[PATCH v2 0/2] hwmon: (adt7475) Handle DT unaware platforms

[PATCH v2 0/2] hwmon: (adt7475) Handle DT unaware platforms

[Chris Packham]

This series addresses an issue reported by Mariusz and has an additional
cleanup for master. The changes are all updating of_property_read* ->
device_property_read* so it should be a noop for DT aware platforms.

Chris Packham (2):
  hwmon: (adt7475) Use device_property APIs when configuring polarity
  hwmon: (adt7475) Convert to use device_property APIs

 drivers/hwmon/adt7475.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

-- 
2.40.0

[PATCH v2 1/2] hwmon: (adt7475) Use device_property APIs when configuring polarity

[Chris Packham]

On DT unaware platforms of_property_read_u32_array() returns -ENOSYS
which wasn't handled by the code treating adi,pwm-active-state as
optional. Update the code to use device_property_read_u32_array() which
deals gracefully with DT unaware platforms.

Fixes: 86da28eed4fb ("hwmon: (adt7475) Add support for inverting pwm output")
Reported-by: Mariusz Białończyk <manio@skyboo.net>
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
---

Notes:
    I've not currently got access to a DT unaware platform with an ADT7475
    chip so I'm not 100% sure that this will fix the problem Mariusz
    reported but looking at drivers I think this approach is correct.
    
    Changes in v2:
    - use device_property_read_u32_array instead of checking for -ENOSYS

 drivers/hwmon/adt7475.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c
index 6e4c92b500b8..6a6ebcc896b1 100644
--- a/drivers/hwmon/adt7475.c
+++ b/drivers/hwmon/adt7475.c
@@ -1604,9 +1604,9 @@ static int adt7475_set_pwm_polarity(struct i2c_client *client)
 	int ret, i;
 	u8 val;
 
-	ret = of_property_read_u32_array(client->dev.of_node,
-					 "adi,pwm-active-state", states,
-					 ARRAY_SIZE(states));
+	ret = device_property_read_u32_array(&client->dev,
+					     "adi,pwm-active-state", states,
+					     ARRAY_SIZE(states));
 	if (ret)
 		return ret;
 
-- 
2.40.0

[PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs

[Chris Packham]

Instead of of_property_read_*() use the equivalent
device_property_read_*() API. This will allow these properties to be
used on DT unaware platforms. For DT aware platforms this will be a
noop.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
---

Notes:
    This is an additional update for master from the preceeding bugfix
    commit. I've not added a fixes tag for this one because I don't think
    there will be a behaviour change for existing usages.
    
    I know we have one upcoming DT unaware platform that we may want to use
    some of these properties via ACPI tables so I won't object if this ends
    up on the stable track but I don't think it meets the criteria for
    stable.

 drivers/hwmon/adt7475.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c
index 6a6ebcc896b1..3b9289bc5997 100644
--- a/drivers/hwmon/adt7475.c
+++ b/drivers/hwmon/adt7475.c
@@ -1468,7 +1468,7 @@ static int load_config3(const struct i2c_client *client, const char *propname)
 	u8 config3;
 	int ret;
 
-	ret = of_property_read_string(client->dev.of_node, propname, &function);
+	ret = device_property_read_string(&client->dev, propname, &function);
 	if (!ret) {
 		ret = adt7475_read(REG_CONFIG3);
 		if (ret < 0)
@@ -1494,7 +1494,7 @@ static int load_config4(const struct i2c_client *client, const char *propname)
 	u8 config4;
 	int ret;
 
-	ret = of_property_read_string(client->dev.of_node, propname, &function);
+	ret = device_property_read_string(&client->dev, propname, &function);
 	if (!ret) {
 		ret = adt7475_read(REG_CONFIG4);
 		if (ret < 0)
@@ -1556,8 +1556,8 @@ static int set_property_bit(const struct i2c_client *client, char *property,
 			    u8 *config, u8 bit_index)
 {
 	u32 prop_value = 0;
-	int ret = of_property_read_u32(client->dev.of_node, property,
-					&prop_value);
+	int ret = device_property_read_u32(&client->dev, property,
+					   &prop_value);
 
 	if (!ret) {
 		if (prop_value)
-- 
2.40.0

Re: [PATCH v2 1/2] hwmon: (adt7475) Use device_property APIs when configuring polarity

[Guenter Roeck]

On Wed, Apr 19, 2023 at 11:36:55AM +1200, Chris Packham wrote:
> On DT unaware platforms of_property_read_u32_array() returns -ENOSYS
> which wasn't handled by the code treating adi,pwm-active-state as
> optional. Update the code to use device_property_read_u32_array() which
> deals gracefully with DT unaware platforms.
> 
> Fixes: 86da28eed4fb ("hwmon: (adt7475) Add support for inverting pwm output")
> Reported-by: Mariusz Białończyk <manio@skyboo.net>
> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
> ---
> 
> Notes:
>     I've not currently got access to a DT unaware platform with an ADT7475
>     chip so I'm not 100% sure that this will fix the problem Mariusz
>     reported but looking at drivers I think this approach is correct.
>     

What happens if there is no such property anywhere, neither in
devicetree nor in acpi ?

Guenter

>     Changes in v2:
>     - use device_property_read_u32_array instead of checking for -ENOSYS
> 
>  drivers/hwmon/adt7475.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c
> index 6e4c92b500b8..6a6ebcc896b1 100644
> --- a/drivers/hwmon/adt7475.c
> +++ b/drivers/hwmon/adt7475.c
> @@ -1604,9 +1604,9 @@ static int adt7475_set_pwm_polarity(struct i2c_client *client)
>  	int ret, i;
>  	u8 val;
>  
> -	ret = of_property_read_u32_array(client->dev.of_node,
> -					 "adi,pwm-active-state", states,
> -					 ARRAY_SIZE(states));
> +	ret = device_property_read_u32_array(&client->dev,
> +					     "adi,pwm-active-state", states,
> +					     ARRAY_SIZE(states));
>  	if (ret)
>  		return ret;
>  
> -- 
> 2.40.0
> 

Re: [PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs

[kernel test robot]

Hi Chris,

kernel test robot noticed the following build warnings:

[auto build test WARNING on groeck-staging/hwmon-next]
[also build test WARNING on linus/master v6.3-rc7 next-20230418]
[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/Chris-Packham/hwmon-adt7475-Use-device_property-APIs-when-configuring-polarity/20230419-074117
base:   https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
patch link:    https://lore.kernel.org/r/20230418233656.869055-3-chris.packham%40alliedtelesis.co.nz
patch subject: [PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230419/202304192005.lJVSjooB-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 12.1.0
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/59836340c66130951595e2adebf284eca3063ccd
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Chris-Packham/hwmon-adt7475-Use-device_property-APIs-when-configuring-polarity/20230419-074117
        git checkout 59836340c66130951595e2adebf284eca3063ccd
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304192005.lJVSjooB-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/hwmon/adt7475.c: In function 'load_config3':
>> drivers/hwmon/adt7475.c:1471:43: warning: passing argument 1 of 'device_property_read_string' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
    1471 |         ret = device_property_read_string(&client->dev, propname, &function);
         |                                           ^~~~~~~~~~~~
   In file included from include/linux/of.h:22,
                    from include/linux/of_device.h:9,
                    from drivers/hwmon/adt7475.c:13:
   include/linux/property.h:54:48: note: expected 'struct device *' but argument is of type 'const struct device *'
      54 | int device_property_read_string(struct device *dev, const char *propname,
         |                                 ~~~~~~~~~~~~~~~^~~
   drivers/hwmon/adt7475.c: In function 'load_config4':
   drivers/hwmon/adt7475.c:1497:43: warning: passing argument 1 of 'device_property_read_string' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
    1497 |         ret = device_property_read_string(&client->dev, propname, &function);
         |                                           ^~~~~~~~~~~~
   include/linux/property.h:54:48: note: expected 'struct device *' but argument is of type 'const struct device *'
      54 | int device_property_read_string(struct device *dev, const char *propname,
         |                                 ~~~~~~~~~~~~~~~^~~
   drivers/hwmon/adt7475.c: In function 'set_property_bit':
>> drivers/hwmon/adt7475.c:1559:44: warning: passing argument 1 of 'device_property_read_u32' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
    1559 |         int ret = device_property_read_u32(&client->dev, property,
         |                                            ^~~~~~~~~~~~
   include/linux/property.h:164:59: note: expected 'struct device *' but argument is of type 'const struct device *'
     164 | static inline int device_property_read_u32(struct device *dev,
         |                                            ~~~~~~~~~~~~~~~^~~


vim +1471 drivers/hwmon/adt7475.c

  1464	
  1465	static int load_config3(const struct i2c_client *client, const char *propname)
  1466	{
  1467		const char *function;
  1468		u8 config3;
  1469		int ret;
  1470	
> 1471		ret = device_property_read_string(&client->dev, propname, &function);
  1472		if (!ret) {
  1473			ret = adt7475_read(REG_CONFIG3);
  1474			if (ret < 0)
  1475				return ret;
  1476	
  1477			config3 = ret & ~CONFIG3_SMBALERT;
  1478			if (!strcmp("pwm2", function))
  1479				;
  1480			else if (!strcmp("smbalert#", function))
  1481				config3 |= CONFIG3_SMBALERT;
  1482			else
  1483				return -EINVAL;
  1484	
  1485			return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3);
  1486		}
  1487	
  1488		return 0;
  1489	}
  1490	
  1491	static int load_config4(const struct i2c_client *client, const char *propname)
  1492	{
  1493		const char *function;
  1494		u8 config4;
  1495		int ret;
  1496	
  1497		ret = device_property_read_string(&client->dev, propname, &function);
  1498		if (!ret) {
  1499			ret = adt7475_read(REG_CONFIG4);
  1500			if (ret < 0)
  1501				return ret;
  1502	
  1503			config4 = ret & ~CONFIG4_PINFUNC;
  1504	
  1505			if (!strcmp("tach4", function))
  1506				;
  1507			else if (!strcmp("therm#", function))
  1508				config4 |= CONFIG4_THERM;
  1509			else if (!strcmp("smbalert#", function))
  1510				config4 |= CONFIG4_SMBALERT;
  1511			else if (!strcmp("gpio", function))
  1512				config4 |= CONFIG4_PINFUNC;
  1513			else
  1514				return -EINVAL;
  1515	
  1516			return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4);
  1517		}
  1518	
  1519		return 0;
  1520	}
  1521	
  1522	static int load_config(const struct i2c_client *client, enum chips chip)
  1523	{
  1524		int err;
  1525		const char *prop1, *prop2;
  1526	
  1527		switch (chip) {
  1528		case adt7473:
  1529		case adt7475:
  1530			prop1 = "adi,pin5-function";
  1531			prop2 = "adi,pin9-function";
  1532			break;
  1533		case adt7476:
  1534		case adt7490:
  1535			prop1 = "adi,pin10-function";
  1536			prop2 = "adi,pin14-function";
  1537			break;
  1538		}
  1539	
  1540		err = load_config3(client, prop1);
  1541		if (err) {
  1542			dev_err(&client->dev, "failed to configure %s\n", prop1);
  1543			return err;
  1544		}
  1545	
  1546		err = load_config4(client, prop2);
  1547		if (err) {
  1548			dev_err(&client->dev, "failed to configure %s\n", prop2);
  1549			return err;
  1550		}
  1551	
  1552		return 0;
  1553	}
  1554	
  1555	static int set_property_bit(const struct i2c_client *client, char *property,
  1556				    u8 *config, u8 bit_index)
  1557	{
  1558		u32 prop_value = 0;
> 1559		int ret = device_property_read_u32(&client->dev, property,
  1560						   &prop_value);
  1561	
  1562		if (!ret) {
  1563			if (prop_value)
  1564				*config |= (1 << bit_index);
  1565			else
  1566				*config &= ~(1 << bit_index);
  1567		}
  1568	
  1569		return ret;
  1570	}
  1571	

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

Re: [PATCH v2 1/2] hwmon: (adt7475) Use device_property APIs when configuring polarity

[Guenter Roeck]

On Wed, Apr 19, 2023 at 11:36:55AM +1200, Chris Packham wrote:
> On DT unaware platforms of_property_read_u32_array() returns -ENOSYS
> which wasn't handled by the code treating adi,pwm-active-state as
> optional. Update the code to use device_property_read_u32_array() which
> deals gracefully with DT unaware platforms.
> 
> Fixes: 86da28eed4fb ("hwmon: (adt7475) Add support for inverting pwm output")
> Reported-by: Mariusz Białończyk <manio@skyboo.net>
> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>

Applied.

Thanks,
Guenter

> ---
> 
> Notes:
>     I've not currently got access to a DT unaware platform with an ADT7475
>     chip so I'm not 100% sure that this will fix the problem Mariusz
>     reported but looking at drivers I think this approach is correct.
>     
>     Changes in v2:
>     - use device_property_read_u32_array instead of checking for -ENOSYS
> 
>  drivers/hwmon/adt7475.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c
> index 6e4c92b500b8..6a6ebcc896b1 100644
> --- a/drivers/hwmon/adt7475.c
> +++ b/drivers/hwmon/adt7475.c
> @@ -1604,9 +1604,9 @@ static int adt7475_set_pwm_polarity(struct i2c_client *client)
>  	int ret, i;
>  	u8 val;
>  
> -	ret = of_property_read_u32_array(client->dev.of_node,
> -					 "adi,pwm-active-state", states,
> -					 ARRAY_SIZE(states));
> +	ret = device_property_read_u32_array(&client->dev,
> +					     "adi,pwm-active-state", states,
> +					     ARRAY_SIZE(states));
>  	if (ret)
>  		return ret;
>  

Re: [PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs

[Guenter Roeck]

On Wed, Apr 19, 2023 at 11:36:56AM +1200, Chris Packham wrote:
> Instead of of_property_read_*() use the equivalent
> device_property_read_*() API. This will allow these properties to be
> used on DT unaware platforms. For DT aware platforms this will be a
> noop.
> 
> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
> ---
> 
> Notes:
>     This is an additional update for master from the preceeding bugfix
>     commit. I've not added a fixes tag for this one because I don't think
>     there will be a behaviour change for existing usages.
>     
>     I know we have one upcoming DT unaware platform that we may want to use
>     some of these properties via ACPI tables so I won't object if this ends
>     up on the stable track but I don't think it meets the criteria for
>     stable.
> 
>  drivers/hwmon/adt7475.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c
> index 6a6ebcc896b1..3b9289bc5997 100644
> --- a/drivers/hwmon/adt7475.c
> +++ b/drivers/hwmon/adt7475.c
> @@ -1468,7 +1468,7 @@ static int load_config3(const struct i2c_client *client, const char *propname)
>  	u8 config3;
>  	int ret;
>  
> -	ret = of_property_read_string(client->dev.of_node, propname, &function);
> +	ret = device_property_read_string(&client->dev, propname, &function);

Unfortunately that is a problem because the parameter passed to
load_config3 is a pointer to a const data structure and
device_property_read_string doesn't like that (afaics for
no good reason). You'll also have to change the client parameter
to load_config() and friends to not be const.

Guenter

Re: [PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs

[Chris Packham]

On 20/04/23 04:06, Guenter Roeck wrote:
> On Wed, Apr 19, 2023 at 11:36:56AM +1200, Chris Packham wrote:
>> Instead of of_property_read_*() use the equivalent
>> device_property_read_*() API. This will allow these properties to be
>> used on DT unaware platforms. For DT aware platforms this will be a
>> noop.
>>
>> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
>> ---
>>
>> Notes:
>>      This is an additional update for master from the preceeding bugfix
>>      commit. I've not added a fixes tag for this one because I don't think
>>      there will be a behaviour change for existing usages.
>>      
>>      I know we have one upcoming DT unaware platform that we may want to use
>>      some of these properties via ACPI tables so I won't object if this ends
>>      up on the stable track but I don't think it meets the criteria for
>>      stable.
>>
>>   drivers/hwmon/adt7475.c | 8 ++++----
>>   1 file changed, 4 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c
>> index 6a6ebcc896b1..3b9289bc5997 100644
>> --- a/drivers/hwmon/adt7475.c
>> +++ b/drivers/hwmon/adt7475.c
>> @@ -1468,7 +1468,7 @@ static int load_config3(const struct i2c_client *client, const char *propname)
>>   	u8 config3;
>>   	int ret;
>>   
>> -	ret = of_property_read_string(client->dev.of_node, propname, &function);
>> +	ret = device_property_read_string(&client->dev, propname, &function);
> Unfortunately that is a problem because the parameter passed to
> load_config3 is a pointer to a const data structure and
> device_property_read_string doesn't like that (afaics for
> no good reason). You'll also have to change the client parameter
> to load_config() and friends to not be const.

Not sure how I didn't notice that. Probably rushing to get the fix part out.

I do have a v3 that drops the const where needed to silence the warnings 
but I'll sit on that for now in the hope that your patch gets accepted.

> Guenter

Re: [PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs

[Guenter Roeck]

On 4/19/23 13:49, Chris Packham wrote:
> 
> On 20/04/23 04:06, Guenter Roeck wrote:
>> On Wed, Apr 19, 2023 at 11:36:56AM +1200, Chris Packham wrote:
>>> Instead of of_property_read_*() use the equivalent
>>> device_property_read_*() API. This will allow these properties to be
>>> used on DT unaware platforms. For DT aware platforms this will be a
>>> noop.
>>>
>>> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
>>> ---
>>>
>>> Notes:
>>>       This is an additional update for master from the preceeding bugfix
>>>       commit. I've not added a fixes tag for this one because I don't think
>>>       there will be a behaviour change for existing usages.
>>>       
>>>       I know we have one upcoming DT unaware platform that we may want to use
>>>       some of these properties via ACPI tables so I won't object if this ends
>>>       up on the stable track but I don't think it meets the criteria for
>>>       stable.
>>>
>>>    drivers/hwmon/adt7475.c | 8 ++++----
>>>    1 file changed, 4 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c
>>> index 6a6ebcc896b1..3b9289bc5997 100644
>>> --- a/drivers/hwmon/adt7475.c
>>> +++ b/drivers/hwmon/adt7475.c
>>> @@ -1468,7 +1468,7 @@ static int load_config3(const struct i2c_client *client, const char *propname)
>>>    	u8 config3;
>>>    	int ret;
>>>    
>>> -	ret = of_property_read_string(client->dev.of_node, propname, &function);
>>> +	ret = device_property_read_string(&client->dev, propname, &function);
>> Unfortunately that is a problem because the parameter passed to
>> load_config3 is a pointer to a const data structure and
>> device_property_read_string doesn't like that (afaics for
>> no good reason). You'll also have to change the client parameter
>> to load_config() and friends to not be const.
> 
> Not sure how I didn't notice that. Probably rushing to get the fix part out.
> 
> I do have a v3 that drops the const where needed to silence the warnings
> but I'll sit on that for now in the hope that your patch gets accepted.
> 

Sounds good to me. There is no hurry with this one, after all.

Thanks,
Guenter

Re: [PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs

[kernel test robot]

Hi Chris,

kernel test robot noticed the following build errors:

[auto build test ERROR on groeck-staging/hwmon-next]
[also build test ERROR on linus/master v6.3-rc7]
[cannot apply to next-20230420]
[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/Chris-Packham/hwmon-adt7475-Use-device_property-APIs-when-configuring-polarity/20230419-074117
base:   https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
patch link:    https://lore.kernel.org/r/20230418233656.869055-3-chris.packham%40alliedtelesis.co.nz
patch subject: [PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs
config: i386-randconfig-a013 (https://download.01.org/0day-ci/archive/20230421/202304211232.U03a7306-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/59836340c66130951595e2adebf284eca3063ccd
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Chris-Packham/hwmon-adt7475-Use-device_property-APIs-when-configuring-polarity/20230419-074117
        git checkout 59836340c66130951595e2adebf284eca3063ccd
        # 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/hwmon/ drivers/net/ethernet/intel/ice/ kernel/rcu/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304211232.U03a7306-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/hwmon/adt7475.c:1471:36: error: passing 'const struct device *' to parameter of type 'struct device *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           ret = device_property_read_string(&client->dev, propname, &function);
                                             ^~~~~~~~~~~~
   include/linux/property.h:54:48: note: passing argument to parameter 'dev' here
   int device_property_read_string(struct device *dev, const char *propname,
                                                  ^
   drivers/hwmon/adt7475.c:1497:36: error: passing 'const struct device *' to parameter of type 'struct device *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           ret = device_property_read_string(&client->dev, propname, &function);
                                             ^~~~~~~~~~~~
   include/linux/property.h:54:48: note: passing argument to parameter 'dev' here
   int device_property_read_string(struct device *dev, const char *propname,
                                                  ^
   drivers/hwmon/adt7475.c:1559:37: error: passing 'const struct device *' to parameter of type 'struct device *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           int ret = device_property_read_u32(&client->dev, property,
                                              ^~~~~~~~~~~~
   include/linux/property.h:164:59: note: passing argument to parameter 'dev' here
   static inline int device_property_read_u32(struct device *dev,
                                                             ^
   3 errors generated.


vim +1471 drivers/hwmon/adt7475.c

  1464	
  1465	static int load_config3(const struct i2c_client *client, const char *propname)
  1466	{
  1467		const char *function;
  1468		u8 config3;
  1469		int ret;
  1470	
> 1471		ret = device_property_read_string(&client->dev, propname, &function);
  1472		if (!ret) {
  1473			ret = adt7475_read(REG_CONFIG3);
  1474			if (ret < 0)
  1475				return ret;
  1476	
  1477			config3 = ret & ~CONFIG3_SMBALERT;
  1478			if (!strcmp("pwm2", function))
  1479				;
  1480			else if (!strcmp("smbalert#", function))
  1481				config3 |= CONFIG3_SMBALERT;
  1482			else
  1483				return -EINVAL;
  1484	
  1485			return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3);
  1486		}
  1487	
  1488		return 0;
  1489	}
  1490	

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

Re: [PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs

[kernel test robot]

Hi Chris,

kernel test robot noticed the following build warnings:

[auto build test WARNING on groeck-staging/hwmon-next]
[also build test WARNING on linus/master v6.3-rc7]
[cannot apply to next-20230420]
[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/Chris-Packham/hwmon-adt7475-Use-device_property-APIs-when-configuring-polarity/20230419-074117
base:   https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
patch link:    https://lore.kernel.org/r/20230418233656.869055-3-chris.packham%40alliedtelesis.co.nz
patch subject: [PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs
config: i386-randconfig-s002-20230417 (https://download.01.org/0day-ci/archive/20230421/202304211315.wHZGWO8S-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/intel-lab-lkp/linux/commit/59836340c66130951595e2adebf284eca3063ccd
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Chris-Packham/hwmon-adt7475-Use-device_property-APIs-when-configuring-polarity/20230419-074117
        git checkout 59836340c66130951595e2adebf284eca3063ccd
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 olddefconfig
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/hwmon/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304211315.wHZGWO8S-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/hwmon/adt7475.c:1471:44: sparse: sparse: incorrect type in argument 1 (different modifiers) @@     expected struct device *dev @@     got struct device const * @@
   drivers/hwmon/adt7475.c:1471:44: sparse:     expected struct device *dev
   drivers/hwmon/adt7475.c:1471:44: sparse:     got struct device const *
   drivers/hwmon/adt7475.c:1497:44: sparse: sparse: incorrect type in argument 1 (different modifiers) @@     expected struct device *dev @@     got struct device const * @@
   drivers/hwmon/adt7475.c:1497:44: sparse:     expected struct device *dev
   drivers/hwmon/adt7475.c:1497:44: sparse:     got struct device const *
   drivers/hwmon/adt7475.c:1559:45: sparse: sparse: incorrect type in argument 1 (different modifiers) @@     expected struct device *dev @@     got struct device const * @@
   drivers/hwmon/adt7475.c:1559:45: sparse:     expected struct device *dev
   drivers/hwmon/adt7475.c:1559:45: sparse:     got struct device const *

vim +1471 drivers/hwmon/adt7475.c

  1464	
  1465	static int load_config3(const struct i2c_client *client, const char *propname)
  1466	{
  1467		const char *function;
  1468		u8 config3;
  1469		int ret;
  1470	
> 1471		ret = device_property_read_string(&client->dev, propname, &function);
  1472		if (!ret) {
  1473			ret = adt7475_read(REG_CONFIG3);
  1474			if (ret < 0)
  1475				return ret;
  1476	
  1477			config3 = ret & ~CONFIG3_SMBALERT;
  1478			if (!strcmp("pwm2", function))
  1479				;
  1480			else if (!strcmp("smbalert#", function))
  1481				config3 |= CONFIG3_SMBALERT;
  1482			else
  1483				return -EINVAL;
  1484	
  1485			return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3);
  1486		}
  1487	
  1488		return 0;
  1489	}
  1490	

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

Re: [PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs

[Guenter Roeck]

On Wed, Apr 19, 2023 at 11:36:56AM +1200, Chris Packham wrote:
> Instead of of_property_read_*() use the equivalent
> device_property_read_*() API. This will allow these properties to be
> used on DT unaware platforms. For DT aware platforms this will be a
> noop.
> 
> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>

Applied to hwmon-next.

Thanks,
Guenter

> ---
> 
> Notes:
>     This is an additional update for master from the preceeding bugfix
>     commit. I've not added a fixes tag for this one because I don't think
>     there will be a behaviour change for existing usages.
>     
>     I know we have one upcoming DT unaware platform that we may want to use
>     some of these properties via ACPI tables so I won't object if this ends
>     up on the stable track but I don't think it meets the criteria for
>     stable.
> 
>  drivers/hwmon/adt7475.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c
> index 6a6ebcc896b1..3b9289bc5997 100644
> --- a/drivers/hwmon/adt7475.c
> +++ b/drivers/hwmon/adt7475.c
> @@ -1468,7 +1468,7 @@ static int load_config3(const struct i2c_client *client, const char *propname)
>  	u8 config3;
>  	int ret;
>  
> -	ret = of_property_read_string(client->dev.of_node, propname, &function);
> +	ret = device_property_read_string(&client->dev, propname, &function);
>  	if (!ret) {
>  		ret = adt7475_read(REG_CONFIG3);
>  		if (ret < 0)
> @@ -1494,7 +1494,7 @@ static int load_config4(const struct i2c_client *client, const char *propname)
>  	u8 config4;
>  	int ret;
>  
> -	ret = of_property_read_string(client->dev.of_node, propname, &function);
> +	ret = device_property_read_string(&client->dev, propname, &function);
>  	if (!ret) {
>  		ret = adt7475_read(REG_CONFIG4);
>  		if (ret < 0)
> @@ -1556,8 +1556,8 @@ static int set_property_bit(const struct i2c_client *client, char *property,
>  			    u8 *config, u8 bit_index)
>  {
>  	u32 prop_value = 0;
> -	int ret = of_property_read_u32(client->dev.of_node, property,
> -					&prop_value);
> +	int ret = device_property_read_u32(&client->dev, property,
> +					   &prop_value);
>  
>  	if (!ret) {
>  		if (prop_value)