[linux-next:master 2764/5318] drivers/net/can/flexcan.c:666 flexcan_clks_enable() error: uninitialized symbol 'err'.

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   2f73937c9aa561e2082839bc1a8efaac75d6e244
commit: d9cead75b1c66b4660b4f87ff339234042d7c6a5 [2764/5318] can: flexcan: add mcf5441x support
config: h8300-randconfig-m031-20210804 (attached as .config)
compiler: h8300-linux-gcc (GCC) 10.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

smatch warnings:
drivers/net/can/flexcan.c:666 flexcan_clks_enable() error: uninitialized symbol 'err'.

vim +/err +666 drivers/net/can/flexcan.c

ca10989632d882 Aisheng Dong             2018-11-30  650  static int flexcan_clks_enable(const struct flexcan_priv *priv)
ca10989632d882 Aisheng Dong             2018-11-30  651  {
ca10989632d882 Aisheng Dong             2018-11-30  652  	int err;
ca10989632d882 Aisheng Dong             2018-11-30  653  
d9cead75b1c66b Angelo Dureghello        2021-07-02  654  	if (priv->clk_ipg) {
ca10989632d882 Aisheng Dong             2018-11-30  655  		err = clk_prepare_enable(priv->clk_ipg);
ca10989632d882 Aisheng Dong             2018-11-30  656  		if (err)
ca10989632d882 Aisheng Dong             2018-11-30  657  			return err;
d9cead75b1c66b Angelo Dureghello        2021-07-02  658  	}
ca10989632d882 Aisheng Dong             2018-11-30  659  
d9cead75b1c66b Angelo Dureghello        2021-07-02  660  	if (priv->clk_per) {
ca10989632d882 Aisheng Dong             2018-11-30  661  		err = clk_prepare_enable(priv->clk_per);
ca10989632d882 Aisheng Dong             2018-11-30  662  		if (err)
ca10989632d882 Aisheng Dong             2018-11-30  663  			clk_disable_unprepare(priv->clk_ipg);
d9cead75b1c66b Angelo Dureghello        2021-07-02  664  	}

Smatch is complaining that both priv->clk_ipg and priv->clk_per can be
false...  Probably impossible in real life.

ca10989632d882 Aisheng Dong             2018-11-30  665  
ca10989632d882 Aisheng Dong             2018-11-30 @666  	return err;
ca10989632d882 Aisheng Dong             2018-11-30  667  }

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





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