[PATCH 01/11] hwmon: (pmbus/bel-pfe) Remove use of i2c_match_id()

Andrew Davis posted 11 patches 1 month ago
There is a newer version of this series
[PATCH 01/11] hwmon: (pmbus/bel-pfe) Remove use of i2c_match_id()
Posted by Andrew Davis 1 month ago
The function i2c_match_id() is used to fetch the matching ID from
the i2c_device_id table. This is often used to then retrieve the
matching driver_data. This can be done in one step with the helper
i2c_get_match_data().

This helper has a couple other benefits:
 * It doesn't need the i2c_device_id passed in so we do not need
   to have that forward declared, allowing us to remove those or
   move the i2c_device_id table down to its more natural spot
   with the other module info.
 * It also checks for device match data, which allows for OF and
   ACPI based probing. That means we do not have to manually check
   those first and can remove those checks.

Signed-off-by: Andrew Davis <afd@ti.com>
---
 drivers/hwmon/pmbus/bel-pfe.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/hwmon/pmbus/bel-pfe.c b/drivers/hwmon/pmbus/bel-pfe.c
index ddf9d9a2958c4..6499556f735b4 100644
--- a/drivers/hwmon/pmbus/bel-pfe.c
+++ b/drivers/hwmon/pmbus/bel-pfe.c
@@ -88,13 +88,10 @@ static struct pmbus_driver_info pfe_driver_info[] = {
 	},
 };
 
-static const struct i2c_device_id pfe_device_id[];
-
 static int pfe_pmbus_probe(struct i2c_client *client)
 {
-	int model;
+	int model = (uintptr_t)i2c_get_match_data(client);
 
-	model = (int)i2c_match_id(pfe_device_id, client)->driver_data;
 	client->dev.platform_data = &pfe_plat_data;
 
 	/*
-- 
2.39.2
Re: [PATCH 01/11] hwmon: (pmbus/bel-pfe) Remove use of i2c_match_id()
Posted by Guenter Roeck 1 month ago
On Thu, Mar 05, 2026 at 01:56:32PM -0600, Andrew Davis wrote:
> The function i2c_match_id() is used to fetch the matching ID from
> the i2c_device_id table. This is often used to then retrieve the
> matching driver_data. This can be done in one step with the helper
> i2c_get_match_data().
> 
> This helper has a couple other benefits:
>  * It doesn't need the i2c_device_id passed in so we do not need
>    to have that forward declared, allowing us to remove those or
>    move the i2c_device_id table down to its more natural spot
>    with the other module info.
>  * It also checks for device match data, which allows for OF and
>    ACPI based probing. That means we do not have to manually check
>    those first and can remove those checks.

The above seem to be boilerplates, not matching the actual patches.

AI review says:

  This isn't a bug, but this description is inaccurate for this specific driver.
  Looking at the code before this commit, there were no manual checks for OF or
  ACPI match data (like of_match_device or acpi_match_device) in
  pfe_pmbus_probe(). The driver only ever relied on i2c_match_id().
  Could the commit message be updated to avoid claiming it removes manual
  OF/ACPI checks from this specific driver?

Similar feedback applies to most of the patches in this series. Please resend
the series and drop inaccurate information from the commit descriptions.

Thanks,
Guenter

> 
> Signed-off-by: Andrew Davis <afd@ti.com>
> ---
>  drivers/hwmon/pmbus/bel-pfe.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/hwmon/pmbus/bel-pfe.c b/drivers/hwmon/pmbus/bel-pfe.c
> index ddf9d9a2958c4..6499556f735b4 100644
> --- a/drivers/hwmon/pmbus/bel-pfe.c
> +++ b/drivers/hwmon/pmbus/bel-pfe.c
> @@ -88,13 +88,10 @@ static struct pmbus_driver_info pfe_driver_info[] = {
>  	},
>  };
>  
> -static const struct i2c_device_id pfe_device_id[];
> -
>  static int pfe_pmbus_probe(struct i2c_client *client)
>  {
> -	int model;
> +	int model = (uintptr_t)i2c_get_match_data(client);
>  
> -	model = (int)i2c_match_id(pfe_device_id, client)->driver_data;
>  	client->dev.platform_data = &pfe_plat_data;
>  
>  	/*
> -- 
> 2.39.2
>
Re: [PATCH 01/11] hwmon: (pmbus/bel-pfe) Remove use of i2c_match_id()
Posted by Andrew Davis 1 month ago
On 3/6/26 10:16 AM, Guenter Roeck wrote:
> On Thu, Mar 05, 2026 at 01:56:32PM -0600, Andrew Davis wrote:
>> The function i2c_match_id() is used to fetch the matching ID from
>> the i2c_device_id table. This is often used to then retrieve the
>> matching driver_data. This can be done in one step with the helper
>> i2c_get_match_data().
>>
>> This helper has a couple other benefits:
>>   * It doesn't need the i2c_device_id passed in so we do not need
>>     to have that forward declared, allowing us to remove those or
>>     move the i2c_device_id table down to its more natural spot
>>     with the other module info.
>>   * It also checks for device match data, which allows for OF and
>>     ACPI based probing. That means we do not have to manually check
>>     those first and can remove those checks.
> 
> The above seem to be boilerplates, not matching the actual patches.
> 
> AI review says:
> 
>    This isn't a bug, but this description is inaccurate for this specific driver.
>    Looking at the code before this commit, there were no manual checks for OF or
>    ACPI match data (like of_match_device or acpi_match_device) in
>    pfe_pmbus_probe(). The driver only ever relied on i2c_match_id().
>    Could the commit message be updated to avoid claiming it removes manual
>    OF/ACPI checks from this specific driver?
> 
> Similar feedback applies to most of the patches in this series. Please resend
> the series and drop inaccurate information from the commit descriptions.
> 

Yes, this one superset commit message was used for all the patches.
I'll go though and manually trim out the parts that are not relevant
for each given patch.

Thanks,
Andrew

> Thanks,
> Guenter
> 
>>
>> Signed-off-by: Andrew Davis <afd@ti.com>
>> ---
>>   drivers/hwmon/pmbus/bel-pfe.c | 5 +----
>>   1 file changed, 1 insertion(+), 4 deletions(-)
>>
>> diff --git a/drivers/hwmon/pmbus/bel-pfe.c b/drivers/hwmon/pmbus/bel-pfe.c
>> index ddf9d9a2958c4..6499556f735b4 100644
>> --- a/drivers/hwmon/pmbus/bel-pfe.c
>> +++ b/drivers/hwmon/pmbus/bel-pfe.c
>> @@ -88,13 +88,10 @@ static struct pmbus_driver_info pfe_driver_info[] = {
>>   	},
>>   };
>>   
>> -static const struct i2c_device_id pfe_device_id[];
>> -
>>   static int pfe_pmbus_probe(struct i2c_client *client)
>>   {
>> -	int model;
>> +	int model = (uintptr_t)i2c_get_match_data(client);
>>   
>> -	model = (int)i2c_match_id(pfe_device_id, client)->driver_data;
>>   	client->dev.platform_data = &pfe_plat_data;
>>   
>>   	/*
>> -- 
>> 2.39.2
>>