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

From: kernel test robot
Date: Tue Jul 13 2021 - 05:26:44 EST


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@xxxxxxxxx>

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@xxxxxxxxxxxx

Attachment: .config.gz
Description: application/gzip