Re: [PATCH v1] drivers/clk/clk: check return value of clk_pm_runtime_get()

From: kernel test robot
Date: Sun Aug 28 2022 - 19:27:45 EST


Hi Li,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on clk/clk-next]
[also build test WARNING on linus/master v6.0-rc2 next-20220826]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Li-Zhong/drivers-clk-clk-check-return-value-of-clk_pm_runtime_get/20220829-042043
base: https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-next
config: riscv-randconfig-r042-20220828 (https://download.01.org/0day-ci/archive/20220829/202208290728.M8AblulP-lkp@xxxxxxxxx/config)
compiler: riscv64-linux-gcc (GCC) 12.1.0
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
# https://github.com/intel-lab-lkp/linux/commit/26ebbe49c7b40cb8465ed2bba4e4e62c3a55bb93
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Li-Zhong/drivers-clk-clk-check-return-value-of-clk_pm_runtime_get/20220829-042043
git checkout 26ebbe49c7b40cb8465ed2bba4e4e62c3a55bb93
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/clk/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

drivers/clk/clk.c: In function 'clk_summary_show_subtree':
>> drivers/clk/clk.c:3014:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
3014 | if (ret)
| ^~
drivers/clk/clk.c:3016:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
3016 | clk_summary_show_one(s, c, level);
| ^~~~~~~~~~~~~~~~~~~~


vim +/if +3014 drivers/clk/clk.c

3006
3007 static void clk_summary_show_subtree(struct seq_file *s, struct clk_core *c,
3008 int level)
3009 {
3010 struct clk_core *child;
3011 int ret;
3012
3013 ret = clk_pm_runtime_get(c);
> 3014 if (ret)
3015 return;
3016 clk_summary_show_one(s, c, level);
3017 clk_pm_runtime_put(c);
3018
3019 hlist_for_each_entry(child, &c->children, child_node)
3020 clk_summary_show_subtree(s, child, level + 1);
3021 }
3022

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