linux-kernel - Re: [PATCH] extcon: usbc-tusb320: unregister typec port on driver removal

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Date:   Tue, 14 Mar 2023 14:09:23 +0800
From:   kernel test robot <lkp@...el.com>
To:     Alvin Šipraga <alvin@...s.dk>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Marek Vasut <marex@...x.de>,
        Alvin Šipraga <alsi@...g-olufsen.dk>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-usb@...r.kernel.org, stable@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] extcon: usbc-tusb320: unregister typec port on driver
 removal

Hi Alvin,

I love your patch! Perhaps something to improve:

[auto build test WARNING on chanwoo-extcon/extcon-next]
[also build test WARNING on linus/master v6.3-rc2 next-20230310]
[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/Alvin-ipraga/extcon-usbc-tusb320-unregister-typec-port-on-driver-removal/20230313-210245
base:   https://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon.git extcon-next
patch link:    https://lore.kernel.org/r/20230313130105.4183296-1-alvin%40pqrs.dk
patch subject: [PATCH] extcon: usbc-tusb320: unregister typec port on driver removal
config: i386-randconfig-a013-20230313 (https://download.01.org/0day-ci/archive/20230314/202303141316.EltVGG8V-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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/fe414069d19f6d59c7c34f820459f4114e2de136
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Alvin-ipraga/extcon-usbc-tusb320-unregister-typec-port-on-driver-removal/20230313-210245
        git checkout fe414069d19f6d59c7c34f820459f4114e2de136
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/extcon/ drivers/media/common/videobuf2/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303141316.EltVGG8V-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/extcon/extcon-usbc-tusb320.c:429:8: warning: expression result unused [-Wunused-value]
           priv->connector_fwnode;
           ~~~~  ^~~~~~~~~~~~~~~~
   1 warning generated.


vim +429 drivers/extcon/extcon-usbc-tusb320.c

   379	
   380	static int tusb320_typec_probe(struct i2c_client *client,
   381				       struct tusb320_priv *priv)
   382	{
   383		struct fwnode_handle *connector;
   384		const char *cap_str;
   385		int ret;
   386	
   387		/* The Type-C connector is optional, for backward compatibility. */
   388		connector = device_get_named_child_node(&client->dev, "connector");
   389		if (!connector)
   390			return 0;
   391	
   392		/* Type-C connector found. */
   393		ret = typec_get_fw_cap(&priv->cap, connector);
   394		if (ret)
   395			goto err_put;
   396	
   397		priv->port_type = priv->cap.type;
   398	
   399		/* This goes into register 0x8 field CURRENT_MODE_ADVERTISE */
   400		ret = fwnode_property_read_string(connector, "typec-power-opmode", &cap_str);
   401		if (ret)
   402			goto err_put;
   403	
   404		ret = typec_find_pwr_opmode(cap_str);
   405		if (ret < 0)
   406			goto err_put;
   407	
   408		priv->pwr_opmode = ret;
   409	
   410		/* Initialize the hardware with the devicetree settings. */
   411		ret = tusb320_set_adv_pwr_mode(priv);
   412		if (ret)
   413			goto err_put;
   414	
   415		priv->cap.revision		= USB_TYPEC_REV_1_1;
   416		priv->cap.accessory[0]		= TYPEC_ACCESSORY_AUDIO;
   417		priv->cap.accessory[1]		= TYPEC_ACCESSORY_DEBUG;
   418		priv->cap.orientation_aware	= true;
   419		priv->cap.driver_data		= priv;
   420		priv->cap.ops			= &tusb320_typec_ops;
   421		priv->cap.fwnode		= connector;
   422	
   423		priv->port = typec_register_port(&client->dev, &priv->cap);
   424		if (IS_ERR(priv->port)) {
   425			ret = PTR_ERR(priv->port);
   426			goto err_put;
   427		}
   428	
 > 429		priv->connector_fwnode;
   430	
   431		return 0;
   432	
   433	err_put:
   434		fwnode_handle_put(connector);
   435	
   436		return ret;
   437	}
   438	

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