Hi Mark,
On Wed Feb 12, 2025 at 3:41 PM -05, Mark Pearson wrote:
> Hi Kurt
>
> On Wed, Feb 12, 2025, at 2:03 PM, Kurt Borja wrote:
>> Drivers usually call this method on error/exit paths and do not check
>> for it's return value, which is always 0 anyway, so make it void. This
>> is safe to do as currently all drivers use
>> devm_platform_profile_register().
>>
> I was worried I had mucked that up with the revert done in thinkpad_acpi? But it's not checking the return there so I think it's fine
Don't worry. I was aware of that :)
>
>> While at it improve the style and make the function safer by checking
>> for IS_ERR_OR_NULL before dereferencing the device pointer.
>>
>> Signed-off-by: Kurt Borja <kuurtb@xxxxxxxxx>
>> ---
>> Hi all,
>>
>> I made a little modification that I forgot in the last version.
>>
>> Rafael, please tell me if you prefer different commits for this. Also
>> should we WARN_ON(IS_ERR_OR_NULL)?
>>
>> Based on the acpi branch of the linux-pm tree.
>>
>> ~ Kurt
>>
>> Changes in v2:
>> - Get reference to pprof after checking for IS_ERR_OR_NULL(dev)
>> - CC Mark Pearson (sorry!)
>>
>> drivers/acpi/platform_profile.c | 19 +++++++++----------
>> include/linux/platform_profile.h | 2 +-
>> 2 files changed, 10 insertions(+), 11 deletions(-)
>>
>> diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
>> index fc92e43d0fe9..ed9c0cc9ea9c 100644
>> --- a/drivers/acpi/platform_profile.c
>> +++ b/drivers/acpi/platform_profile.c
>> @@ -569,24 +569,23 @@ EXPORT_SYMBOL_GPL(platform_profile_register);
>> /**
>> * platform_profile_remove - Unregisters a platform profile class device
>> * @dev: Class device
>> - *
>> - * Return: 0
>> */
>> -int platform_profile_remove(struct device *dev)
>> +void platform_profile_remove(struct device *dev)
>> {
>> - struct platform_profile_handler *pprof = to_pprof_handler(dev);
>> - int id;
>> + struct platform_profile_handler *pprof;
>> +
>> + if (IS_ERR_OR_NULL(dev))
>> + return;
>> +
>> + pprof = to_pprof_handler(dev);
>> +
>> guard(mutex)(&profile_lock);
>>
>> - id = pprof->minor;
>> + ida_free(&platform_profile_ida, pprof->minor);
>> device_unregister(&pprof->dev);
>> - ida_free(&platform_profile_ida, id);
>>
>> sysfs_notify(acpi_kobj, NULL, "platform_profile");
>> -
>> sysfs_update_group(acpi_kobj, &platform_profile_group);
>> -
>> - return 0;
>> }
>> EXPORT_SYMBOL_GPL(platform_profile_remove);
>>
>> diff --git a/include/linux/platform_profile.h
>> b/include/linux/platform_profile.h
>> index 8ab5b0e8eb2c..d5499eca9e1d 100644
>> --- a/include/linux/platform_profile.h
>> +++ b/include/linux/platform_profile.h
>> @@ -47,7 +47,7 @@ struct platform_profile_ops {
>> struct device *platform_profile_register(struct device *dev, const
>> char *name,
>> void *drvdata,
>> const struct platform_profile_ops *ops);
>> -int platform_profile_remove(struct device *dev);
>> +void platform_profile_remove(struct device *dev);
>> struct device *devm_platform_profile_register(struct device *dev,
>> const char *name,
>> void *drvdata,
>> const struct platform_profile_ops *ops);
>>
>> base-commit: 3e3e377dd1f300bbdd230533686ce9c9f4f8a90d
>> --
>> 2.48.1
> Looks good to me
> Reviewed-by: Mark Pearson <mpearson-lenovo@xxxxxxxxx>
Thank you very much!
--
~ Kurt
>
> Mark
