linux-kernel - drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c:96: undefined reference to `thermal_zone_device

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Date:   Thu, 8 Nov 2018 15:08:40 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c:96: undefined
 reference to `thermal_zone_device_register'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   85758777c2a227fd1541b6dd122a08ab79c347ce
commit: e70a57fa59bb7fefe063780a49e063d0d0f61863 cxgb4: fix thermal configuration dependencies
date:   4 weeks ago
config: x86_64-randconfig-s0-11081213 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
reproduce:
        git checkout e70a57fa59bb7fefe063780a49e063d0d0f61863
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.o: In function `cxgb4_thermal_init':
>> drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c:96: undefined reference to `thermal_zone_device_register'
   drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.o: In function `cxgb4_thermal_remove':
>> drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c:112: undefined reference to `thermal_zone_device_unregister'

vim +96 drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c

b1871915 Ganesh Goudar 2018-10-09   72  
b1871915 Ganesh Goudar 2018-10-09   73  int cxgb4_thermal_init(struct adapter *adap)
b1871915 Ganesh Goudar 2018-10-09   74  {
b1871915 Ganesh Goudar 2018-10-09   75  	struct ch_thermal *ch_thermal = &adap->ch_thermal;
b1871915 Ganesh Goudar 2018-10-09   76  	int num_trip = CXGB4_NUM_TRIPS;
b1871915 Ganesh Goudar 2018-10-09   77  	u32 param, val;
b1871915 Ganesh Goudar 2018-10-09   78  	int ret;
b1871915 Ganesh Goudar 2018-10-09   79  
b1871915 Ganesh Goudar 2018-10-09   80  	/* on older firmwares we may not get the trip temperature,
b1871915 Ganesh Goudar 2018-10-09   81  	 * set the num of trips to 0.
b1871915 Ganesh Goudar 2018-10-09   82  	 */
b1871915 Ganesh Goudar 2018-10-09   83  	param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
b1871915 Ganesh Goudar 2018-10-09   84  		 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_DIAG) |
b1871915 Ganesh Goudar 2018-10-09   85  		 FW_PARAMS_PARAM_Y_V(FW_PARAM_DEV_DIAG_MAXTMPTHRESH));
b1871915 Ganesh Goudar 2018-10-09   86  
b1871915 Ganesh Goudar 2018-10-09   87  	ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1,
b1871915 Ganesh Goudar 2018-10-09   88  			      &param, &val);
b1871915 Ganesh Goudar 2018-10-09   89  	if (ret < 0) {
b1871915 Ganesh Goudar 2018-10-09   90  		num_trip = 0; /* could not get trip temperature */
b1871915 Ganesh Goudar 2018-10-09   91  	} else {
b1871915 Ganesh Goudar 2018-10-09   92  		ch_thermal->trip_temp = val * 1000;
b1871915 Ganesh Goudar 2018-10-09   93  		ch_thermal->trip_type = THERMAL_TRIP_CRITICAL;
b1871915 Ganesh Goudar 2018-10-09   94  	}
b1871915 Ganesh Goudar 2018-10-09   95  
b1871915 Ganesh Goudar 2018-10-09  @96  	ch_thermal->tzdev = thermal_zone_device_register("cxgb4", num_trip,
b1871915 Ganesh Goudar 2018-10-09   97  							 0, adap,
b1871915 Ganesh Goudar 2018-10-09   98  							 &cxgb4_thermal_ops,
b1871915 Ganesh Goudar 2018-10-09   99  							 NULL, 0, 0);
b1871915 Ganesh Goudar 2018-10-09  100  	if (IS_ERR(ch_thermal->tzdev)) {
b1871915 Ganesh Goudar 2018-10-09  101  		ret = PTR_ERR(ch_thermal->tzdev);
b1871915 Ganesh Goudar 2018-10-09  102  		dev_err(adap->pdev_dev, "Failed to register thermal zone\n");
b1871915 Ganesh Goudar 2018-10-09  103  		ch_thermal->tzdev = NULL;
b1871915 Ganesh Goudar 2018-10-09  104  		return ret;
b1871915 Ganesh Goudar 2018-10-09  105  	}
b1871915 Ganesh Goudar 2018-10-09  106  	return 0;
b1871915 Ganesh Goudar 2018-10-09  107  }
b1871915 Ganesh Goudar 2018-10-09  108  
b1871915 Ganesh Goudar 2018-10-09  109  int cxgb4_thermal_remove(struct adapter *adap)
b1871915 Ganesh Goudar 2018-10-09  110  {
b1871915 Ganesh Goudar 2018-10-09  111  	if (adap->ch_thermal.tzdev)
b1871915 Ganesh Goudar 2018-10-09 @112  		thermal_zone_device_unregister(adap->ch_thermal.tzdev);

:::::: The code at line 96 was first introduced by commit
:::::: b187191577629b5358acf4e234809ee8d441ceb4 cxgb4: Add thermal zone support

:::::: TO: Ganesh Goudar <ganeshgr@...lsio.com>
:::::: CC: David S. Miller <davem@...emloft.net>

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