Re: [PATCH V2 2/2] leds: add mp3326 driver

From: kernel test robot
Date: Tue Jun 11 2024 - 19:29:26 EST

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Hi Yuxi,

kernel test robot noticed the following build errors:

[auto build test ERROR on pavel-leds/for-next]
[also build test ERROR on linus/master v6.10-rc3 next-20240611]
[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/Yuxi-Wang/dt-bindings-leds-add-mps-mp3326-LED/20240611-165810
base: git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds.git for-next
patch link: https://lore.kernel.org/r/20240611083236.1609-3-Yuxi.Wang%40monolithicpower.com
patch subject: [PATCH V2 2/2] leds: add mp3326 driver
config: s390-randconfig-r081-20240612 (https://download.01.org/0day-ci/archive/20240612/202406120751.SskLd0jn-lkp@xxxxxxxxx/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 4403cdbaf01379de96f8d0d6ea4f51a085e37766)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240612/202406120751.SskLd0jn-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202406120751.SskLd0jn-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

In file included from drivers/leds/leds-mp3326.c:10:
In file included from include/linux/module.h:19:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:173:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:1856:
include/linux/vmstat.h:502:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
502 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
503 | item];
| ~~~~
include/linux/vmstat.h:509:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
509 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
510 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:516:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
516 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:521:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
521 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
522 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:530:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
530 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
531 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/leds/leds-mp3326.c:13:
In file included from include/linux/regmap.h:20:
In file included from include/linux/iopoll.h:14:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
547 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from drivers/leds/leds-mp3326.c:13:
In file included from include/linux/regmap.h:20:
In file included from include/linux/iopoll.h:14:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from drivers/leds/leds-mp3326.c:13:
In file included from include/linux/regmap.h:20:
In file included from include/linux/iopoll.h:14:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
584 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
692 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
700 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
708 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
717 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
726 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
735 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
drivers/leds/leds-mp3326.c:232:41: warning: variable 'i' is uninitialized when used here [-Wuninitialized]
232 | chip->regmap_fields[led->subled_info[i].channel]
| ^
drivers/leds/leds-mp3326.c:220:7: note: initialize the variable 'i' to silence this warning
220 | int i;
| ^
| = 0
>> drivers/leds/leds-mp3326.c:493:8: error: incompatible function pointer types initializing 'ssize_t (*)(struct device *, struct device_attribute *, char *)' (aka 'long (*)(struct device *, struct device_attribute *, char *)') with an expression of type 'int (struct device *, struct device_attribute *, char *)' [-Wincompatible-function-pointer-types]
493 | static DEVICE_ATTR_RW(led_pwm);
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/device.h:132:45: note: expanded from macro 'DEVICE_ATTR_RW'
132 | struct device_attribute dev_attr_##_name = __ATTR_RW(_name)
| ^~~~~~~~~~~~~~~~
include/linux/sysfs.h:138:46: note: expanded from macro '__ATTR_RW'
138 | #define __ATTR_RW(_name) __ATTR(_name, 0644, _name##_show, _name##_store)
| ^~~~~~~~~~~~
<scratch space>:105:1: note: expanded from here
105 | led_pwm_show
| ^~~~~~~~~~~~
include/linux/sysfs.h:104:10: note: expanded from macro '__ATTR'
104 | .show = _show, \
| ^~~~~
>> drivers/leds/leds-mp3326.c:493:8: error: incompatible function pointer types initializing 'ssize_t (*)(struct device *, struct device_attribute *, const char *, size_t)' (aka 'long (*)(struct device *, struct device_attribute *, const char *, unsigned long)') with an expression of type 'int (struct device *, struct device_attribute *, const char *, size_t)' (aka 'int (struct device *, struct device_attribute *, const char *, unsigned long)') [-Wincompatible-function-pointer-types]
493 | static DEVICE_ATTR_RW(led_pwm);
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/device.h:132:45: note: expanded from macro 'DEVICE_ATTR_RW'
132 | struct device_attribute dev_attr_##_name = __ATTR_RW(_name)
| ^~~~~~~~~~~~~~~~
include/linux/sysfs.h:138:60: note: expanded from macro '__ATTR_RW'
138 | #define __ATTR_RW(_name) __ATTR(_name, 0644, _name##_show, _name##_store)
| ^~~~~~~~~~~~~
<scratch space>:106:1: note: expanded from here
106 | led_pwm_store
| ^~~~~~~~~~~~~
include/linux/sysfs.h:105:11: note: expanded from macro '__ATTR'
105 | .store = _store, \
| ^~~~~~
drivers/leds/leds-mp3326.c:494:8: error: incompatible function pointer types initializing 'ssize_t (*)(struct device *, struct device_attribute *, char *)' (aka 'long (*)(struct device *, struct device_attribute *, char *)') with an expression of type 'int (struct device *, struct device_attribute *, char *)' [-Wincompatible-function-pointer-types]
494 | static DEVICE_ATTR_RW(led_enable);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/device.h:132:45: note: expanded from macro 'DEVICE_ATTR_RW'
132 | struct device_attribute dev_attr_##_name = __ATTR_RW(_name)
| ^~~~~~~~~~~~~~~~
include/linux/sysfs.h:138:46: note: expanded from macro '__ATTR_RW'
138 | #define __ATTR_RW(_name) __ATTR(_name, 0644, _name##_show, _name##_store)
| ^~~~~~~~~~~~
<scratch space>:109:1: note: expanded from here
109 | led_enable_show
| ^~~~~~~~~~~~~~~
include/linux/sysfs.h:104:10: note: expanded from macro '__ATTR'
104 | .show = _show, \
| ^~~~~
drivers/leds/leds-mp3326.c:494:8: error: incompatible function pointer types initializing 'ssize_t (*)(struct device *, struct device_attribute *, const char *, size_t)' (aka 'long (*)(struct device *, struct device_attribute *, const char *, unsigned long)') with an expression of type 'int (struct device *, struct device_attribute *, const char *, size_t)' (aka 'int (struct device *, struct device_attribute *, const char *, unsigned long)') [-Wincompatible-function-pointer-types]
494 | static DEVICE_ATTR_RW(led_enable);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/device.h:132:45: note: expanded from macro 'DEVICE_ATTR_RW'
132 | struct device_attribute dev_attr_##_name = __ATTR_RW(_name)
| ^~~~~~~~~~~~~~~~
include/linux/sysfs.h:138:60: note: expanded from macro '__ATTR_RW'
138 | #define __ATTR_RW(_name) __ATTR(_name, 0644, _name##_show, _name##_store)
| ^~~~~~~~~~~~~
<scratch space>:110:1: note: expanded from here
110 | led_enable_store
| ^~~~~~~~~~~~~~~~
include/linux/sysfs.h:105:11: note: expanded from macro '__ATTR'
105 | .store = _store, \
| ^~~~~~
drivers/leds/leds-mp3326.c:495:8: error: incompatible function pointer types initializing 'ssize_t (*)(struct device *, struct device_attribute *, char *)' (aka 'long (*)(struct device *, struct device_attribute *, char *)') with an expression of type 'int (struct device *, struct device_attribute *, char *)' [-Wincompatible-function-pointer-types]
495 | static DEVICE_ATTR_RO(led_short_fault);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/device.h:136:45: note: expanded from macro 'DEVICE_ATTR_RO'
136 | struct device_attribute dev_attr_##_name = __ATTR_RO(_name)
| ^~~~~~~~~~~~~~~~
include/linux/sysfs.h:117:10: note: expanded from macro '__ATTR_RO'
117 | .show = _name##_show, \
| ^~~~~~~~~~~~
<scratch space>:114:1: note: expanded from here
114 | led_short_fault_show
| ^~~~~~~~~~~~~~~~~~~~
drivers/leds/leds-mp3326.c:496:8: error: incompatible function pointer types initializing 'ssize_t (*)(struct device *, struct device_attribute *, char *)' (aka 'long (*)(struct device *, struct device_attribute *, char *)') with an expression of type 'int (struct device *, struct device_attribute *, char *)' [-Wincompatible-function-pointer-types]
496 | static DEVICE_ATTR_RO(led_open_fault);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/device.h:136:45: note: expanded from macro 'DEVICE_ATTR_RO'
136 | struct device_attribute dev_attr_##_name = __ATTR_RO(_name)
| ^~~~~~~~~~~~~~~~
include/linux/sysfs.h:117:10: note: expanded from macro '__ATTR_RO'
117 | .show = _name##_show, \
| ^~~~~~~~~~~~
<scratch space>:117:1: note: expanded from here
117 | led_open_fault_show
| ^~~~~~~~~~~~~~~~~~~
drivers/leds/leds-mp3326.c:686:11: error: incompatible function pointer types initializing 'int (*)(struct i2c_client *, const struct i2c_device_id *)' with an expression of type 'int (struct i2c_client *)' [-Wincompatible-function-pointer-types]
686 | .probe = mp3326_leds_probe,
| ^~~~~~~~~~~~~~~~~
18 warnings and 7 errors generated.

vim +493 drivers/leds/leds-mp3326.c

492
> 493 static DEVICE_ATTR_RW(led_pwm);
494 static DEVICE_ATTR_RW(led_enable);
495 static DEVICE_ATTR_RO(led_short_fault);
496 static DEVICE_ATTR_RO(led_open_fault);
497

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In reply to: Krzysztof Kozlowski: "Re: [PATCH V2 2/2] leds: add mp3326 driver"
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