Subject: Re: [PATCH v1 1/6] staging: qlge: Initialize devlink health dump framework for the dlge driver

From: kernel test robot <[email-masked]>
Date: Fri, 9 Oct 2020 01:45:00 +0800

Hi Coiby,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on staging/staging-testing]

url:    https://github.com/0day-ci/linux/commits/Coiby-Xu/staging-qlge-Re-writing-the-debugging-features/20201008-200002
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git 76c3bdd67d27289b9e407113821eab2a70bbcca6
config: arm64-randconfig-r025-20201008 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 8da0df3d6dcc0dd42740be60b0da4ec201190904)
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://github.com/0day-ci/linux/commit/dda18d66af0554f1f2b69f9a61335f3de9ec5124
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Coiby-Xu/staging-qlge-Re-writing-the-debugging-features/20201008-200002
        git checkout dda18d66af0554f1f2b69f9a61335f3de9ec5124
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email-masked]>

All warnings (new ones prefixed by >>):

>> drivers/staging/qlge/qlge_devlink.c:37:9: warning: variable 'err' is uninitialized when used here [-Wuninitialized]
           return err;
                  ^~~
   drivers/staging/qlge/qlge_devlink.c:19:9: note: initialize the variable 'err' to silence this warning
           int err;
                  ^
                   = 0
   1 warning generated.

vim +/err +37 drivers/staging/qlge/qlge_devlink.c

    16	
    17	int qlge_health_create_reporters(struct qlge_devlink *priv)
    18	{
    19		int err;
    20	
    21		struct devlink_health_reporter *reporter;
    22		struct devlink *devlink;
    23	
    24		devlink = priv_to_devlink(priv);
    25		reporter =
    26			devlink_health_reporter_create(devlink, &qlge_reporter_ops,
    27						       0,
    28						       priv);
    29		if (IS_ERR(reporter)) {
    30			netdev_warn(priv->ndev,
    31				    "Failed to create reporter, err = %ld\n",
    32				    PTR_ERR(reporter));
    33			return PTR_ERR(reporter);
    34		}
    35		priv->reporter = reporter;
    36	
  > 37		return err;

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email-masked]