drivers/clk/imx/clk-imx31.c:54:28: warning: unused variable 'uart_clks'

From: kernel test robot
Date: Wed Jan 27 2021 - 22:04:41 EST


Hi Fabio,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 76c057c84d286140c6c416c3b4ba832cd1d8984e
commit: 30c1951790df5e7ad6b4dbc1c46a6361dce6f946 clk: imx: imx31: Remove mx31_clocks_init()
date: 4 months ago
config: arm-randconfig-r011-20210128 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 48bdd676a1d1338c10541460bf5beb69ac17e451)
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
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=30c1951790df5e7ad6b4dbc1c46a6361dce6f946
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 30c1951790df5e7ad6b4dbc1c46a6361dce6f946
# 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 <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> drivers/clk/imx/clk-imx31.c:54:28: warning: unused variable 'uart_clks' [-Wunused-const-variable]
static struct clk ** const uart_clks[] __initconst = {
^
1 warning generated.


vim +/uart_clks +54 drivers/clk/imx/clk-imx31.c

95878cbed89504 arch/arm/mach-imx/clk-imx31.c Sascha Hauer 2012-03-18 53
5c678cdd02f253 drivers/clk/imx/clk-imx31.c Lucas Stach 2015-09-21 @54 static struct clk ** const uart_clks[] __initconst = {
5c678cdd02f253 drivers/clk/imx/clk-imx31.c Lucas Stach 2015-09-21 55 &clk[ipg],
5c678cdd02f253 drivers/clk/imx/clk-imx31.c Lucas Stach 2015-09-21 56 &clk[uart1_gate],
5c678cdd02f253 drivers/clk/imx/clk-imx31.c Lucas Stach 2015-09-21 57 &clk[uart2_gate],
5c678cdd02f253 drivers/clk/imx/clk-imx31.c Lucas Stach 2015-09-21 58 &clk[uart3_gate],
5c678cdd02f253 drivers/clk/imx/clk-imx31.c Lucas Stach 2015-09-21 59 &clk[uart4_gate],
5c678cdd02f253 drivers/clk/imx/clk-imx31.c Lucas Stach 2015-09-21 60 &clk[uart5_gate],
5c678cdd02f253 drivers/clk/imx/clk-imx31.c Lucas Stach 2015-09-21 61 NULL
5c678cdd02f253 drivers/clk/imx/clk-imx31.c Lucas Stach 2015-09-21 62 };
5c678cdd02f253 drivers/clk/imx/clk-imx31.c Lucas Stach 2015-09-21 63

:::::: The code at line 54 was first introduced by commit
:::::: 5c678cdd02f25398b4908638d672b134cff9d59c clk: imx31: retain early UART clocks during kernel init

:::::: TO: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
:::::: CC: Shawn Guo <shawnguo@xxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

Attachment: .config.gz
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