linux-kernel - drivers/net/wireless/mediatek/mt76/mt7915/init.c:134:41: error: passing 'const char *' to parameter of type 'char *' discards qualifiers

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Date:   Tue, 13 Jul 2021 17:26:20 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ryder Lee <ryder.lee@...iatek.com>
Cc:     clang-built-linux@...glegroups.com, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Felix Fietkau <nbd@....name>
Subject: drivers/net/wireless/mediatek/mt76/mt7915/init.c:134:41: error:
 passing 'const char *' to parameter of type 'char *' discards qualifiers

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   7fef2edf7cc753b51f7ccc74993971b0a9c81eca
commit: 34b877d972bec8cbf397a57393317672cf92996f mt76: mt7915: add thermal cooling device support
date:   3 weeks ago
config: powerpc-randconfig-r003-20210713 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8d69635ed9ecf36fd0ca85906bfde17949671cbe)
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 powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34b877d972bec8cbf397a57393317672cf92996f
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 34b877d972bec8cbf397a57393317672cf92996f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   In file included from drivers/net/wireless/mediatek/mt76/mt7915/init.c:4:
   In file included from include/linux/etherdevice.h:20:
   In file included from include/linux/if_ether.h:19:
   In file included from include/linux/skbuff.h:13:
   In file included from include/linux/kernel.h:12:
   In file included from include/linux/bitops.h:32:
   In file included from arch/powerpc/include/asm/bitops.h:62:
   arch/powerpc/include/asm/barrier.h:49:9: warning: '__lwsync' macro redefined [-Wmacro-redefined]
   #define __lwsync()      __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory")
           ^
   <built-in>:309:9: note: previous definition is here
   #define __lwsync __builtin_ppc_lwsync
           ^
>> drivers/net/wireless/mediatek/mt76/mt7915/init.c:134:41: error: passing 'const char *' to parameter of type 'char *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           cdev = thermal_cooling_device_register(wiphy_name(wiphy), phy,
                                                  ^~~~~~~~~~~~~~~~~
   include/linux/thermal.h:407:39: note: passing argument to parameter 'type' here
   thermal_cooling_device_register(char *type, void *devdata,
                                         ^
   1 warning and 1 error generated.


vim +134 drivers/net/wireless/mediatek/mt76/mt7915/init.c

   127	
   128	static int mt7915_thermal_init(struct mt7915_phy *phy)
   129	{
   130		struct wiphy *wiphy = phy->mt76->hw->wiphy;
   131		struct thermal_cooling_device *cdev;
   132		struct device *hwmon;
   133	
 > 134		cdev = thermal_cooling_device_register(wiphy_name(wiphy), phy,
   135						       &mt7915_thermal_ops);
   136		if (!IS_ERR(cdev)) {
   137			if (sysfs_create_link(&wiphy->dev.kobj, &cdev->device.kobj,
   138					      "cooling_device") < 0)
   139				thermal_cooling_device_unregister(cdev);
   140			else
   141				phy->cdev = cdev;
   142		}
   143	
   144		if (!IS_REACHABLE(CONFIG_HWMON))
   145			return 0;
   146	
   147		hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev,
   148							       wiphy_name(wiphy), phy,
   149							       mt7915_hwmon_groups);
   150		if (IS_ERR(hwmon))
   151			return PTR_ERR(hwmon);
   152	
   153		return 0;
   154	}
   155	

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

Download attachment ".config.gz" of type "application/gzip" (43382 bytes)