[wsa:wdt/no-register-err 6/6] drivers/watchdog/visconti_wdt.c:121:6: warning: unused variable 'ret'

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git wdt/no-register-err
head:   c462756b3b70c001e5920601aa078ef3731fc291
commit: c462756b3b70c001e5920601aa078ef3731fc291 [6/6] watchdog: visconti: don't print superfluous errors
config: x86_64-buildonly-randconfig-001-20250812 (https://download.01.org/0day-ci/archive/20250813/202508130035.9LtioUyg-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250813/202508130035.9LtioUyg-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508130035.9LtioUyg-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/watchdog/visconti_wdt.c:121:6: warning: unused variable 'ret' [-Wunused-variable]
     121 |         int ret;
         |             ^~~
   1 warning generated.


vim +/ret +121 drivers/watchdog/visconti_wdt.c

c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  114  
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  115  static int visconti_wdt_probe(struct platform_device *pdev)
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  116  {
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  117  	struct watchdog_device *wdev;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  118  	struct visconti_wdt_priv *priv;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  119  	struct device *dev = &pdev->dev;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  120  	struct clk *clk;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05 @121  	int ret;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  122  	unsigned long clk_freq;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  123  
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  124  	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  125  	if (!priv)
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  126  		return -ENOMEM;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  127  
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  128  	priv->base = devm_platform_ioremap_resource(pdev, 0);
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  129  	if (IS_ERR(priv->base))
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  130  		return PTR_ERR(priv->base);
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  131  
8c5210dbdf7e92 Christophe JAILLET 2022-12-30  132  	clk = devm_clk_get_enabled(dev, NULL);
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  133  	if (IS_ERR(clk))
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  134  		return dev_err_probe(dev, PTR_ERR(clk), "Could not get clock\n");
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  135  
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  136  	clk_freq = clk_get_rate(clk);
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  137  	if (!clk_freq)
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  138  		return -EINVAL;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  139  
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  140  	priv->div = clk_freq / VISCONTI_WDT_FREQ;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  141  
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  142  	/* Initialize struct watchdog_device. */
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  143  	wdev = &priv->wdev;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  144  	wdev->info = &visconti_wdt_info;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  145  	wdev->ops = &visconti_wdt_ops;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  146  	wdev->parent = dev;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  147  	wdev->min_timeout = 1;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  148  	wdev->max_timeout = 0xffffffff / VISCONTI_WDT_FREQ;
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  149  	wdev->timeout = min(wdev->max_timeout, WDT_DEFAULT_TIMEOUT);
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  150  
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  151  	watchdog_set_drvdata(wdev, priv);
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  152  	watchdog_set_nowayout(wdev, nowayout);
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  153  	watchdog_stop_on_unregister(wdev);
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  154  
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  155  	/* This overrides the default timeout only if DT configuration was found */
c462756b3b70c0 Wolfram Sang       2025-08-12  156  	watchdog_init_timeout(wdev, 0, dev);
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  157  
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  158  	return devm_watchdog_register_device(dev, wdev);
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  159  }
c5b8e4644607b0 Nobuhiro Iwamatsu  2020-10-05  160  

:::::: The code at line 121 was first introduced by commit
:::::: c5b8e4644607b0319fd86a36fb0caad54ee2021e watchdog: Add Toshiba Visconti watchdog driver

:::::: TO: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
:::::: CC: Wim Van Sebroeck <wim@linux-watchdog.org>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki