXX=/home/bjorn/0day/clang-latest/bin/clang++ HOSTAR=/home/bjorn/0day/clang-latest/bin/llvm-ar CROSS_COMPILE=aarch64-linux-gnu- --jobs=16 W=1 ARCH=arm64 make: /home/bjorn/0day/clang-latest/bin/clang: Command not found SYNC include/config/auto.conf.cmd HOSTCC scripts/basic/fixdep /bin/sh: 1: /home/bjorn/0day/clang-latest/bin/clang: not found make[2]: *** [scripts/Makefile.host:95: scripts/basic/fixdep] Error 127 make[1]: *** [Makefile:533: scripts_basic] Error 2 make: *** [Makefile:709: include/config/auto.conf.cmd] Error 2 make: *** [include/config/auto.conf.cmd] Deleting file 'include/generated/autoconf.h' After adding a symlink "clang-latest -> clang/", it worked as expected and reproduced the warning. But I guess I'll wait for Vidya to fix it. > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@intel.com> > > All warnings (new ones prefixed by >>): > > In file included from drivers/pci/controller/dwc/pcie-tegra194.c:25: > In file included from include/linux/pci-acpi.h:12: > In file included from include/linux/acpi.h:35: > In file included from include/acpi/acpi_io.h:7: > In file included from arch/arm64/include/asm/acpi.h:12: > include/linux/efi.h:1093:34: warning: passing 1-byte aligned argument to 4-byte aligned parameter 2 of 'get_var' may result in an unaligned pointer access [-Walign-mismatch] > status = get_var(L"SecureBoot", &EFI_GLOBAL_VARIABLE_GUID, NULL, &size, > ^ > include/linux/efi.h:1101:24: warning: passing 1-byte aligned argument to 4-byte aligned parameter 2 of 'get_var' may result in an unaligned pointer access [-Walign-mismatch] > get_var(L"SetupMode", &EFI_GLOBAL_VARIABLE_GUID, NULL, &size, &setupmode); > ^ > >> drivers/pci/controller/dwc/pcie-tegra194.c:243:27: warning: unused variable 'pcie_gen_freq' [-Wunused-const-variable] > static const unsigned int pcie_gen_freq[] = { > ^ > drivers/pci/controller/dwc/pcie-tegra194.c:250:18: warning: unused variable 'event_cntr_ctrl_offset' [-Wunused-const-variable] > static const u32 event_cntr_ctrl_offset[] = { > ^ > drivers/pci/controller/dwc/pcie-tegra194.c:259:18: warning: unused variable 'event_cntr_data_offset' [-Wunused-const-variable] > static const u32 event_cntr_data_offset[] = { > ^ > 5 warnings generated. > > > vim +/pcie_gen_freq +243 drivers/pci/controller/dwc/pcie-tegra194.c > > c57247f940e8ea Vidya Sagar 2020-03-03 242 > 56e15a238d9278 Vidya Sagar 2019-08-13 @243 static const unsigned int pcie_gen_freq[] = { > 56e15a238d9278 Vidya Sagar 2019-08-13 244 GEN1_CORE_CLK_FREQ, > 56e15a238d9278 Vidya Sagar 2019-08-13 245 GEN2_CORE_CLK_FREQ, > 56e15a238d9278 Vidya Sagar 2019-08-13 246 GEN3_CORE_CLK_FREQ, > 56e15a238d9278 Vidya Sagar 2019-08-13 247 GEN4_CORE_CLK_FREQ > 56e15a238d9278 Vidya Sagar 2019-08-13 248 }; > 56e15a238d9278 Vidya Sagar 2019-08-13 249 > > :::::: The code at line 243 was first introduced by commit > :::::: 56e15a238d92788a2d09e0c5c26a5de1b3156931 PCI: tegra: Add Tegra194 PCIe support > > :::::: TO: Vidya Sagar <vidyas@nvidia.com> > :::::: CC: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
WARNING: multiple messages have this Message-ID (diff)
From: Bjorn Helgaas <helgaas@kernel.org> To: kbuild-all@lists.01.org Subject: Re: drivers/pci/controller/dwc/pcie-tegra194.c:243:27: warning: unused variable 'pcie_gen_freq' Date: Fri, 07 May 2021 12:50:51 -0500 [thread overview] Message-ID: <20210507175051.GA1521138@bjorn-Precision-5520> (raw) In-Reply-To: <202105080046.TTuEQIwi-lkp@intel.com> [-- Attachment #1: Type: text/plain, Size: 5829 bytes --] On Sat, May 08, 2021 at 12:33:52AM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: a48b0872e69428d3d02994dcfad3519f01def7fa > commit: 7f100744749e4fe547dece3bb6557fae5f0a7252 PCI: tegra: Add Tegra194 MCFG quirks for ECAM errata > date: 3 weeks ago > config: arm64-randconfig-r013-20210507 (attached as .config) > compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a3a8a1a15b524d91b5308db68e9d293b34cd88dd) > 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 arm64 cross compiling tool for clang build > # apt-get install binutils-aarch64-linux-gnu > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7f100744749e4fe547dece3bb6557fae5f0a7252 > git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > git fetch --no-tags linus master > git checkout 7f100744749e4fe547dece3bb6557fae5f0a7252 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 Thanks for the report! Just FYI, I followed the instructions above and got this: 12:32:35 ~/linux (kbuild)$ COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 Compiler will be installed in /home/bjorn/0day cd: received redirection to `https://download.01.org/0day-ci/cross-package/' lftpget -c https://download.01.org/0day-ci/cross-package/./clang-latest/clang.tar.xz tar Jxf clang-latest/clang.tar.xz -C /home/bjorn/0day make CONFIG_OF_ALL_DTBS=y CONFIG_DTC=y HOSTCC=/home/bjorn/0day/clang-latest/bin/clang CC=/home/bjorn/0day/clang-latest/bin/clang LD=/home/bjorn/0day/clang-latest/bin/ld.lld HOSTLD=/home/bjorn/0day/clang-latest/bin/ld.lld AR=/home/bjorn/0day/clang-latest/bin/llvm-ar NM=/home/bjorn/0day/clang-latest/bin/llvm-nm STRIP=/home/bjorn/0day/clang-latest/bin/llvm-strip OBJDUMP=/home/bjorn/0day/clang-latest/bin/llvm-objdump OBJSIZE=/home/bjorn/0day/clang-latest/bin/llvm-size READELF=/home/bjorn/0day/clang-latest/bin/llvm-readelf HOSTCXX=/home/bjorn/0day/clang-latest/bin/clang++ HOSTAR=/home/bjorn/0day/clang-latest/bin/llvm-ar CROSS_COMPILE=aarch64-linux-gnu- --jobs=16 W=1 ARCH=arm64 make: /home/bjorn/0day/clang-latest/bin/clang: Command not found SYNC include/config/auto.conf.cmd HOSTCC scripts/basic/fixdep /bin/sh: 1: /home/bjorn/0day/clang-latest/bin/clang: not found make[2]: *** [scripts/Makefile.host:95: scripts/basic/fixdep] Error 127 make[1]: *** [Makefile:533: scripts_basic] Error 2 make: *** [Makefile:709: include/config/auto.conf.cmd] Error 2 make: *** [include/config/auto.conf.cmd] Deleting file 'include/generated/autoconf.h' After adding a symlink "clang-latest -> clang/", it worked as expected and reproduced the warning. But I guess I'll wait for Vidya to fix it. > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@intel.com> > > All warnings (new ones prefixed by >>): > > In file included from drivers/pci/controller/dwc/pcie-tegra194.c:25: > In file included from include/linux/pci-acpi.h:12: > In file included from include/linux/acpi.h:35: > In file included from include/acpi/acpi_io.h:7: > In file included from arch/arm64/include/asm/acpi.h:12: > include/linux/efi.h:1093:34: warning: passing 1-byte aligned argument to 4-byte aligned parameter 2 of 'get_var' may result in an unaligned pointer access [-Walign-mismatch] > status = get_var(L"SecureBoot", &EFI_GLOBAL_VARIABLE_GUID, NULL, &size, > ^ > include/linux/efi.h:1101:24: warning: passing 1-byte aligned argument to 4-byte aligned parameter 2 of 'get_var' may result in an unaligned pointer access [-Walign-mismatch] > get_var(L"SetupMode", &EFI_GLOBAL_VARIABLE_GUID, NULL, &size, &setupmode); > ^ > >> drivers/pci/controller/dwc/pcie-tegra194.c:243:27: warning: unused variable 'pcie_gen_freq' [-Wunused-const-variable] > static const unsigned int pcie_gen_freq[] = { > ^ > drivers/pci/controller/dwc/pcie-tegra194.c:250:18: warning: unused variable 'event_cntr_ctrl_offset' [-Wunused-const-variable] > static const u32 event_cntr_ctrl_offset[] = { > ^ > drivers/pci/controller/dwc/pcie-tegra194.c:259:18: warning: unused variable 'event_cntr_data_offset' [-Wunused-const-variable] > static const u32 event_cntr_data_offset[] = { > ^ > 5 warnings generated. > > > vim +/pcie_gen_freq +243 drivers/pci/controller/dwc/pcie-tegra194.c > > c57247f940e8ea Vidya Sagar 2020-03-03 242 > 56e15a238d9278 Vidya Sagar 2019-08-13 @243 static const unsigned int pcie_gen_freq[] = { > 56e15a238d9278 Vidya Sagar 2019-08-13 244 GEN1_CORE_CLK_FREQ, > 56e15a238d9278 Vidya Sagar 2019-08-13 245 GEN2_CORE_CLK_FREQ, > 56e15a238d9278 Vidya Sagar 2019-08-13 246 GEN3_CORE_CLK_FREQ, > 56e15a238d9278 Vidya Sagar 2019-08-13 247 GEN4_CORE_CLK_FREQ > 56e15a238d9278 Vidya Sagar 2019-08-13 248 }; > 56e15a238d9278 Vidya Sagar 2019-08-13 249 > > :::::: The code at line 243 was first introduced by commit > :::::: 56e15a238d92788a2d09e0c5c26a5de1b3156931 PCI: tegra: Add Tegra194 PCIe support > > :::::: TO: Vidya Sagar <vidyas@nvidia.com> > :::::: CC: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
next prev parent reply other threads:[~2021-05-07 17:50 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-05-07 16:33 drivers/pci/controller/dwc/pcie-tegra194.c:243:27: warning: unused variable 'pcie_gen_freq' kernel test robot 2021-05-07 16:33 ` kernel test robot 2021-05-07 17:50 ` Bjorn Helgaas [this message] 2021-05-07 17:50 ` Bjorn Helgaas 2021-05-08 20:03 kernel test robot 2021-05-08 20:03 ` kernel test robot
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