On Mon, Jun 8, 2020 at 2:38 AM kernel test robot <[email protected]> wrote:
>
> Hi Baolin,
>
> First bad commit (maybe != root cause):
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> master
> head: 3b69e8b4571125bec1f77f886174fe6cab6b9d75
> commit: ffd0bbfb378ecd56eac22bf932ccdbf89ac7f725 hwspinlock: Allow drivers to
> be built with COMPILE_TEST
> date: 2 months ago
> config: arm-randconfig-r001-20200607 (attached as .config)
> compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project
> e429cffd4f228f70c1d9df0e5d77c08590dd9766)
> reproduce (this is a W=1 build):
> wget
> https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
> ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # install arm cross compiling tool for clang build
> # apt-get install binutils-arm-linux-gnueabi
> git checkout ffd0bbfb378ecd56eac22bf932ccdbf89ac7f725
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <[email protected]>
>
> All warnings (new ones prefixed by >>, old ones prefixed by <<):
>
> >> drivers/hwspinlock/sirf_hwspinlock.c:87:34: warning: unused variable
> >> 'sirf_hwpinlock_ids' [-Wunused-const-variable]
> static const struct of_device_id sirf_hwpinlock_ids[] = {
In your testing configuration, the CONFIG_OF is not select, so the
macro 'of_match_ptr' becomes NULL, which triggers this waring. I think
we can remove the redundant "of_match_ptr" to fix this warning. Thanks
for your report.
> ^
> 1 warning generated.
>
> vim +/sirf_hwpinlock_ids +87 drivers/hwspinlock/sirf_hwspinlock.c
>
> cc16d664e21ef6 Wei Chen 2015-05-26 86
> cc16d664e21ef6 Wei Chen 2015-05-26 @87 static const struct of_device_id
> sirf_hwpinlock_ids[] = {
> cc16d664e21ef6 Wei Chen 2015-05-26 88 { .compatible =
> "sirf,hwspinlock", },
> cc16d664e21ef6 Wei Chen 2015-05-26 89 {},
> cc16d664e21ef6 Wei Chen 2015-05-26 90 };
> cc16d664e21ef6 Wei Chen 2015-05-26 91 MODULE_DEVICE_TABLE(of,
> sirf_hwpinlock_ids);
> cc16d664e21ef6 Wei Chen 2015-05-26 92
>
> :::::: The code at line 87 was first introduced by commit
> :::::: cc16d664e21ef640faaf51e9952384cf90b92d9f hwspinlock: add a CSR atlas7
> driver
>
> :::::: TO: Wei Chen <[email protected]>
> :::::: CC: Ohad Ben-Cohen <[email protected]>
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/[email protected]
--
Baolin Wang
